is my electronic BC bad or do i need a different wastegate

[inneed4dsm]

i have AEM TRU boost and i think it either sucks or its broken or i did something wrong... ok i've had 3 different turbo's on this car now and it doesnt change what will happen is i can set the boost to 20psi if i wanted too and it still wont go past about 12 psi.. now my question is do i need maft? or external wastegate? any suggestions

 

[SpawnedX]

More information please.

Turbo? Exhaust?

You won't NEED an external wastegate unless you are having the opposite issue, uncontrollable creep.

 

[inneed4dsm]

ok... 16g, apexi dp, thermal 3" catback

other than that its all stock...

 

[SpawnedX]

Is it a small or big 16G? If it only goes to 12 psi, this is concerning because a boost controller cannot cause you to run less PSI than the WGA spring is set to, which on a 16G is 1 Bar (14.5) with the original WGA.

So here is what we have, a simple mechanical system, boost goes from the controller to the WGA and causes the flapper to open to control boost. Step one, if I was you, go from your boost source to your WGA and do some pulls and see where your boost is.

 

[inneed4dsm]

its small and whats weird is... when im under a load climbing rpm's itll go like 10.5, 11, 10.7, 11.2, 10.9 etc... basically it goes up and down... confused

 

[SpawnedX]

Boost leak is sounding pretty likely.

 

[inneed4dsm]

ok ill do a test this weekend ..ive just went through so many times and tighten the crap out of everything but im gunna do it anyways

thanks

 

[SpawnedX]

Take the WGA off the flapper and make sure you can open and close the flapper by hand with ease.

 

[inneed4dsm]

alright ill do that too