tubro only holding 2psi

[codywv]

I have a friend that has a 97 talon tsi that did a fresh build with a 50trim turbo and external wastegate. He said it is not spooling past 2psi. Anyone know of what could be the problem? I told him to look for boost leaks and possibly adjust the BOV.

 

[Rsawd95dsm]

More than likely its a boost leak. Do a BLT right away.

 

[Colt4G63 also]

Huge boost leak, open wastegate, weak BOV spring, all of the above...

Tell him to bring it by my shop and I'll fix it for money.

 

[Paintballaa5]

Waste gate stuck open is first thing that comes to mind.

 

[codywv]

ok, Thank you all for your input. I may swing by his garage and check it out and do a BLT. Just trying to get ideas before I head there.

 

[DJ23GSX]

Also check for pre turbo exhaust leaks around the head to exhaust manifold gasket and between the exhaust manifold and turbine housing gasket. Double check the vacuum lines on the wastegate to make sure they are correct. I had a similar issue in my car and turned out my boost gauge line had a kink it and wasn't reading accurately. Does his car feel like a slug at only 2psi or does it feel somewhat normal?

 

[99ECLIPSEGSXDSM]

Huge boost leak, open wastegate, weak BOV spring, all of the above...

Tell him to bring it by my shop and I'll fix it for money.

That's kind of a long drive from west virginia for what could be a boost leak

 

[JusMX141]

Wastegate sealing ring missing...that's my guess.

 

[1glaserfwd]

^^^ Beat me to it, exact thing happened to me a couple years ago could not get more than 4psi on a evo316g!