Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 04-14-2013, 11:51 PM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Headers Installed!!

2 weeks ago, i bought a set of headers off ebay from top-speed seller. got them shipped to Lebanon which arrived last Thursday and immediately left both my car and headers at my mechanic's (Joe) for installation.

around a month ago, i told my mechanic that i'll be receiving SS replica headers from the US, and he was as thrilled as i am to get them fit. once i drove my car into his garage, stepped out of the car holding the all shiny stainless steel headers, a big grin appeared on his face, similar to the one i got once i saw them he's my age and is a BMW specialist, so he knows exactly what's gonna happen once they get in

Friday night he called me to pick up the car. once i arrived, saw her parked outside waiting for me, couldn't wait to take her for a spin as soon as Joe saw me, he told me come come i want u to hear something. he stepped inside the car, gave it a little 3K RPM, i was like that thing sounds amaaaazing
she's raspy, but not annoying, which makes it perfect
when cruising, the sound is almost the same as stock, with just a little rasp, but once you step your foot on the gas, all hell breaks loose

Saturday night, off to our favorite drag spot with the gang (search for Sports Cars Lebanon on Facebook, that's us ) while sitting around, chitchatting and having a blast, i saw a guy i know who owns an Auto G35 with test pipes (catless), told him i just installed aftermarket headers and want to see how she drives, he said sure why not.
his friend got aboard with him (told him it wouldn't be accurate with a passenger while i'm alone, he said it's OK (assuming he's gonna blow away anyways )
i was like as u wish

rolling 25mph, and off we go. got a small edge at first, hitting second and kikhkh, didn't hit a perfect shift, it was so torquy that i missed the shift, he got 3 cars length ahead. as soon as i got that 2nd in (damn Getrag ), it was on. i started to close the gap pretty fast. hit 4th and i got passed him by 2 cars length. i was like dafuuuuqq, i was closing in so fast it looked like he was standing still

told him to let his friend step out to make it more fair. and off we go.
rolling 25mph, got a small edge at first as the first time, hit 2nd and this time went in smoothly cuz i shifted slowly, and it was over from there, finished the drag at end of 3rd with 2+ cars between us

i got back to our parking spot, saw the looks on all the guys that were standing (since we started the drag near them) they were all like

no one believed i only had headers on, due to the new sound of my car, everyone thought i had an S54B32 swap everyone kept telling me it sounds exactly like an E46 M3, and no way in hell a stock BMW 330i with only aftermarket headers and take off the way my car does i was like thanks for the compliment but no, my baby is a stock ZHP with only aftermarket headers. even my good friend who owns an E46 M3 didn't believe how my car ran

long story short the power gained was a looot of torque on the lower end, she gets up pretty fast on lower RPM and goes fast all the way til red line, i can feel the extra hp kicking in over 3.5K RPM. IMO, it's a great mod for the price.

Cost is as follows:
- headers: 250$ (top speed seller)
- shipment to Lebanon: 100$ (u guys get it for free)
- installation: 90$
- heat shield installed where the headers are installed on the engine: 20$
- Total of: 460$

Do I believe it's worth it? hell yea! for that budget and the gains i felt, I believe it's a great mod for a 330, since there aren't anything else you can do to it being a perfect car

Here are my current upgrades:
- LED Angel Eyes
- Ebay Headers
- Front License Plate Delete
- Xenon Fog Lights

Pending upgrades are:
- Front Bumper Splitters
- Free flow single pipe 3'' exhaust (titanium or stainless steel, not sure which yet)
- Software remap from Viezu

- Front License Plate Delete (installed)
- Xenon Fog Lights (installed)

Potential Upgrades:
- LSD
- Koni's

EDIT: i didn't get the SES light for running catless headers, not sure why since every post i read on the web for people running them are experiencing it.
the oxygen sensors are a perfect fit inside the new headers, probably some guys have a leak or something?
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime

Last edited by heztheone; 05-09-2013 at 11:53 PM.
Reply With Quote
Advertisement
  #2  
Old 04-15-2013, 01:00 AM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
Woohoo welcome to the world or rasp and great smells! Glad your enjoying it! Vids or it didn't happen as always lol

Sent from my PantechP9060 using Bimmer App
__________________
[SIGPIC]s[/SIGPIC]Formula SAE "Speed is Sexy"
Reply With Quote
  #3  
Old 04-15-2013, 01:16 AM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Quote:
Originally Posted by TannerT View Post
Woohoo welcome to the world or rasp and great smells! Glad your enjoying it! Vids or it didn't happen as always lol

Sent from my PantechP9060 using Bimmer App
the sound is simply amazing
i'll take a vid showing how they look under the hood and how it sounds, but the drag races weren't recorded
original post updated also for catless results
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime
Reply With Quote
  #4  
Old 04-15-2013, 06:31 AM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,034
Mein Auto: E30 with an S52
Glad you like them!

A G35 coupe with an automatic transmission is about as heavy as they get, so I'm not too surprised there. I walked a 350Z convertible once. It was an automatic and the guy had his girlfriend (wife?) in the car. It had some kind of exhaust on it and what appeared to be heavy 19" wheels. But hey... the feeling of knowing you just kicked a car's ass which has 60+ more horsepower and a good bit more torque is a unique one.

Keep it safe out there.

And TannerT... what happened to your thread?
Reply With Quote
  #5  
Old 04-15-2013, 06:47 AM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Quote:
Originally Posted by SPDSKTR View Post
Glad you like them!

A G35 coupe with an automatic transmission is about as heavy as they get, so I'm not too surprised there. I walked a 350Z convertible once. It was an automatic and the guy had his girlfriend (wife?) in the car. It had some kind of exhaust on it and what appeared to be heavy 19" wheels. But hey... the feeling of knowing you just kicked a car's ass which has 60+ more horsepower and a good bit more torque is a unique one.

Keep it safe out there.
great feeling, like i bought a new car

Quote:
Originally Posted by SPDSKTR View Post
And TannerT... what happened to your thread?
it got reported
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime
Reply With Quote
  #6  
Old 04-15-2013, 10:08 AM
Variocam Variocam is offline
Officially Welcomed to the 'Fest
Location: Austin, TX
 
Join Date: Jan 2007
Posts: 659
Mein Auto: 2007 328i, 2004 325i
Glad to hear you had such a great experience with your headers. I had always thought that things like headers, intake, chips, etc., are only worth a hp or two at best on these cars, but your experience says differently. The stock manifold must be very restrictive.

Now that you have improved flow (and I presume cylinder scavenging) as a result of the lower back pressure from your headers, are you planning to add any other mods, like a freer flowing intake? Or are you inclined to leave well enough alone, as sometimes adding mods to these engines can actually become counter-productive, it seems.

Also, TannerT mentions something about smells. Why would headers smell, unless the flanges don't mate correctly, resulting in exhaust leaks?
Reply With Quote
  #7  
Old 04-15-2013, 10:13 AM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
Its due to being catless, there is no scrubbing of the exhaust so it smells like a racecar would. Everytime I am backing into a spot in a parking garage its very noticeable and I frequently get questioned about it lol.

Sent from my PantechP9060 using Bimmer App
__________________
[SIGPIC]s[/SIGPIC]Formula SAE "Speed is Sexy"
Reply With Quote
  #8  
Old 04-15-2013, 12:32 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 35,163
Mein Auto: 2004 330Ci ZHP 3 pedals
Congrats on a worthwhile mod!

I would think that the headers work well combined with the ZHP`s more aggressive cam profiles, enhancing pull toward the top end....your Butt-Dyno results would indicate maybe a 15-to-20 RWHP (or so) increase....nice
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Disabled American Veterans*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #9  
Old 04-15-2013, 12:35 PM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
Bobs do you have headers? I can't remember

Sent from my PantechP9060 using Bimmer App
__________________
[SIGPIC]s[/SIGPIC]Formula SAE "Speed is Sexy"
Reply With Quote
  #10  
Old 04-15-2013, 01:41 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 35,163
Mein Auto: 2004 330Ci ZHP 3 pedals
Quote:
Originally Posted by TannerT View Post
Bobs do you have headers? I can't remember

Sent from my PantechP9060 using Bimmer App
Not on my current car....had some nice Stahl headers on my old 530i....
Attached Thumbnails
Click image for larger version

Name:	Stahl BMW headers.jpg
Views:	106
Size:	101.0 KB
ID:	371570  
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Disabled American Veterans*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #11  
Old 04-15-2013, 02:01 PM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,034
Mein Auto: E30 with an S52
Quote:
Originally Posted by Variocam View Post
Glad to hear you had such a great experience with your headers. I had always thought that things like headers, intake, chips, etc., are only worth a hp or two at best on these cars, but your experience says differently. The stock manifold must be very restrictive.
Think about having a straw stuffed full of foam which is kinked right in the middle. You won't be able to drink with it very well, right? Well... those are the factory headers. Foam-stuffed straws with hard kinks in them.

Okay... now, let's straighten that straw out and remove all the foam. Imagine how much easier drinking your drink with the straw will be!

And that's why aftermarket headers blow the factory ones right out of the water. One could always put a catalytic converter in-line with the exhaust to get rid of some of that smell (it would filter out the carbon monoxide and other weird unfiltered emissions).
Reply With Quote
  #12  
Old 04-15-2013, 02:12 PM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
Bob those are sexy. +1 on the header analogy, everyone says it is hard to get more out of a BMW because they are designed so well. This is mostly true but things like headers (which I believe is an underrated mod on the m54) can really make a difference. If I didn't plan to go FI it would be interesting to see the gains of a completley built intake with a custom manifold and different maf along with appropriate cams and tune. It would be expensive and not yeild the gains of FI but would be fun.

Sent from my PantechP9060 using Bimmer App
__________________
[SIGPIC]s[/SIGPIC]Formula SAE "Speed is Sexy"
Reply With Quote
  #13  
Old 04-15-2013, 02:28 PM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,034
Mein Auto: E30 with an S52
Quote:
Originally Posted by TannerT View Post
Bob those are sexy. +1 on the header analogy, everyone says it is hard to get more out of a BMW because they are designed so well. This is mostly true but things like headers (which I believe is an underrated mod on the m54) can really make a difference. If I didn't plan to go FI it would be interesting to see the gains of a completley built intake with a custom manifold and different maf along with appropriate cams and tune. It would be expensive and not yeild the gains of FI but would be fun.

Sent from my PantechP9060 using Bimmer App
Solid lifter conversion, aggressive cams, 9,000 RPM redline...
Reply With Quote
  #14  
Old 04-15-2013, 03:01 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 35,163
Mein Auto: 2004 330Ci ZHP 3 pedals
Quote:
Originally Posted by SPDSKTR View Post
Solid lifter conversion, aggressive cams, 9,000 RPM redline...
Our current "semi-solid" design are (IMHO) capable of going to 7500 without floating the valves....I would LOVE to see software that made that possible....
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Disabled American Veterans*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #15  
Old 04-15-2013, 03:01 PM
Variocam Variocam is offline
Officially Welcomed to the 'Fest
Location: Austin, TX
 
Join Date: Jan 2007
Posts: 659
Mein Auto: 2007 328i, 2004 325i
So this really isn't a street legal mod. Hmmm... kind of puts a damper on it.
Reply With Quote
  #16  
Old 04-15-2013, 03:03 PM
TrippinBimmer's Avatar
TrippinBimmer TrippinBimmer is offline
Officially Welcomed to the 'Fest
Location: Ridgeland, MS
 
Join Date: Oct 2006
Posts: 666
Send a message via AIM to TrippinBimmer Send a message via Yahoo to TrippinBimmer
Mein Auto: ZHP Custom Stage 3.5
Quote:
Originally Posted by Fast Bob View Post
Our current "semi-solid" design are (IMHO) capable of going to 7500 without floating the valves....I would LOVE to see software that made that possible....
Yeah, but gotta fix the harmonic balance issue that will snap the oil pump shalf in half...
Reply With Quote
  #17  
Old 04-15-2013, 03:07 PM
Fast Bob's Avatar
Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 35,163
Mein Auto: 2004 330Ci ZHP 3 pedals
Quote:
Originally Posted by Variocam View Post
So this really isn't a street legal mod. Hmmm... kind of puts a damper on it.
Well......"Yes", and "No".....as long as you installed race cats and maintained functional 02 sensors, headers would not be in violation of anything.

When you remove the factory cats and don`t replace them, *then* you`re in violation of Federal law, and subject to a $10,000 fine....
__________________
The road goes ever onward....
(R.I.P. Jever)

*Please support the Disabled American Veterans*

When faced with choosing between two evils, always go with the one you`ve never tried before....
Reply With Quote
  #18  
Old 04-15-2013, 03:18 PM
Variocam Variocam is offline
Officially Welcomed to the 'Fest
Location: Austin, TX
 
Join Date: Jan 2007
Posts: 659
Mein Auto: 2007 328i, 2004 325i
Quote:
Originally Posted by Fast Bob View Post
Well......"Yes", and "No".....as long as you installed race cats and maintained functional 02 sensors, headers would not be in violation of anything.

When you remove the factory cats and don`t replace them, *then* you`re in violation of Federal law, and subject to a $10,000 fine....
Race cats? Didn't know there was such a thing (kind of sounds like an oxymoron). How do they differ from stock cats? Do they do as good a job as OEM of scrubbing the exhaust? But you're right, as long as you're not throwing any codes, a car equipped with some sort of aftermarket cats will likely pass inspection. Although I understand this varies quite a bit state to state - in some states, any visible mod (such as headers) will cause you to fail. Not a simple proposition for sure - definitely a "buyer beware" kind of thing.
Reply With Quote
  #19  
Old 04-15-2013, 10:37 PM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Quote:
Originally Posted by Variocam View Post
Glad to hear you had such a great experience with your headers. I had always thought that things like headers, intake, chips, etc., are only worth a hp or two at best on these cars, but your experience says differently. The stock manifold must be very restrictive.

Now that you have improved flow (and I presume cylinder scavenging) as a result of the lower back pressure from your headers, are you planning to add any other mods, like a freer flowing intake? Or are you inclined to leave well enough alone, as sometimes adding mods to these engines can actually become counter-productive, it seems.

Also, TannerT mentions something about smells. Why would headers smell, unless the flanges don't mate correctly, resulting in exhaust leaks?
i listed all upcoming upgrades in my original post

Quote:
Originally Posted by Fast Bob View Post
Congrats on a worthwhile mod!

I would think that the headers work well combined with the ZHP`s more aggressive cam profiles, enhancing pull toward the top end....your Butt-Dyno results would indicate maybe a 15-to-20 RWHP (or so) increase....nice
being able to blow away from a catless G35, i guess the number of the RWHP u provided is pretty exact
waiting on my friend to get his Dyno OBD device so that we could plug it in and where it's at, will post results of course

Quote:
Originally Posted by Fast Bob View Post
Our current "semi-solid" design are (IMHO) capable of going to 7500 without floating the valves....I would LOVE to see software that made that possible....
work in progress, plans to make it reach 7300RPM (currently hitting 7000)

Quote:
Originally Posted by Fast Bob View Post
Well......"Yes", and "No".....as long as you installed race cats and maintained functional 02 sensors, headers would not be in violation of anything.

When you remove the factory cats and don`t replace them, *then* you`re in violation of Federal law, and subject to a $10,000 fine....
actually where i am, u get the following when having a fast car:
- a cop sees and hears u riding ur car fast
- he follows u with sirens
- pulls u over
- asks u what u've done to ur car, and ask u to do some more
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime
Reply With Quote
  #20  
Old 04-16-2013, 12:28 AM
TrippinBimmer's Avatar
TrippinBimmer TrippinBimmer is offline
Officially Welcomed to the 'Fest
Location: Ridgeland, MS
 
Join Date: Oct 2006
Posts: 666
Send a message via AIM to TrippinBimmer Send a message via Yahoo to TrippinBimmer
Mein Auto: ZHP Custom Stage 3.5
U will love the 3" more power under the curve
Reply With Quote
  #21  
Old 04-16-2013, 02:27 AM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Quote:
Originally Posted by TrippinBimmer View Post
U will love the 3" more power under the curve
yea so i've read and heard from many, should be really interesting since not only m i removing the restriction, but also i'll be cutting down almost 25kg of weight from the stock exhaust setup
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime
Reply With Quote
  #22  
Old 04-21-2013, 05:14 AM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
so these are the headers i got from ebay


and these are the stock headers off my car (yak)


here are some pics of them installed




we had a small problem aligning the headers to the exhaust, we had a very small misalignment (that was easily fixed at no cost) as shown below


hoping to shoot a 2nd gear run (for SPDSKTR feedback ) and how it sounds, very bad weather so barely doing any rides

Notes:
- no black smoke
- smells bad as hell
- no SES lights
- sounds like M3
- better mileage
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime
Reply With Quote
  #23  
Old 04-21-2013, 08:51 AM
TannerT TannerT is offline
Officially Welcomed to the 'Fest
Location: Columbia, Missouri
 
Join Date: Mar 2012
Posts: 966
Mein Auto: 03 330ci 3pdl 89 325i
The ses light will come don't worry

Sent from my PantechP9060 using Bimmer App
__________________
[SIGPIC]s[/SIGPIC]Formula SAE "Speed is Sexy"
Reply With Quote
  #24  
Old 04-21-2013, 07:49 PM
SPDSKTR SPDSKTR is offline
I'm a DlCK! So what?
Location: Birmingham, AL, USA
 
Join Date: Sep 2011
Posts: 2,034
Mein Auto: E30 with an S52
Your headers had the same alignment problem mine did.

I hope you enjoy them to their fullest extent and I can't wait to see some videos!

Sent from my Galaxy Nexus using Bimmer App
Reply With Quote
  #25  
Old 04-21-2013, 10:29 PM
heztheone heztheone is offline
Officially Welcomed to the 'Fest
Location: Lebanon (The Country)
 
Join Date: Oct 2009
Posts: 1,480
Mein Auto: 330i ZHP M/T
Quote:
Originally Posted by TannerT View Post
The ses light will come don't worry

Sent from my PantechP9060 using Bimmer App
it's been 2 weeks now and nothing
plus i put her on the scanner to check if anything is not right, she's 100% perfect

Quote:
Originally Posted by SPDSKTR View Post
Your headers had the same alignment problem mine did.

I hope you enjoy them to their fullest extent and I can't wait to see some videos!

Sent from my Galaxy Nexus using Bimmer App
can't wait for the weather to clear out
__________________


Give a man a fish and you feed him for a day. Give a man a Chef and he feeds him for a lifetime

Last edited by heztheone; 04-21-2013 at 10:40 PM.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 06:13 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms