SuperZ

iTrader: (2)

Well I got my car from the tuner(Boost Performance) and the drive ability is great and running strong with 12-14psi

Question
12-14psi is the max boost this thing will see.I have a 17 pound spring in it and the WG never opens.The BOV isnt leaking and there are no exhaust leaks.Ialso took the filter off and even though it does run better with it off no more boost.

Any ideas?I need 18+psi.

theblur98ss

iTrader: (71)

What size is your dp? No vacuum leaks anywhere? What kind of power did it make?

JZ 97 SS 1500

iTrader: (2)

Blow the wastegate shut or put a block off plate on it to see what happens. Also pressure test the intercooler system.

Phil99vette

iTrader: (11)

How many RPMs have you spun it to?

NA$TY-TA

iTrader: (21)

So no boost controller?? Running it off the WG spring alone?? More info.

Kyle

Phil99vette

iTrader: (11)

And are you 1000% sure its got a 17psi spring in it?

SuperZ

iTrader: (2)

its a turbosmart WG. I had two 7psi springs in there and then I put a 10 in there combined with the one of the 7s and the boost did not change.Ive ran the 10+7 combo before on my old setup and it boosted 17+ and I took it right out.

Down Pipe is a 5inch necked to 4 inch oval pipe under there car with a Dr.Gas 4 oval muffler

And yes right now its running of WG only

And have spun it only about 6200 so far.

Qwick98Z

Use a mighty vac and check to see how much PSI it takes to open the gate, Pressure check for boost leaks, check the boost at the turbocharger then at intake manifold, check the BOV, exhaust leaks Bla bla bla.



make sure your WG spring set-up is not the problem

10# WG spring and a boost controler is the hot set-up

Mr.MartyStone

iTrader: (12)

What kind of numbers did you see on 12-14ish psi?

Nate

darrellk

iTrader: (2)

yeah gorge is a great tunner he is going to tune mine in a couple of weeks

Mike101

iTrader: (3)

Cody I want a ride...call me

frcefed98

iTrader: (16)

Man I hate issues like this.

I know you said there are no exhaust leaks, go back over all bolts on the hotside, v bands too.

Check the intake manifold, make sure one of the gaskets didn't pop out when you were installing it. I had this happen and it made finding the leak a tough one.

Pressure test the whole IC system from the outlet of the turbo to the TB.

Check the turbo for any FOD that might be lodged in there. Maybe a coupler is sucking shut under boost?

Hope you find it.

SuperZ

iTrader: (2)

Yeah i dont know what it is.I gotta get it figured out though