boosting problem

[omargsx99]

hope somebody can help.. I just got a fmic installed at noribilt but i think they did a shitty job. Everytime i try to boost over 4-5 pounds the car starts losing power and gets really slow it just freaks out anybody know why?? its like spitting oil i think too idk from where but if i boost anything under that the car runs just fine..and i know the turbo is working cause i can hear the flutter after i shift..please help

 

[jpmxrider489]

Did you check for boost leaks? Sounds like your problem? What turbo? Maybe the intercooler is to big for you setup.

 

[White mikegsx]

First boost leak test what is your vacuum pressure at should be near 18in hg at idle unless you have cams and other upgrades..

 

[ryan_c2g]

Check your vacuum lines, if you have mbc make sure it's plug in properly and not T-off with the bov. Sounds like vacuum problem

 

[Bolo'sTalonTsi]

Also, check your bolts on your manifold. When mine loosened on my old 92 the turbo kinda bogged out a bit, tightened them back up and it ran just fine. Also, if you have a GM MAF & MAF Translator, check the dials on that.