What I have heard is that to4b is and isnt (depends on who you ask) big enough to produce 500hp and t78 for example is too laggy on the street. What would be the next step to bigger turbo from to4b that REALLY can produce 500hp and isnt too laggy??

 

maybe a t66. or a 62-1 t04e.

however if you're not happy with the 450rwhp a t04b can net you, maybe you should skip the whole intermediate step and go to the big boy (T78). If you're in the right gear lag's not too bad.

jason from rx7store made 506rwhp on pump gas...

really either way if you're shooting for much more than 500rwhp you're going to be running 100+ octane...

 

bhp or rwhp?
T04S, GT35R, T62, etc...

 

Jason made that power on race gas. I'm pretty sure it was 106+ octane or something.

 

My bad. I see that now.

 

NO I was not talking about rwhp. And to4b is WAY TOO SMALL to produde 450RWHP. 400rwhp maybe... so what turbo for 500hp..??

 

Try a Trust/Greddy TD06H-25G i have one, and im aiming for 550 rwhp next year, with a new engine and 1.8-2.0 bar.

 

2 bar? on a tdo6? hopefully you plan on using race gas and water injection. I dont mean to burst your bubble, But even then i HIGHLY doubt your going to make close to that.

 

GT40R