For those considering Spintech exhaust...
9 Second Club
Joined: Nov 2001
Posts: 1,445
Likes: 0
From: Bay Area, CA
Re: For those considering Spintech exhaust...
Bullshit. I gained only 6.2 hp through open headers as compaired to my 4" Mufflex catback with a Spintech Muffler. And I had Mufflex custom made 3" y-pipe WITH carsound cats, and a flowmaster reducer. This was on a m6 2002 t/r 224 cammed bolt on car making 386hp. SPINTECH WORK FINE. Victor
what i would like to know is was a flowmaster dual 3 inch to 4 inch collector the restriction or the muffer, hopefully its the muffler. I got a replacement for that on my rig
http://www.magnaflow.com/02product/universal/round.htm
hehe bottom of the page diesel muffler 4 inch in and out
Resident Grump
Joined: Nov 2001
Posts: 1,050
Likes: 0
From: Walker County Alabama
Re: For those considering Spintech exhaust... A little over a year ago I was competing in an NMCA event in Atlanta with a complete Mufflex 4 inch system (spintech muffler). I did nothing but remove the muffler from the over the axel pipe and the car went from 12.15's @ 112mph to 11.80's @ 118mph and these two runs were within one hour of each other. I never put it back on the car... It went to the junk pile.
Re: For those considering Spintech exhaust... VIctor you are a bonafied knuckle head. Because you already have a restriction by using cats, uncapping your exhaust will not make as great a difference. If you didn't have the restriction from the cats, I bet you would notice larger gains.
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
Re: For those considering Spintech exhaust... This thread was started involving a Spintech single in/ 4" single out. Correct?
I purchased the Spintech 3" In/ Dual 3" Out after specifically asking the tech/sales rep at Spintech, which flowed better; single or dual? He recommended the Dual Outlet muffler.
I would like apple to apple comparos before a manufacturer's name and reputation is slung through the mud. Sure, the Dyno example listed above is convincing when talking single/single, but anyone else have some hard figures when dealing w/ single/dual? Most other cat-back systems are single/dual.
I purchased the Spintech 3" In/ Dual 3" Out after specifically asking the tech/sales rep at Spintech, which flowed better; single or dual? He recommended the Dual Outlet muffler.
I would like apple to apple comparos before a manufacturer's name and reputation is slung through the mud. Sure, the Dyno example listed above is convincing when talking single/single, but anyone else have some hard figures when dealing w/ single/dual? Most other cat-back systems are single/dual.
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Apr 2002
Posts: 716
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From: Dallas-freakin'-Texas
Re: For those considering Spintech exhaust... SouthFL.02.SS- that's right; my system was single 4" in/out. To be fair, I don't know that going to a dual outlet Spintech would make a difference in my situation. I just felt that the power loss through such a large muffler was excessive, and that's why I posted up.
However, I have a friend with a 3000GT VR4 that had a custom Spintech made (single 3.5" in, dual 2.5" out, cross-flow style) and integrated into his hand-built exhaust. He was running consistent 12.0's through the Spintech, and with no other changes at all, he was able to run consistent 11.7's after dropping the muffler right where the exhaust went into it (read: no bends, etc... were eliminated). The quicker times were attained on the same day, at the same track, only ~90 minutes apart. I fully realize that a 3000GT is not an F-body, but a 3/10 drop in ET indicates a fairly significant power gain just by ditching the muffler.
However, I have a friend with a 3000GT VR4 that had a custom Spintech made (single 3.5" in, dual 2.5" out, cross-flow style) and integrated into his hand-built exhaust. He was running consistent 12.0's through the Spintech, and with no other changes at all, he was able to run consistent 11.7's after dropping the muffler right where the exhaust went into it (read: no bends, etc... were eliminated). The quicker times were attained on the same day, at the same track, only ~90 minutes apart. I fully realize that a 3000GT is not an F-body, but a 3/10 drop in ET indicates a fairly significant power gain just by ditching the muffler.
Teching In
Joined: Apr 2010
Posts: 5
Likes: 0
spintech exhaust. I have a 3" y pipe to a 4" that goes to a spintech muffler. From there I have a dual 3" outlet. What I was finding on catback exhaust was they were only offering a 3" y to a 3" collector... Not rocket science people, u still end up with a 3" exhaust system.. as to why I went with the 4" catback exhaust. Much less restricive.
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