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I think the question is more: what was the before/after dyno?
We all know these cars are under rated from factory and a simple tune gains you a lot. This number is GTS territory.
Also in your 2nd posts your car original color is darker. More like a selenite mango grey. I do prefer that color instead of the wrap you did. Nonetheless good job on the wheels. By the way are you working for nutek? That is your 3rd set right? You kept or traded the other 2?
My guess is your offsets are front ET 25 and rear ET 54. And you need a drop man probably with 295 in the back!lol!
My buddy owns NUTEK .I don't know man to drop it it rides good .I'm going to rewrote the car darker I like brushed metal black Matt I saw the color it looks crazy regards
I have seen several dyno runs between high 460's and high 470's WHP stock.
So going from about 475 to 620 is 145 and not to high for a stage 2 tune and downpipes.
thanks for the pic. you did us all a good favor of seeing how this thing works. Now my question is how other exhaust manufacturers claim their exhaust produces more horsepower than the stock setup when it is pretty much straight through anyway?
Also, just having the perforated holes in the chamber quiets it that much? can there be more baffles that you cannot see inside that holed pipe that has the valve control? I wonder if that's what slows down the exhaust flow as well.
Originally Posted by kingmonkey
As you can see it is a chambered exhaust (No Insulation) The left larger pipe (EXHAUST ON) has weep holes that silence using the chamber , these holes once covered up run straight thru the chamber not affecting back pressure.The smaller pipe (EXHAUST OFF) was left alone, It was a simple way to get the sound louder without messing with the entire system there are no resonators on the exhaust system.I like what the shop did,I didn't want it screaming loud,However the stock sound was not enough for my ears
the offset would be realy intressting..got 19x 10 off 50..so 11 would be something like off 75.
also if I calculte the differences of the rolling circumference ..front is +5% and rear + 3,45! so you would got problems with your ESP because the wheels sensors will detect different speeds of the wheel!
I tried 245 35 20 on the front witch is just 3,9% bigger and the rolling circumference was to big !
On my calculations would be perfect... rear 305 25 20 (-1% difference) and 275 25 20 (-1,3) (if 275 will fit on the front!)
Last edited by xxxPaulxxx; 12-26-2016 at 11:36 AM.
01-09-2016, 12:34 AM
