09-06-2024, 01:35 PM | #1 |
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Power increase with mid-pipe and/or downpipe
Wondering what kind of power increase one can expect with a mid-pipe, downpipe, and both. Thinking of AA single mid-pipe and downpipes specifically but I imagine other manufacturers will have similar numbers. Thoughts?
Edit - wondering about increase specifically with stock tune. -Many Thanks Last edited by TrevTrav; 09-06-2024 at 01:46 PM.. |
09-09-2024, 01:18 AM | #2 |
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My baseline numbers full stock was
454whp and 407 tq With IRL mid and valve controller 459whp and 430 tq Most single mids should have similar numbers |
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Newgenbimmer180.00 reallymarkedup695.50 |
09-09-2024, 12:00 PM | #3 | |
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i expect even more HP increase with the downpipes upgrade
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09-09-2024, 04:31 PM | #5 | |
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Unfortunately, you won't see more than 15whp without a tune. The stock computer will likely just lower boost to compensate for the reduced restrictions. They should both have some increased in power. I'd bet the singles out perform the equals but not by a ton until the power levels are increased with a proper tune.
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09-09-2024, 07:07 PM | #6 | |
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Thanks for pointing that out. |
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09-10-2024, 05:17 PM | #7 | |
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The single is equal flow for both turbo banks.
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rons e921942.00 |
09-10-2024, 05:24 PM | #8 | |
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BradMX5477.00 |
09-10-2024, 06:52 PM | #9 | |
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Horsepower lovers will tend to go for the x pipe and single.
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Newgenbimmer180.00 |
09-15-2024, 03:37 AM | #10 |
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09-17-2024, 07:15 PM | #11 |
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Midpipe only ?
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09-27-2024, 12:38 PM | #13 |
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Tune alone on these cars is big power but the bolts certainly help.
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09-27-2024, 03:59 PM | #14 |
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09-27-2024, 04:49 PM | #15 |
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M_Power Rob4576.50 |
09-27-2024, 05:01 PM | #16 |
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Thats MAD POWER
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M_Power Rob4576.50 |
09-27-2024, 08:51 PM | #17 |
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09-28-2024, 08:57 PM | #18 |
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09-30-2024, 01:01 PM | #19 |
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I don't know, I'm running the Evolution Racewerks midpipe and crossover pipe. I don't know if there's any more power but my butt dyno thinks that i'm in boost longer. I'm assuming with less backpressure, the turbos spool easier and i'm able to get more useable mid range torque. These are of course simply speculations. I haven't done a pre and post dyno.
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09-30-2024, 02:00 PM | #20 | |
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10-01-2024, 03:16 AM | #21 |
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https://g87.bimmerpost.com/forums/sh....php?t=2135772
I just posted my dyno numbers with a mid pipe only and BMC filters and basically there were no power gain* (or its within the margin of error for a 465whp car). It just sounds pretty sweet. Downpipes would be the biggest gain by removing the primary cat. I'm sure there are dyno numbers floating around online. * I personally wouldn't consider a 10hp increase over stock (a 2.17% increase) a "real power gain". A really cold day could yield better results.
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10-01-2024, 10:20 AM | #22 | |
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Steve Dinan said 11rwhp is what the OEM DPs cost |
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