what size are you guys running?? i got a pt67 with a tial f38 and after some troubleshooting today i think i need to upgrade.... my 4lb spring makes the same boost as my 11.5lb at wot...but at part throttle it regulates at 4psi vs 8psi with the other...this sucks since i gotta disassemble a get some new flanges welded on....it would be nice if there was a universal bolt pattern with these things....

 

38 will be a bit small depending on placement, and size of your exhaust housing/wheel will matter. If you waste gate placement is less then ideal then you will run into boost creep/control trouble with low back pressure pre-turbine.

 

its located right behind the turbo and its a .94

 

Mike did your truck fixed yet?

 

A really good friend of mine has been playing with race Porsches for a very long time. He always told me to use the largest wastegate possible, 50-60mm. Told me that the larger it is, the easier it is to control boost.

 

no yesterday i was just playin with the vacuum lines and had everything referenced off the intake. its more manageble now but at wot i still see 10+psi

yeah im just trying to make sure its nothing small i missed before i go that route

 

Hey what's up dude can you tell what all you had to do to run the tbss 90mm intake and if you used the tbss 90mm throttle body I would like to do the same thing, oh and what size your exhaust crossover pipe?

 

your going to need the manifold, rails, tb and i used the evap crap also. your current injectors will fit right in and everything will bolt up. also the drx harness is need for the tb to work properly. just make sure you get the right manifold with the cathedral ports....also my cross over is 2.5in

 

I was wodering about the throttle body in the pics you sent me you have the truck 90mm but you had to use the drx harness, all the guys on the forum said that throttle body wasn't good for FI had a high fail rate any probs?

 

nah man no probs with the truck one, works fine for me!