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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, May-19-2008, 06:16:44 PM   #1
e46s54
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Default Straight Pipes increase HP?

currently, I have a Supersprint Race Muffler, if I change it to Straight PIpes, will I gain Any horses at ALL? not even 1?
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Old Mon, May-19-2008, 06:20:26 PM   #2
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Quote:
Originally Posted by e46s54 View Post
currently, I have a Supersprint Race Muffler, if I change it to Straight PIpes, will I gain Any horses at ALL? not even 1?
I'm pretty sure that I read somewhere on the forum...that using the search function
gains you AT LEAST 10HP

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Old Mon, May-19-2008, 06:21:04 PM   #3
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Originally Posted by e46s54 View Post
currently, I have a Supersprint Race Muffler, if I change it to Straight PIpes, will I gain Any horses at ALL? not even 1?
Maybe a couple. But you will gain a truly staggering amount of noise. Seriously - the noise level produced by an unmuffled S54 is amazing.
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Old Mon, May-19-2008, 06:30:35 PM   #4
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Maybe a couple. But you will gain a truly staggering amount of noise. Seriously - the noise level produced by an unmuffled S54 is amazing.
Basically what Nick said. The ONLY real way to get any extra HP out of the engine
without modifying the engine itself is to go to aftermarket headers with or w/o CATs
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Old Mon, May-19-2008, 07:38:36 PM   #5
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Originally Posted by BAV_M_PWR View Post
Basically what Nick said. The ONLY real way to get any extra HP out of the engine
without modifying the engine itself is to go to aftermarket headers with or w/o CATs
and I would go with the bolded part
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Old Mon, May-19-2008, 07:41:53 PM   #6
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You'll gain more HP... But it will be insanely loud... If you've ever heard a true M3 race car, you'll understand how Uber Banshee loud it really is...


In other words, do it and post vids
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Old Mon, May-19-2008, 08:02:25 PM   #7
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S54's are beast sounding with straight pipe. like a banshee screaming when it comes at you then beastly when it passes you.


DOOO EEETTTT. im doing it on mine when i get it. only thing is youll lose low end torque (unless your turboed) up to about 5k because lack of needed back pressure but past that, she'll show you her true power.

hahah i know everyones seen this vid and ive posted it 2 times since ive been here, but i LOOOVVEE it..

http://www.youtube.com/watch?v=qju9iEFqp3Y

one more of the same car.

http://www.youtube.com/watch?v=quytISKR9VY

btw i see your from atlanta. where at?

Last edited by ///RBtoM3; Mon, May-19-2008 at 08:05:55 PM.
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Old Thu, Oct-22-2009, 04:01:41 AM   #8
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does anyone know if that CSl was using a stock muffler?
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Old Thu, Oct-22-2009, 04:09:21 AM   #9
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That CSL is also supercharged...
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Old Thu, Oct-22-2009, 04:12:35 AM   #10
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how would a straight pipes in section 1 sound with a stock muffler? would it be any louder or just more rasp?
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Last edited by Stellaris; Thu, Oct-22-2009 at 02:15:47 PM.
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Discussing Straight Pipes increase HP? in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)