Thanks Patrick G Nice Gain with Flowmaster Merger Y Pipe.
#1
Thanks Patrick G Nice Gain with Flowmaster Merger Y Pipe.
You will probably pick up at least 10 rwhp by running the proper y collector and keeping your cats. Just run the 4" pipe as far back as you can before reducing it to 3". While a 4" cutout is nice, the 3" loudmouth flows pretty well.
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2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE Mods list, Idle Sound Clip, WOT video, 183.092mph video
2007 Jeep Grand Cherokee SRT8 BWoody CAI, 214/218 114LSA cam, ported intake, ARH Headers: 12.12@112.70mph, 150.942mph Texas Mile.
2007 Suburban 5.3L K&N FIPK, EFI Live-tuned for max power and fuel economy.
LS1,LS2,LS3,LS7 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX drivability & dyno tuning by appointment only.
Well I recently bought the Flowmaster Merge collector and had an exhaust shop install it. I took photos of it. It is on my phone dont know how to put it on internet. Anyway what a diffrence. The TSP catted Y has been modified and both pipes from headers are merging perfect(Parrell to each other rather than perpindicular. I probably got 10-12 rwhp just for doin that. Like u said. I feel more torque from 2000-4000 rpms. Before I was at 390 rwhp, now I know I am about 400 rwhp. Cant wait to get the Tony Mamo ported AFR Heads and Ported Fast 92mm. Thanks Pat G.
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2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE Mods list, Idle Sound Clip, WOT video, 183.092mph video
2007 Jeep Grand Cherokee SRT8 BWoody CAI, 214/218 114LSA cam, ported intake, ARH Headers: 12.12@112.70mph, 150.942mph Texas Mile.
2007 Suburban 5.3L K&N FIPK, EFI Live-tuned for max power and fuel economy.
LS1,LS2,LS3,LS7 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX drivability & dyno tuning by appointment only.
Well I recently bought the Flowmaster Merge collector and had an exhaust shop install it. I took photos of it. It is on my phone dont know how to put it on internet. Anyway what a diffrence. The TSP catted Y has been modified and both pipes from headers are merging perfect(Parrell to each other rather than perpindicular. I probably got 10-12 rwhp just for doin that. Like u said. I feel more torque from 2000-4000 rpms. Before I was at 390 rwhp, now I know I am about 400 rwhp. Cant wait to get the Tony Mamo ported AFR Heads and Ported Fast 92mm. Thanks Pat G.
#2
LS1 Tech Administrator
iTrader: (14)
Good report. One 3" pipe slamming together into another single 3" pipe is not an ideal way to construct a y-pipe for making power (or sound). The Flowmaster merge collector into a 4" pipe is a good mod. Does the tone sound any different?
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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.
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.
#7
LS1 Tech Administrator
iTrader: (14)
The idea is to go from this:
To something more like this:
To something more like this:
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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.
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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#8
Launching!
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Patrick G- Where can I get that kind of merge? That ones look like it is stainless vs. the flowmaster which is not. I seen where LG developed that merge but I am unable to find it on there website. Any help?
#9
LS1 Tech Administrator
iTrader: (14)
It's an LG y-merge that Burns Stainless makes exclusively for LG. It's totally badass, but big megabucks. The flowmaster merge comes fairly close in power while costing around $50.
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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.
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.
#17
TECH Fanatic
iTrader: (18)
Thats kinda what I did, except I do not have a cutout yet, but will soon.
I had that same exact ORY in pic 1.... I hated how it sounded... mad rasp and a hammering noise from 2000-2500 RPM. So I bought a flowmaster merge, and had that installed. Now car sounds better, tho still a bit of rasp... The merge I got though was a 3" to 3.5"... not 4" like the OP did. Maybe rasp would be gone if I had went with the bigger merge. Nonetheless it was worth every penny and I would suggest to anyone to go with this merge.
On a side note, where do u get a stainless cutout like that but in 3.5"? Price?
I had that same exact ORY in pic 1.... I hated how it sounded... mad rasp and a hammering noise from 2000-2500 RPM. So I bought a flowmaster merge, and had that installed. Now car sounds better, tho still a bit of rasp... The merge I got though was a 3" to 3.5"... not 4" like the OP did. Maybe rasp would be gone if I had went with the bigger merge. Nonetheless it was worth every penny and I would suggest to anyone to go with this merge.
On a side note, where do u get a stainless cutout like that but in 3.5"? Price?
#18
*offtopic* patrick-your ws6 is bad ***! Thing hauls major *** on that texas mile. If you have any more videos of it on the mile, pm me them please. Whats the displacement of your current engine?