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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

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  #1  
Old 07-31-2013, 04:24 PM
Scal2016 Scal2016 is offline
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Talking 2003 325ci Cold-Air Intake Question/Performance Chip

What're the best cold-air intakes to install on my 2003 325ci bmw? Looking for something not too crazy in price but nothing crummy.

Also, any thoughts people have on the shark injector or the Dinan chip?


Thanks,
BP
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  #2  
Old 07-31-2013, 04:28 PM
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MalibuMafiaV MalibuMafiaV is offline
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Your stock intake is the best intake system you can get for your car if you don't have a supercharger or turbo. And same goes for the injectors and "chip". Our cars gain absolutely no power without forced induction. You can gain slight power from a full exhaust system and headers removing your catalytic converts. But that's about it.
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Last edited by MalibuMafiaV; 07-31-2013 at 04:31 PM.
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  #3  
Old 07-31-2013, 04:29 PM
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jvr826 jvr826 is offline
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I like the Nacho Chip and dryer vent pipe mod.
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  #4  
Old 07-31-2013, 04:30 PM
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MalibuMafiaV MalibuMafiaV is offline
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Quote:
Originally Posted by jvr826 View Post
I like the Nacho Chip and dryer vent pipe mod.
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Audi S4 2000 Stage 3 - Dat turbo spool
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Maserati 2004 M128 GT - HREs/tint/straight piped SOLD
BMW 2006 M3 - stock - SOLD
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  #5  
Old 07-31-2013, 04:32 PM
Scal2016 Scal2016 is offline
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Awesome thanks. Any recommended performance mods or is it just not worth it with the cost of everything? Seems it'd almost be better to just upgrade to the M series instead of spending a ton.
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  #6  
Old 07-31-2013, 04:38 PM
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MalibuMafiaV MalibuMafiaV is offline
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Quote:
Originally Posted by Scal2016 View Post
Awesome thanks. Any recommended performance mods or is it just not worth it with the cost of everything? Seems it'd almost be better to just upgrade to the M series instead of spending a ton.
That's the wisest thing a new poster has ever said. If your looking for extra power to either come close or past a M3 your not going to get it without spending at least 5-8k on your current car. So yes you are probably better off getting an M3. The M3 will cost a lot more in insurance though. Thus the reason I just made my sedan faster than an M3 and still have awesomely cheap insurance.
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Audi S4 2000 Stage 3 - Dat turbo spool
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Maserati 2004 M128 GT - HREs/tint/straight piped SOLD
BMW 2006 M3 - stock - SOLD
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  #7  
Old 07-31-2013, 06:52 PM
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? Seems it'd almost be better to just upgrade to the M series instead of spending a ton.
NOW you`re using your head for something besides a hat rack !
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  #8  
Old 08-02-2013, 03:57 PM
rawbspear rawbspear is offline
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afe or k&n cold air intake

so what i am getting here is that you guys do not recommend adding one of these for 210-250$

both companies claim that you will get a performance/ added MPG with install. You guys seem to be saying otherwise.

has anyone here ever made this cheap mod to a 325 and not seen a difference? i dont own an m car and don't desire one(completely) i love my 325xit though and want it to run at its absolute best.

than you for all your future input guys!!
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  #9  
Old 08-02-2013, 04:05 PM
rawbspear rawbspear is offline
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read through the other "cold air intake posts" after posting here. Fer sure going to keep my stock one.
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  #10  
Old 08-02-2013, 04:48 PM
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Autowerke and some other after market mod companies claim 12hp and about the same in torque with their re-mapping of the ECU. cost - $500+/-

Know a guy who bought the BMW performance intake for his ZHP. His quote... "looks cool but did nothing".

This guy has spent a ton on his car with Turner Motor sport suspension , CF hood, CF diffuser, Brembo brake kit etc. but at 13k miles, he hasn't replaced his cooling system yet despite numerous warning from me. I think he even has the original belts

Don't be like him!!

EDIT - performance mods - our cars really benefit from suspension mods i.e. after market anti-sway bars, sport springs and better shocks. I have the Hotchkis sways and the handling improvement is not subtle over the stock sport suspension.
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2004 325i - Sport package - 5MT- clears - CDV mod - M3 gauge faces w/silver gauge rings & red needles - SS exhaust tips - strut tower brace - Hotchkis anti-sway bars -50% tint - shadow grills - roof spoiler - silver CF trim

Last edited by djstrachan; 08-02-2013 at 04:51 PM.
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  #11  
Old 08-02-2013, 05:00 PM
rawbspear rawbspear is offline
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cooling sys

i think my cooling system was replaced already. my bmw mechanic friend says it has an aftermarket fan installed. my car was a bmw factory car for 2 years and seems to have a few other changes to it like the coils as well.
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  #12  
Old 08-03-2013, 07:39 AM
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whinojosa whinojosa is offline
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2003 325ci Cold-Air Intake Question/Performance Chip



I don't know guys... This dude's review of a CAI is pretty compelling

Honestly though... Most people who get one do so mostly for the sound. I had one on my e36 and it did sound nice.


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  #13  
Old 08-03-2013, 06:54 PM
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Re: 2003 325ci Cold-Air Intake Question/Performance Chip

Quote:
Originally Posted by jvr826 View Post
I like the Nacho Chip and dryer vent pipe mod.
Just shat myself

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  #14  
Old 08-03-2013, 07:01 PM
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Re: 2003 325ci Cold-Air Intake Question/Performance Chip

Quote:
Originally Posted by Scal2016 View Post
Awesome thanks. Any recommended performance mods or is it just not worth it with the cost of everything? Seems it'd almost be better to just upgrade to the M series instead of spending a ton.
Sell e46
Buy e30
Buy ford 5.0 and T5
Buy aluminum heads and a cam for 5.0
Buy 5.0 swap kit
Put in some elbow grease
Pocket 2-3K or put it towards suspension and brakes
Go and scare your balls back up...

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  #15  
Old 08-03-2013, 07:11 PM
GoForthFast GoForthFast is offline
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OP, rather than blast your way directly to an M3, test drive a 330 manual compared to your car.
Huge difference and more power than I realistically need. Please don't think of this car as a drag racer.
There are many drawbacks to an M3.
330 is the sweet spot on e46's.
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  #16  
Old 08-03-2013, 07:11 PM
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djstrachan djstrachan is offline
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Quote:
Originally Posted by jvr826 View Post
I like the Nacho Chip and dryer vent pipe mod.
Is that your latest 6 hour $100 effort?
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I'm not a pessimist. At some point the world sh!ts on everybody. Pretending it ain't sh!t makes you an idiot, not an optimist.

2004 325i - Sport package - 5MT- clears - CDV mod - M3 gauge faces w/silver gauge rings & red needles - SS exhaust tips - strut tower brace - Hotchkis anti-sway bars -50% tint - shadow grills - roof spoiler - silver CF trim
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  #17  
Old 08-03-2013, 10:06 PM
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JayKayo JayKayo is offline
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I've dropped in a K&N filter into the stock airbox before, and it messed with the MAF.
Got a BMW Performance intake and felt a super slight increase in power at the higher end RPM's.....or maybe, that was just my mind playing games.
It does sound a lot nicer than stock though. & I never got it with the intention of raising my HP by 999.
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  #18  
Old 08-04-2013, 10:07 PM
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cjwheeling cjwheeling is offline
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How about a 330? 45 more HP without going to an M and just as reliable as a 325 and roughly the same MPG.
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  #19  
Old 08-04-2013, 10:13 PM
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Originally Posted by cjwheeling View Post
How about a 330? 45 more HP without going to an M and just as reliable as a 325 and roughly the same MPG.
OK.....how ?
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  #20  
Old 08-05-2013, 02:39 AM
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cjwheeling cjwheeling is offline
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Sell 325 and buy 330...
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  #21  
Old 08-05-2013, 12:39 PM
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Originally Posted by cjwheeling View Post
Sell 325 and buy 330...
Gotcha

(I missed that implication first time around )
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  #22  
Old 08-05-2013, 12:49 PM
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funny thing is, I've owned pretty much every variant of the e46 except a wagon at one time or another.

I finally decided to get another one; must be a vert, and preferably a 330 vert. Almost picked up a 325 vert that was super clean and priced well, but I drove it home for the weekend from the dealership and couldn't pull the trigger.

The extra 40+ hp makes too much difference to me. 325's are great all around cars; but with no penalty for MPG (1 or 2 MPG) and priced very close, I had to go with my gut and get a 330.

If I already had a 325 and just wanted more hp and nothing else, I'd probably go SC
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  #23  
Old 01-17-2014, 12:06 PM
matt102266 matt102266 is offline
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Hey I've had my 2003 325ci for a while now and I want to start having fun with it. I want to add a tremendous amount of power to the car. Everyone says just to buy the m3 or the 330 but I like the 325 to much. What all can I do to the engine internals to add power. I just got a injen cold air intake. But I want way more. I'm looking into a guide performance chip as well. And ive also thought about a supercharger or a turbo and what brand is recommended for bmw. Any input?


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  #24  
Old 01-17-2014, 12:09 PM
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Let the laughter begin....
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  #25  
Old 01-17-2014, 12:26 PM
lgr122 lgr122 is offline
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Let the laughter begin....


I want more also.
Would someone just give me couple buckets of power, please?

Last edited by lgr122; 01-17-2014 at 12:28 PM.
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