im fine with that for the street, maybe do some break boosting from a roll lol. reason im going with that turbo is because i will be building 370 at the beginning of the year so i dont want to haft to change downpipes and turbo's blah blah blah.

im sure it will be a beast once it spools up but im still deciding i havint made my decision

 

i like my tc78 so far. just enough lag to have traction on the street but not too much where i hate it. perfect combo. .96 a/r on a 68mm exhaust wheel.

 

Forced Inductions can build you an S475 with a T4 housing, but it costs a bit more. I'd definitely go with that on a 5.3, and then just switch it out when you go bigger.

To the OP, what is the typical track DA where you're at? If you have any kind of altitude, a 10 might be asking a bit much.

 

Yea I knew they made them with a t4 housing. I just assumed he was gonna run a t6

 

2000da.... Sea level is like 70? I already ran 7.30's in a 5.3 with 100 **** making probly 500 to the wheels. During the winter da gets in the negatives

 

Kyles quick spool valve might be the answer.