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08-09-2023, 09:11 PM
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#1 |
 Drives: 2023 1SS 6 speed Join Date: Aug 2023
Location: Oregon
Posts: 151
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Any power gains these days with muffler swaps?
Back a number of years ago swapping out the mufflers for a.. Flowmaster or something like that would get you a lot of power. What kinds of gains are expected now for axle backs on LT1s?
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08-09-2023, 09:43 PM
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#2 | |
          
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,766
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15 conversion 1059 WHP/944 WTQ, 9.48@150
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08-09-2023, 09:53 PM
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#3 |
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Drives: 2023 1SS 6 speed Join Date: Aug 2023
Location: Oregon
Posts: 151
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Yeah, the current muffler designs seem to use volume instead of restriction to dampen sound .
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08-10-2023, 06:48 AM
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#4 |
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Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,995
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pretty nil. it's sound and looks is about it.
INtake and exhaust restrictions seem to me to be a thing of the past. YOu'd need mulitple dyno runs to see anything besides placebo/seat of the pants. |
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08-10-2023, 08:17 AM
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#5 |
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Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,684
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Yeah low single digits gain that would likely be offset by aero drag.
I’d do a ati pulley first unless you’re chasing sound
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
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08-10-2023, 08:44 AM
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#6 |
Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019
Location: Erlanger, Kentucky 41018
Posts: 815
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Nothing from a muffler swap. Significant gains from adding headers and tuning.
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08-28-2023, 06:26 PM
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#7 | |
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Drives: 2023 1SS 6 speed Join Date: Aug 2023
Location: Oregon
Posts: 151
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Quote:
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08-29-2023, 04:30 AM
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#8 |
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Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,684
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Yes
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
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08-31-2023, 06:40 PM
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#9 | |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
Location: Connecticut
Posts: 2,343
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Quote:
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09-01-2023, 09:54 AM
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#10 |
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Drives: 6th gen Join Date: Aug 2013
Location: US
Posts: 3,684
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Yes.
Just under 1mph in the 1/4. It makes the engine smooth as butter too tho That’s really priceless.
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22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28 dragpack - 11.68@122
16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold) |
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09-01-2023, 10:08 AM
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#11 |
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Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,695
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There was a member who tested an axle-back on an SS (MBRP Race I think it was) and he reported a gain of 5.09 rwhp. Did mention that it was loud as F*#! though.
He also tested the mentioned ATI underdrive pulley, and reported an 8.64 rwhp gain. |
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09-01-2023, 10:59 AM
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#12 |
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Drives: 2017 Camaro 1SS Join Date: Aug 2016
Location: NH
Posts: 1,695
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Test of axle back was here https://www.camaro6.com/forums/showt...=591098&page=2
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09-04-2023, 02:41 PM
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#13 |
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Drives: '17 Camaro 2SS & '99 Camaro Z28 Join Date: Feb 2014
Location: Austin, TX
Posts: 1,837
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It seems that you have to do the entire exhaust to see any noticeable gains. Headers, Cats, Axle Back, ect. I did this and a E-85 tune along with a CAI and there's was a pretty decent gain. I want to do IM, Heads and Mild Cam next.
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