Turbo: Greddy 15-G TDO4-H, and ebay I.C. HKS bov
I been running without an intercooler for a while, and I saved up enough money and bought a decent I.C. Installed it. I adjusted the wastegate, shortening the actuator rod. I turned the car on, it hesitated... so I applied gas and my car held a rough idle around 600 rpm.
Problem is, my cars is not holding any boost. It's always in vacuum. I checked for leaks, no leaks. Everything is tight and in working order.
My boost gauge is working btw, and I notice a lot of bogging down. Without the intercooler my car hits 5-10 psi at 3500 rpm in each gear. Now what could be wrong?

 

Are you sure you adjusted the rod the right way?

 

Loose hose, intercooler leak?

 

sounds like a leak to me if you didnt change any other factor except adding an intercooler + piping.

 

Boost leak test. If it passes, look at the actuator again.

 

If it didnt leak you'd have boost, right?
That - or you're not making boost: wastegate open?

 

Check your intercooler for holes. Some intercoolers have threaded holes that need screws in them, and some are just made wrong.

 

You would need a LOT of holes in the intercooler to have no boost. For example, when the hose comes off the idle speed valve on my setup, I have a 3/4" diameter hole and the boost drops about 3 psi at the top end. You can hear a loud wooshing sound whenever it is in boost with the hose off.

I'd look at the wastegate if it were my car...

 

hmmm... threaded holes in IC. I'll check that tommorow asap, maybe the wastegate is stuck open? I'll boost leak test it tommorow and keep yall updated.