SR20 Boost Problem?

[JDMxJosh]

My power band seems to act up.
-At times when i punch it, it'll pull fine.
-other times when i Punch it, you won't get the hard pull till almost at the very last second.
-Then i have times when i punch it, and it won't pull hard at all. (like you cant feel the boost kick in or something)

It can't seem to be a boost leak, cause a boost leak would happen on every pull right?

Here are my mods:
S13 SR20DET Red Top
HKS Hi Power Exhaust
Megan TP & DP
Trust FMIC
Koyo radiator

HELP?!
thanks for your time.

[240cody]

im having this problem, and finally found the solution! my internal wastegate was stuck.open. i would build boost, hold it, hold vac, but the car never actually pulled. only early morning when it was cold out! even then only sometimes. but i ordered a new turbo and she a beast again.

[JDMxJosh]

im having this problem, and finally found the solution! my internal wastegate was stuck.open. i would build boost, hold it, hold vac, but the car never actually pulled. only early morning when it was cold out! even then only sometimes. but i ordered a new turbo and she a beast again.

So you think its the turbo?
Well the turbo is going bad, but this is the 2nd turbo on this motor, and i had this problem since i swapped out the turbo.
This boost problem is such a tease haha.
who knows, maybe i haven't ever driven my car with its full potential.
I ALWAYS seemed to have boost problems, sad to say.

[240cody]

yeah man that sucks same with me kinda. one day the car was sooo much faster i was like wtf?!? and so it woukd be fast sometimes and not others. once you replaced your turbo did you tune your car? i know that has whole lot to do with it. or maybe try n external wastegate setup. i think i know if the turbo.spools and holds boost and vac, its your wastegate thats the problem. mine was stuck open. new turbo nd wastegate nd a tune and shes great! good luck man keep us updated

[evan1242]

Try a new waste gate actuator.
Don't spend all that money at once on a turbo. Diagnose and try cheaper things first.

[c-los13]

how can you diagnose if the wastegate actuator is bad????
i saw a hks pretty cheap somewhere