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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 7 Series / 8 Series > 7 Series - E38 (1995 - 2001)

7 Series - E38 (1995 - 2001)

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  #1  
Old 04-29-2012, 08:28 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
Join Date: Apr 2012
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Mein Auto: 2000 740I sport
Smile Get real power out of your E38 exhaust

After doing some research I found that there is an affordable exhaust and I am getting mine done tomorrow. First stop just chopping resonators off your rides to do it right pick up the parts I just bought. 2-1/4 in x exhaust crossover have it welded in place of the center muffler to help keep the torque you loose when you gain flow. buy four sticks of 16 gauge 2-1/4 it comes in four foot sections I might get a way with 3 the IL needs four at 11 bucks each the x cross over is 79 bucks both from summit racing I love those guys. These a similar type exhaust system would be installed on an late model dohc 4.6L mustang . The mufflers should be dual exit magnaflows to keep the noise down as well which you can also purchase from summit. welding and tube building on area around 300 bucks plus the cross over 79 plus about 44 and around 150 for mufflers ebay also is a source. so for around 500-600 bucks you should get at least 20 horsepower as the 4.6 dohc mustangs get that on some at least 25 hp will update you friends later this is way cheaper than Dinan or Remus both over a grand with out install labor. Later on M60 intake dinan TB and a tune from a guy who advertises on here with these mods looking for high 13's and around 340 rwhp and for you guys in West Los Angeles hit me up have a sick Bimmer mechanic locally I trust near Marina Del Rey
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  #2  
Old 04-30-2012, 01:27 PM
setconstr setconstr is offline
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Mein Auto: 2001 740i sport 2006 m6
re:

Make pictures because i'm sure people are interested...........
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  #3  
Old 05-01-2012, 11:20 AM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
will take some today also need to get back on a lift so you can see it from the bottom to get a better look at it.
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  #4  
Old 05-08-2012, 06:38 PM
BigBoii38 BigBoii38 is offline
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Location: San Jose california
 
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Mein Auto: 1998 740il
Interesting.
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  #5  
Old 05-08-2012, 07:33 PM
First740i First740i is offline
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Location: michigan
 
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Mein Auto: 740i
Sick.
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  #6  
Old 05-08-2012, 09:16 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
Hey fellas will have a you tube video of the sound as no other 7 exhaust sounds like this one and the power curve is great more tomorrow
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  #7  
Old 05-10-2012, 02:49 AM
bimmer818 bimmer818 is offline
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Mein Auto: ///M 328ci
can't wait to check it out.. I'm from south cali too.. i might be intreseting
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  #8  
Old 05-12-2012, 10:12 AM
yoketron yoketron is offline
Im just me...
Location: USA
 
Join Date: May 2012
Posts: 16
Mein Auto: 2001 e38
So any updates on this?
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  #9  
Old 05-13-2012, 10:44 AM
US and UK V12s US and UK V12s is offline
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Location: ST Louis, MO
 
Join Date: May 2012
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Mein Auto: 2000 750iL V12
Any more updates??? Photos from underneath and video with exhaust sound would be great!!! I've got a 2000 V-12 and want a better exhaust sound but don't want to screw up the V12 power with the wrong mod.
I have had no luck finding anything made for the V12 - any ideas???
Thanks in advance!
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  #10  
Old 05-13-2012, 11:11 AM
Alpine 7even Alpine 7even is offline
King of E38 Kustom
Location: Issaquah
 
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Posts: 27
Mein Auto: Boosted individual e38
Pictures.....Or it didn't happen.
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Supercharged 2000 E38 individual
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  #11  
Old 06-10-2012, 05:58 PM
vazquezjavi vazquezjavi is offline
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Mein Auto: '01 325i/ '93 318is
Didn't happen!?
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  #12  
Old 06-10-2012, 06:42 PM
Alpine 7even Alpine 7even is offline
King of E38 Kustom
Location: Issaquah
 
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Mein Auto: Boosted individual e38
Guess not
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  #13  
Old 06-11-2012, 08:22 AM
skinchin13 skinchin13 is offline
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Location: Landrum, South Carolina
 
Join Date: Apr 2011
Posts: 61
Mein Auto: 1996 BMW 750il
Hey for the 750il this is what i did. There was some hp gain which was proven by dynometer runs. I has an x-pipe going to flowmaster super 10s, and the pipe size is 2 1/4.
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  #14  
Old 06-23-2012, 05:16 PM
US and UK V12s US and UK V12s is offline
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Location: ST Louis, MO
 
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Mein Auto: 2000 750iL V12
Your exhaust sounds great!!!
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  #15  
Old 09-21-2012, 04:22 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
If you want to see pictures from a lift what the exhaust looks like check out my page http://www.facebook.com/BimmerBoys there is a picture of the exhaust with the car on the lift and anyone in the West Los Angeles area like the page as I have a lot of contacts for parts and service at reasonable prices in my area.
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  #16  
Old 09-21-2012, 04:27 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
Also tip of the day you can use a generic elbow racing intake on 740s the trick is hooking up the oxygen pump as at idle the MAF sensor needs to read the extra 02 from the pump or CEL will light up I got mine on Ebay a place called racing intakes $50 including shipping the plugged whole needs to be unplugged run rubber hose from pump to hole on intake got rubber fittings and hose at of all places PEP BOYS well NO CEL and runs great next will modify stock air box to fit over intake to get cold air in.
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  #17  
Old 09-21-2012, 04:29 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
Join Date: Apr 2012
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Mein Auto: 2000 740I sport
Next check with a guy in Culver City planning to use S62 crank and darton sleeves, CP pistons to get some real HP gonna hurt the wallet but will smile later when it gets built and broken in
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  #18  
Old 09-21-2012, 04:31 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
750 guys since you have almost a liter larger engine use 2 1/2 inch tubing on the this exhaust system build
Quote:
Originally Posted by US and UK V12s View Post
Any more updates??? Photos from underneath and video with exhaust sound would be great!!! I've got a 2000 V-12 and want a better exhaust sound but don't want to screw up the V12 power with the wrong mod.
I have had no luck finding anything made for the V12 - any ideas???
Thanks in advance!
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  #19  
Old 09-21-2012, 04:33 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
Join Date: Apr 2012
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Mein Auto: 2000 740I sport
exhaust

similar system mine uses knock off remus muffler with quad tips sounds real sick will make a you tube to post
Quote:
Originally Posted by skinchin13 View Post
Hey for the 750il this is what i did. There was some hp gain which was proven by dynometer runs. I has an x-pipe going to flowmaster super 10s, and the pipe size is 2 1/4.
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  #20  
Old 10-19-2012, 04:48 PM
dctazz dctazz is offline
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Location: Illinois
 
Join Date: Nov 2011
Posts: 15
Mein Auto: 1995 BMW 740iL M38 M60
What about the O2 sensors? How did you get around that? Or did you just put them in the same locations?
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  #21  
Old 10-19-2012, 05:06 PM
dctazz dctazz is offline
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Location: Illinois
 
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Mein Auto: 1995 BMW 740iL M38 M60
Did you have any other pictures from under the car?

Last edited by dctazz; 10-19-2012 at 05:10 PM.
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  #22  
Old 10-19-2012, 09:10 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
The stock exhaust was cut just before the center muffler and ran back with the x over ran under the diff to the rear mufflers.
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  #23  
Old 10-24-2012, 01:14 AM
BMW 3-SERIES BMW 3-SERIES is offline
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Location: Arizona
 
Join Date: Jun 2007
Posts: 422
Mein Auto: 2000 540i Sport (E39)
Really? Dyno'd 340hp is very hard to believe.
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  #24  
Old 12-06-2012, 02:06 PM
7 series guy 7 series guy is offline
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Location: Los Angeles
 
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Mein Auto: 2000 740I sport
Well fellas here is a sound clip check it out
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  #25  
Old 12-11-2012, 03:53 AM
JasonSC540ia JasonSC540ia is offline
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Location: Alamogetto NM
 
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Mein Auto: 1999 740i
Says video does not exist.
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