Built my own 3" exhaust!! - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Bad70supreme · 08-29-2013, 12:20 PM

So I decided to build my own 3" exhaust, I kept it dumped at the rear. I will try an get a clip up later but its sounds awesome and fit perfect! I am set to hit the dyno again next month for a tune update, pretty sure my car is far from optimum right now.

Since my tune I now have full 3" right off the headers, a much bigger filter with a straighter shot to the TB, and I switched to LS7 plugs. Hoping I pick up another 15hp or so and a little more trap speed.
How far you guys think my tune is off right now? As far as the butt dyno I cant tell, its way to hot out right now and my car always dogs bad in this heat! Last time when it was tuned I had the full stock exhaust on and a tiny air filter that he said was choking me!

Switchin2Chevy · 08-29-2013, 12:38 PM

SSCam77 · 08-29-2013, 12:47 PM

Nice job so far, I love the DIY stuff...

2010 SSRS · 08-29-2013, 12:52 PM

great job, I'll be watching for the video

Bad70supreme · 08-29-2013, 12:56 PM

Thanks, I also located the H 18" from the collectors. The stock H was much further down the tube, so hopping this might add some torque as well. I was able to even add ground clearance over the stock setup in the middle of the car!

SNSSTR · 08-29-2013, 01:13 PM

So you're going to do mine when I come over right?

Looks great man! Good work!

Scooter18155 · 08-29-2013, 01:15 PM

May I ask why no x pipe?

vroomapunk · 08-29-2013, 01:19 PM

Quote:

Originally Posted by Bad70supreme

Thanks, I also located the H 18" from the collectors. The stock H was much further down the tube, so hopping this might add some torque as well. I was able to even add ground clearance over the stock setup in the middle of the car!

Not bashing, but I did read a thread where dyno and flow tests were done with an x pipe and an h pipe in a bunch of different locations, and the tester found the stock location was optimum, any other location resulted in a loss of power or no change at all.

Might have been Ted janetty but dont quote me on that. Definitely on this forum though

Bad70supreme · 08-29-2013, 01:25 PM

Quote:

Originally Posted by vroomapunk

Not bashing, but I did read a thread where dyno and flow tests were done with an x pipe and an h pipe in a bunch of different locations, and the tester found the stock location was optimum, any other location resulted in a loss of power or no change at all.

Might have been Ted janetty but dont quote me on that. Definitely on this forum though

I would find a loss of power hard to believe, that would suck thats for sure! Everything I read said to put the H close to the headers as possible. I am about 5" closer then the stock location. I stayed with a H because I like the old school sound over an X.

62nalide · 08-29-2013, 01:38 PM

X-pipe would of been better.
Either way you got skills nice bends man!

Pro Stock John · 08-29-2013, 01:44 PM

Nice, did you mig or tig that?

Bad70supreme · 08-29-2013, 01:45 PM

Who knows maybe next year I will try an X, thanks though its only my 3rd exhaust build! I did my 70 cutlass and a friends G body in 3" also. I think this is my best one so far!

Bad70supreme · 08-29-2013, 01:54 PM

Quote:

Originally Posted by Pro Stock John

Nice, did you mig or tig that?

I use a weld pack 100, flux corded. I could have done a better welding job, took me bit to find the setting that worked for me and I was being impatient LOL

SNSSTR · 08-29-2013, 02:27 PM

Quote:

Originally Posted by vroomapunk

Not bashing, but I did read a thread where dyno and flow tests were done with an x pipe and an h pipe in a bunch of different locations, and the tester found the stock location was optimum, any other location resulted in a loss of power or no change at all.

Might have been Ted janetty but dont quote me on that. Definitely on this forum though

It was Ted Janetty. I can't find the post, but I do remember him being the one to post that.

08-29-2013, 12:20 PM	#1
Bad70supreme Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010 Location: plainfield, IL Posts: 2,706	Built my own 3" exhaust!! So I decided to build my own 3" exhaust, I kept it dumped at the rear. I will try an get a clip up later but its sounds awesome and fit perfect! I am set to hit the dyno again next month for a tune update, pretty sure my car is far from optimum right now. Since my tune I now have full 3" right off the headers, a much bigger filter with a straighter shot to the TB, and I switched to LS7 plugs. Hoping I pick up another 15hp or so and a little more trap speed. How far you guys think my tune is off right now? As far as the butt dyno I cant tell, its way to hot out right now and my car always dogs bad in this heat! Last time when it was tuned I had the full stock exhaust on and a tiny air filter that he said was choking me! Attached Images __________________ 10.91 at 122 H/C stock block N/A

08-29-2013, 12:47 PM	#3
SSCam77 Drives: 427 Join Date: Jan 2010 Location: GTA Posts: 27	Nice job so far, I love the DIY stuff... __________________ check out @LSX_CANADA on Instagram.

08-29-2013, 12:52 PM	#4
2010 SSRS Drives: 3 V8 Camaros Join Date: May 2009 Location: The Ocean State Posts: 111,187 View My Garage	great job, I'll be watching for the video __________________ Jannetty Racing JRE Street Package

08-29-2013, 12:56 PM	#5
Bad70supreme Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010 Location: plainfield, IL Posts: 2,706	Thanks, I also located the H 18" from the collectors. The stock H was much further down the tube, so hopping this might add some torque as well. I was able to even add ground clearance over the stock setup in the middle of the car! __________________ 10.91 at 122 H/C stock block N/A

08-29-2013, 01:13 PM	#6
SNSSTR All About That Speed Drives: 2010 Camaro 2SS/RS Join Date: Mar 2013 Location: Memphis Posts: 1,181	So you're going to do mine when I come over right? Looks great man! Good work! __________________ 2010 SS M6 \| 416 CI \| H/C/I \| GPI TUNED \| SNSSTR

08-29-2013, 12:38 PM	#2
Switchin2Chevy Drives: Currently 2015 Mustang GT manual. Join Date: Jul 2009 Location: Milton, FL Posts: 816

08-29-2013, 01:15 PM	#7
Scooter18155 Drives: 2010 ss/rs 6 speed manual Join Date: Aug 2013 Location: Ny Posts: 584	May I ask why no x pipe? __________________ 2010 camaro ss/rs, standard 6 speed, ls3 motor, bmr subframe connectors, jba 3” competition Exhaust, stainless works 1 7/8" headers, adm cold air intake, hurst short throw shifter, bo white ported tb, mishimoto aluminum radiator, mishimoto oil cooler.

08-29-2013, 01:38 PM	#10
62nalide Drives: 2013 SS Join Date: May 2013 Location: DFW Posts: 4,102	X-pipe would of been better. Either way you got skills nice bends man! __________________ https://frankensteined.net/ Martin@Frankensteined.net

08-29-2013, 01:44 PM	#11
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,216	Nice, did you mig or tig that? __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

08-29-2013, 01:45 PM	#12
Bad70supreme Drives: 2010 aqua blue SS/RS M6 Join Date: Feb 2010 Location: plainfield, IL Posts: 2,706	Who knows maybe next year I will try an X, thanks though its only my 3rd exhaust build! I did my 70 cutlass and a friends G body in 3" also. I think this is my best one so far! __________________ 10.91 at 122 H/C stock block N/A