I heard exactly the opposite. I was told that most of the fancy electronic boost controllers don't hold boost as well as a manual. The advantage is they let it hit max boost sooner. Just what I was told, never had a boost controller my self.

 

I've always heard that electronic BC give you a better boost curve..

I've been running the profec but on dyno day i disconnected and ran a manual boost controller because the Profec is a PITA to get the boost where you want it.

Greddy reps don't even know themselves what the hell they are talking about.

but with the Greddy when i got it to work I got 1psi creep. With the manual I am getting 2.3psi creep

 

Boost controllers are useless if you are trying to boost below what the stock wg spring is set at. For instance if I'm boosting 7 psi and wanted to get 6, it would be impossible to achieve with a boost controller because boost controllers can only raise the boost on the already existent wg spring.

 

I was actually suggesting you removing the boost controller all together or at least disconnecting the hoses just to be sure.

 

alright thanks I'll try that today

 

Yeah I would take the bc out altogether and see if that helps. If that doesn't work I would suspect the wastegate spring.

 

There is not much you can do about it. Every GT1 kit out there with a garrett GT turbo has the same creep issues. You can either live with the creep, or tune the boost up the the highest point (in your case around 10psi).

 

ah...won't I blow my engine running 10 psi everyday?

 

10 psi is not a good idea. A really good tune may give some longevity but I don't know of anyone that has lots of boosted miles and has had the motor last. I don't understand why you guys are having boost creep with your manifolds. I had no boost creep with my Full-Race set-up when I drove it in Vegas last year after the wastegate was fixed.

-Chris

 

I really don't think you will have a problem at 10psi. The only failure I have heard of that was boost related was a cracked sleeve and that happened at 26psi if I remember correctly. When I get back from my vacation I am putting my car back on the dyno and am going to go to 20psi. This is with a 2mm mind you, but that's still a higher effective comp ratio than 10psi on stock. I'll let you know how it turns out.