What specs with intake and exhuast A/R

 

I believe that is upto you, most of those specs dont change the turbo price much. It all ends up being the same price as long as you dont make a dratic change.

 

Thanks, do you know what most get ...

what is to big for the Vq30de 4th gen motor

 

Its not about the turbo being too big, well yes it is in a sense. Bigger the turbo gets or the AR gets the longer it will take to spool up but your top end will be advantageous.

Most I think stay in the .63ar to .69ar range.

Besides the exact specs, I think people who have the PFI kit need to chime in and answer.

Sorry, I got a t3/t04 H3 trim .63ar stage iii

 

You can choose what A/R you want, but .58 or .69 is good enough... really depends how fast you want the turbo to spool and how much top end you are willing to give up.

"Too big" is relative. For T3/T04E owners, straight T4 is too big... for straight T4 owners, T4/60-1 is too big.


I have a ceramic ball-bearing T4/T04E with P trim turbine wheel and .81 A/R. It can start boost at 2000 and hits peak boost at about 3400 (only noted in 5th gear). A normal T4 with .81 A/R will take longer to reach peak boost.