help me outt guyss

so im getting my g35 in 2 weeks.. and i am going twin turbo.. most likely the speed force racing kit.. so im wondering which exhaust should i get.. would a 3 inch perform better than a 2.5 inch? and im probably not going twin turbo right away, i will get my exhaust first, would a 3 inch exhaust fit on a stock g35? thanks guys..

 

the 2.5" is good for up to 500whp. If you plan on upgrading the internals and going past 500whp in the future I would recommend the 3" although while you are n/a you are gonna lose from low end tq from the 3". with n/a you want to back pressure and with FI you want as little back pressure as possible. the 2.5" with FI will also give you a little more tq, but the 3" will give you quicker spool.

 

3 inch

 

so is it better to get 2.5 if you are not going for F1?
is HKS, GREDDY, and INJEN all 2.5?

 

thanks guys.. so if i got a 3inch exhaust right away, it would fit? i am prolly going with a 2.5in, i dont plan on upgrading my internals and wont go past 500whp.

 

Stick with the 2 1/2" and go with a true-dual system
like HKS or Stillen they'll handle the HP......LOL

 

I don't know what 3" are out there or will fit but I will tell you that the bigger exhaust is always better with turbos. Always!
Don't let anyone tell you otherwise. In a turbo application the turbo is the restriction in the exhaust. You want as little restriction as possible after the turbo. You will NOT lose anything with turbos and big exhaust.

 

hks and stillen are not 2.5...they are like 2.2 or 2.3

 

+1.

 

I couln't agree more. We have experimented endlessly with the 300ZX and let me tell you for an FI application 3" is the way to go.

 

I have HKS exhaust and I love it.
I'm planning on going FI with 550whp+, my friend told me that there is no need to go with 3" because it's huge for V6 engine. His friend from Z1MotorSport has 1200whp 300ZX with 2.5" exhaust, he said that when he switched to 3" he gained HP but loss TQ, and visa versa.
So, can I go with 2.5" up to 550whp+?

 

If you're getting the SFR turbo kit, just get Tim at SFR to make you whatever exhaust you want as well......

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