i just had my custom exhaust fabbed up Friday. it is a Magnaflow X-pipe going into two Spintech Pro Street muffs and out Borla Intercooled tips thru 2 1/2" tubing. That's mated up to my SLP LTs and 3" race pipes. The sound of the Spintechs is AWESOME... unfortunately it is also too LOUD! It sounds like someone adjusted the bass knob all the way and turned the volume to MAX. You can't make it quiet idling, cruising or accelerating but the WOT is incredible. i got the Pro Streets because they are only 12" long and i thought i'd have a problem getting bigger ones in there. after arguing with the muff shop owner that they would fit we could see that the 13" Spintech Sportsman muffs (which are quieter) would have fit too. i also had to argue about using 2 1/2" tubing and not crimping it like the stock pipes. what we did was run the passenger side pipe straight back past the diff and then wrapping it around it to exit out the stock '04 exit point. it worked beautifully and makes me wonder why they had to crossover and crimp the stock pipes. On the sound i'm going to have to find a way to lower the volume. i've got 2 Dynomax race bullets coming to put on the 3" race pipes where the cats were to see if i can lower the volume without altering the tone or affecting the high flow rate. i'll post up how it went next week when i get back from Vegas :)

what we did was run the passenger side pipe straight back past the diff and then wrapping it around it to exit out the stock '04 exit point. it worked beautifully and makes me wonder why they had to crossover and crimp the stock pipes.

Sometimes engineers (I know firsthand because I am in fact an engineer myself) do not see the forest for the trees. In this case, they skinned the cat in a manner that may not have been optimal.

-K

got the 4" DynoMax bullets installed with 3" inlet/out right behind the collectors in the 3" mid-pipes. WOW! does the system sound awesome! the bullets lowered and smoothed the note a bit but it still has that Spintech snarl at WOT. i'm grinnin'. the boys at the muffler shop were grinnin'. i wish i could find someone with a vid cam so i could post up what they sounded like.

i'm going to have to rename it the custom MagLaSpinMax exhaust now :D

Thats spintech for you, I was running long tubes, a dr.gas 3" xpipe, into dual 3" tubes and dual pro street mufflers on my 6.6L 400 Pontiac...its rediculously bassy. I've been told that my car sounds like someone has the bass turned up in the car really loud aslo.

i've posted this elsewhere but for anybody that hasn't heard it....

This is a launch and flyby

http://media.putfile.com/SpinTech-GTO-LaunchFlyby

This is idle/rev in the driveway

http://media.putfile.com/SpinTech-GTO-idlerev

This is recorded in the car with the windows down

http://media.putfile.com/SpinTech-GTO-in-car

and this is just a longer idle in my driveway with a walk back and forth across the back

http://media.putfile.com/SpinTech-GTO-idle-driveway