Only 6 psi ??

[a_sesshoumaru]

I upgraded my turbo to 50mm, i have 3" free flow exhaust, shimmed my wastegate and still same 6psi, i have no codes. What could it be?? if it is the wastegate if i conect a MBC would it raise my boost? or would i still have the same problem¿??

 

[swaq]

Boost leak maybe?

 

[foreverpsycotic]

check for boost and vac leaks.

 

[MKIIINA]

boost/vac leaks, weak wg actuator.

 

[NA86.5]

:withstupi

 

[boostadikt]

yeah throw a MBC on it and you should see a little more, if it is still not holding very much boost then you have a leak

 

[Mrbaboon]

Also check for exhaust leaks around the exhaust manifold connections to the block and turbo, and also the EGR.

I had an exhaust leak on my manifold and I could only boost to 4 PSI (couldn't hear it over DDP and straightpipe though).

 

[starscream5000]

Exhaust leak, boost leak, vacuum leak, shitty stock boost gauge... What else?