Help!!! Have A Serious Boost Problem

[PSSSHHHGSX97]

My GSX was working great for awhile, and all of a sudden when I start boosting over 14psi
the car starts breaking up as if the cars not fireing rite . I did replace all clamps with T- clamps. WTF could be the problem???? Its is so frustrating that I cant figure it out. I do have WB255 pump, 660 injectors, B16G ported turbo. Could the turbo have gone bad, Engine gone bad? Please someone HELP ME. I was boosting 20-22 psi for awhile so it was working fine. its just all of a sudden. Also replaced spark plugs to. HELP

 

[crxp-o-s4now]

fuel cut for some reason..maybe because of a boost leak?? i have the same prob but my mbc is messed up and im stock

 

[PSSSHHHGSX97]

Is there anyone else out their who can give me answers??? Thank you crpx for your reply PLEASE PEOPLE HELP ME

 

[97EclipseGS-T]

what do you have for internals? Stock? Because if your running stock internals on a setup you have, then you have some balls. As for your leak, here is a couple of things

-any check engine lights?
-did it start happening after a mod install? or was it random
-smoke if any and what color
- if you have 20 psi, that means you have a boost controller. Thats where I would start first. Make sure it is setup right.
-what are you running for a BC......Manual or Electronic?

 

[ELC 4g63]

i have the same problem as you, my car was running fine until i installed sum ngk iridium spark plugs then it started to bog and not spark right in higher boost. i switched back to my old ngk spark plugs and it ran better but it still bogs a little bit.

 

[ddavisaf]

fuel cut for some reason..maybe because of a boost leak?? i have the same prob but my mbc is messed up and im stock

That is not fuel cut, he is bogging down...

Boost leak is a good place to start though.
What kind of spark plugs and what are they gapped at?

 

[PSSSHHHGSX97]

Well I do have ARP head studs. Fro what I read all over these forums I saw it was alright to boost up to 25 psi with stock internals, am I wrong ? Also I just chaged my NGK plugs to iridiums but i am going to change them back to NGK from what I hear about those other plugs. I was boosting 1.5 bars no problem for awile and then when I chaged to T-clamps it started happening. I have a greedy profec b series controller.

 

[mtwollet]

fuel cut for some reason..maybe because of a boost leak?? i have the same prob but my mbc is messed up and im stock

you'll know fuel cut, I was going down the highway I sounding like a gun going off

 

[mtwollet]

you'll know fuel cut, I was going down the highway I sounding like a gun going off

After that I bought 550cc injectors only to realize I can't pass emissions testing

 

[ELC 4g63]

alright guys i just had my car checked with a cumputer and if hes having the same problem with me its that first of all his car doesnt take iridium spark plugs so take those out and use original ngks. then i found that if you have an air/fuel gauge it should read rich when boosting but once it hits that misfire and if it reads lean than your problem is that the cars computer is cuting off the fuel from the fuel pump. so far i was just able to clean up some of the misfiring with just basic tuning but ill get back to you when i find out more information.

 

[97GS-TSpyder]

an AF guage wont work with your car,
And its all over the forums to use the stock plugs, no platinum or iridium. glad you figured it out though