Today I noticed that I'm hitting full boost about 1500 RPM later than usual. Here's what I have:
T-78, HKS 40mm wastegate, Greddy profec. I'm going to check it out later, but I figured I would try to get some input anyway. Thanks.

 

check for shaft play? maybe sticking WG?

 

I'll make sure to check that out...probably tomorrow because I'm tired. I may just try bypassing the boost controller tonight to see what happens.

 

I rethreaded the stud on my v-band clamp so that I could finally tighten it well and get rid of that huge exhaust leak, but I still hear some sort of leak. I'll tighten my manifold nuts when the turbo cools down, just in case they're loose.

It's possible that my wastegate could be open a little bit, and maybe that's where I hear the small leak. I'll just get under the car while it's running to see if any exhaust is coming from the wastegate.

 

so what did you find?

 

Nothing yet. Yesterday I was lazy, and today it was raining. Maybe tomorrow morning.

 

I was a little lazy today. So all I did was tighten the clamps on the IC pipes. It seemed ok, but then I had no boost at all. That made it easy to figure out. It looks like I had a small leak at one of the silicone couplers that kept getting bigger. That explains why I was still making boost.

 

Hopefully it's just the IC piping. I'd hate to have to buy a new wastegate right now. I re-did the piping from the turbo to the IC, and it was kind of a rush job, so...

 

what turbo manifold do you have?? also do you smell exhaust fumes??? very easy to tell if you have a leak or not.

good luck

 

HKS cast. It's hard to pinpoint the source because I have a bad gasket after my downpipe, but I think I've been hearing ticking near the manifold. The new gasket will come today. So that will force me to get under the car to check things out.