Dyno #'s, Y-pipe to an H-pipe.
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First set-up is a Y-pipe with a Magnaflow cat-back with cats, untuned. 2nd sheet is of the same car with a true dual H-pipe, crush bends with cats, *edit* Kooks LTs *edit* 3"/2.5" over the axel, tuned, uncorrected. Overall difference was 22 rwhp and 16 rwtq.
Last edited by 01bird58; 12-27-2006 at 07:48 PM.
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Let's see...
You add Kooks long tube headers
Tune the motor
Oh yeah, and duals with H-pipe
Gained 22rwhp and 16 tq.
Since most people gain that from LT headers alone, either your tune or your H pipe is not making much of a difference. Congrats on finding new power though.
You add Kooks long tube headers
Tune the motor
Oh yeah, and duals with H-pipe
Gained 22rwhp and 16 tq.
Since most people gain that from LT headers alone, either your tune or your H pipe is not making much of a difference. Congrats on finding new power though.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
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^Well I think 328/344 was a pretty high starting point for a baseline dyno with only a cat-back. Should I have run a worse flowing cat-back at first, so my difference in gain with all these mods could be higher? Considering 360-365rwhp is about how much a complete bolt-on car will make, I guessed, and was right on with 350 with these mods. If anything, we should commend Magnaflow for flowing so well, rather than bashing the 22 rwhp gain.
And I dont think im being "hurt" with any of these mods, considering im making 360 rwtq.
And I dont think im being "hurt" with any of these mods, considering im making 360 rwtq.
Last edited by 01bird58; 12-27-2006 at 07:20 PM.
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No one is bashing the 22 rwhp gain...it's just that the thread title is misleading. It should read: Kooks LT and true duals with H-pipe gains.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
![](https://ls1tech.com/forums/signaturepics/sigpic210_1.gif)
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
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^Oh sorry guys, guess I was being too careless. Change it if you can modererators.
And I think you were kinda bashing the gains.
And I think you were kinda bashing the gains.
Last edited by 01bird58; 12-27-2006 at 07:58 PM.
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noones bashing anything but the title is wrong when you added basically a full exhaust change not just going from catback to duals. Ill be doing my own dyno comparison soon to see if they help me any.