M35 Missing Boosts..

[matt_gumpym35]

Hey lads,

Day before yesterday the car felt quite sluggish, thought it may have been the heat but noticed max boost was hovering around 11-12psi on the profec instead of the usual 16ish psi then tappering off at higher rpm.. adjusting the ebc isnt having much of an effect either.

Ideas on where to look first?

Havent had much of a look yet, got all day saturday to figure this nugget out.

[Ben C34]

Boost leak. Pressure test to find it.

[Dmyze_]

Yup, definitely boost leak - I had the same scenario recently.

Check the intercooler piping and the small rubber hoses that lead to the solenoid/actuator, BOV and intake.

[BoostdR]

The waste gate prematurely open when they get hot. They are very very soft. An additional spring is usually required.