Turbo guidance, PLEASE! Im Lost.

[J-Rat]

You have a plethora of turbo choices now if around 400+ is your goal. You can go cheap and try 60-1 or T-61. I made 407 wheel at like 13 pounds on the T-61 and 490 at 25 on the same turbo. As you can see, that turbo was maxed, or probably being over maxed because of the reduction in gains with large increases in boost. 15-18 would be my target boost for that car in the "efficient range" that keeps the snail from putting too much heat into the air. I run a 67mm now, but havent seen any appreciable gains from it which I attribute to my stuffy 2.5 inch catback.

If you want to go spendy you can get pretty much the GT series starting at the GT35 and on up. Now its just a decision of how much peak versus average HP do you want. Also remember that the BB series are water and oil cooled for MUCH BETTER turbo life and some slight spool gains. Plan on well over $1k to play with those turbos.

If 4500 is acceptable for spool level then go GT40 or 42. Then you have the Holset family of turbos if you like, or Turbonetics turbos. Dont get HKS, its just repackaged garrett stuff thats marked up like 2 thousand bucks. Stick to T-4 style and you should be wide open for 400 hp.

Rat