one eyed willy

what size wastegate will i need for a single t4 60-1 on a gt engine,pushing 15 psi at the most.

Lito

38mm will do, if you have a boost controller, buy it with the amount of psi wanted for low boost and get 15psi thru the controller. If going with Tial on that size, a large blue spring will give you about that boost.

If want to play safe or have more room for the future get a 40mm.

Here is the info on Tial so you could choose your size/springs: http://www.tialsport.com/techincal.htm

one eyed willy

yup,i want to do a electronic boost controller,probably start with 4-5 psi for daily driving.

Lito

I'm getting a yellow spring for my setup for that exact same reason.

Good luck!.

Simon1

Me too. 5 lbs spring for daily driving and a push of the high button cranks it up to 9-10 psi.

I've got the 38 mm Tial and a 60 trim also. It works fine.