HELP!! can't get pass 4k rpm & 80mph on WOT

[doodie]

This GSX is an AUTO and the mods its got is:

1. Turbo XS RFL Bov
2. apexi N1 turbo back exhaust
3. intake pipe
4. intake filter
5. upperintercooler pipe

no MBC, no fuel management whatsoever.

If I'm going around 75mph and decide to go WOT, the car will get up to 4k RPM at full boost and around 80mph but when I hit 4k RPM, the car seems to stop pulling and sorta bucks a little and I hear the BOV go (foot still on gas). The car doesn't pull at full boost (16psi, no MBC) but I can still get pass 4k RPM and 80MPH by not boosting. I just changed the o2 sensor. can this be fuel cut?

 

[XATgsx]

i have same problem with my 95 gsx. I also just replaced the o2 sensor because the check engine light came on. But it still does the same thing. I haven't figured it out for sure yet but i thing it sure but i would check your egr solenoid other related stuff. But i also don't have a MBC or the stock BC, it died somehow so right now it is bypassed and Im waiting to get my MBC.

 

[Idiot Stick]

this could be an easy fix. when i had my rfl for a couple weeks, it got stuck open, and i couldn't do much with it. wouldn't build full boost, i heard the bov leaking. all i did was unscrew it (carefully) and just lube it up real well. Turbo XS bov's have a problem with sticking sometimes. check this out and see wut's up.




ps. it's not fuel cut, youll definatley know that when u hit it and fly through the windsheild.

 

[doodie]

HAHAHA thanks man, that was funny flying through the windshield. What should I use to lube up that BOV? WD-40?

 

[Idiot Stick]

, that's wut i used and it worked.

 

[NOAHSR10]

I would hook up your datalogger and c if its signaling POS...
j/k maybe its the BOV.. do your car a favor and route it back to the intake, maybe shell listen to u

 

[doodie]

Yeah, I had a temporary fix. I stuck my Type S from my GST on to the GSX and rerouted it. Voila everything runs perfect even better than before. But now I need one for the GST