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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 Tue, May-27-2008, 01:46:32 AM   #11
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Im surprised this thread doesn't get much attention and interest after all the great effort that was put into the testing. I would definitely like to see more feedback on the findings. Guess most folks are more interested in rim sizes and exhaust sounds.

From my end, as per my post above, I'm really interested to know if the Borla V2 makes a difference or not. According to DeLellis from BPS, the v2 was created to improve the fitment and the low-end torque issues.
Ref:
http://www.bimmerfest.com/forums/sho...d.php?t=130411 and
http://www.bimmerperformancestore.co...bmw-e46-m3.htm

The low end loss of hp/torque in the excel sheet above using the full catback system from Borla is a deal breaker for me.

Last edited by Mr.G3; Tue, May-27-2008 at 02:00:56 AM.
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Old Tue, May-27-2008, 04:13:13 AM   #12
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Quote:
Originally Posted by G3_M3_FY04 View Post
Im surprised this thread doesn't get much attention and interest after all the great effort that was put into the testing. I would definitely like to see more feedback on the findings. Guess most folks are more interested in rim sizes and exhaust sounds.

From my end, as per my post above, I'm really interested to know if the Borla V2 makes a difference or not. According to DeLellis from BPS, the v2 was created to improve the fitment and the low-end torque issues.
Ref:
http://www.bimmerfest.com/forums/sho...d.php?t=130411 and
http://www.bimmerperformancestore.co...bmw-e46-m3.htm

The low end loss of hp/torque in the excel sheet above using the full catback system from Borla is a deal breaker for me.
I don't know about that -- I've purposefully held off getting the Borla V2 midpipe because I'm content with the sound of the Borla mufflers and don't care to spend the money with relatively little change in sound and no gain in power. Mine rasps VERY little, less than it did stock and less than when it was first installed even. (break-in?)
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Old Tue, May-27-2008, 08:50:39 AM   #13
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Those are some amazing gains. This is something that I would love to do. CA is so damn restrictive.
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Old Tue, May-27-2008, 02:12:12 PM   #14
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The OP mentions that the cross-over should not be incorperated to far forward but doesn't mention the ideal location.

Where are the measurements of the ideal location?
Is the stock cross-over NOT in the ideal placement?

I am asking b/c when I did my exhaust (csl headers, race cats.......) I was informed that the cross-over is an important piece of the puzzle. As it seems that IT IS, looking over the data. It would be nice to know the exact location b/c I have that slight hesistation in the low end.
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Old Tue, May-27-2008, 02:12:27 PM   #15
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Quote:
Originally Posted by G3_M3_FY04 View Post
Im surprised this thread doesn't get much attention and interest after all the great effort that was put into the testing. .
37whp after how many dollars spent???
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Old Tue, May-27-2008, 02:38:24 PM   #16
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Quote:
Originally Posted by Pauly View Post
The OP mentions that the cross-over should not be incorperated to far forward but doesn't mention the ideal location.

Where are the measurements of the ideal location?
Is the stock cross-over NOT in the ideal placement?

I am asking b/c when I did my exhaust (csl headers, race cats.......) I was informed that the cross-over is an important piece of the puzzle. As it seems that IT IS, looking over the data. It would be nice to know the exact location b/c I have that slight hesistation in the low end.

I'm wondering the same thing. I've always read that cross-over location is important and that not it's not the same exact location for every car. Also, the word midpipe is used and that usually refers to section 1. Was the X put in section 1? If so, how would someone run cats and not put the X too far foward?

Also as I mentioned already, I have RacingDynamic's x-pipe section 2... a true x-pipe that has the same x-over as the Burn's piece in the picture. I was thinking (before this thread) of putting it back on in place of the SS x-pipe that's one now which is really a 2-into-1 type pipe. A little more details on this would be great.
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Old Tue, May-27-2008, 02:44:43 PM   #17
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We would all like more info on the midpipes and how/where the x-over section is located....but damn nice numbers!!!
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Old Tue, May-27-2008, 03:04:31 PM   #18
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I would have been interested to see your mods w/o software to see what the software actually does for the car.
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Old Tue, May-27-2008, 03:36:01 PM   #19
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Good data!

I've been waiting for this thread since last fall

What this really comes down to is we need specific on the crossover location... or at least a pipe that comes with it in the ideal location
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Old Tue, May-27-2008, 04:08:27 PM   #20
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Quote:
Originally Posted by G3_M3_FY04 View Post
Im surprised this thread doesn't get much attention and interest after all the great effort that was put into the testing. I would definitely like to see more feedback on the findings. Guess most folks are more interested in rim sizes and exhaust sounds.

From my end, as per my post above, I'm really interested to know if the Borla V2 makes a difference or not. According to DeLellis from BPS, the v2 was created to improve the fitment and the low-end torque issues.
Ref:
http://www.bimmerfest.com/forums/sho...d.php?t=130411 and
http://www.bimmerperformancestore.co...bmw-e46-m3.htm

The low end loss of hp/torque in the excel sheet above using the full catback system from Borla is a deal breaker for me.
This info/test should have been performaned back in 2005 or 06 @ the latest. The sad part about is it those who would have benefited from this information the most have either sold their M3's or went with a more expensive route to gain HP. I know I could have benefitted from this information but with the cycle the E46 is within now, the new M3 owners do not really care about this type of technical info.
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Discussing D/A + CSL Header and Multi Exhaust System Test (Dyno Results 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)