Boost and ECU update

[buzurk]

I think i might have some boost leak issues maybe

is it normal even in 5th n 6th for boost to start tapering off from around 16 psi back to 13 - 14 after about 3700 rpm

Is there anywhere you can rent or borrow, loan a dash hawk to get this info and post up ??

[Jmac]

Yes the boost is normal as per your other post.
If you are worried about boost leak the most common area is between the turbo and the intercooler, at the rear of the motor.
Check the hose is properly seated either side and the clamps are tight.