like a title said, i want to buy a dual exhaust but i dont know witch is the best size for my g35 twin turbo??

thx

 

Dual 3"

Dual 2.5" will work for lower boost but if you build the motor and go for high boost it will cause a bottle neck.

 

i am interessed by xo2 exhaust its a good choice for 8lbs of boost??

 

I'm on the HKS, and thats the same piping I THINK as the xo2, and its fine for lower boost levels. Any higher though and I think I'd get a bigger exhaust.

 

what is the compagnies who made the xo2 i dont find information about it

 

What's the cuttoff where 2.5 or 2.75 is no longer good to run? Can someone please explain this?

Is there a chart somewhere showing which brand exhausts are safe to use up to certain level WHP? I think this would be awesome. Basically something with 2.5, 2.75 and 3" diameter pipe sizes showing which HP range where they make the most ideal flow/power etc

Maybe we can make one! Exhaust gurus, can you help us out?