GtsN-95.0

I would like to know if anyone else on here is running a a greddy profec b II. Im having problem turnig up the boost past 13 on my 1jz I would like thow what others have there set at

OneJay

iTrader: (14)

What do you mean you are having a problem? Do you mean like fuel cut?

GtsN-95.0

well I have been running 16psi for some time now, and I had a intercooler pipe come off I replace the clamp and every since then I can get 16psi back even with the same settings. I have reset the ecu and everything but no matter what I can get past 14 and it drops down to 12 I have changed me setting about 100 times but nothing.

Mr.NA_T

^^^^are you still on stock twins..

GtsN-95.0

yes still on stock twins

BigManne

iTrader: (3)

if you don't have anything to do away with boost/ fuel cut then that is your problem. Greddy Boost cut controller or HKS Fuel cut controller will fix your problem.

BigManne

iTrader: (3)

or maybe you have another boost leak

lemmiewink

Did you figure this out yet? I recently disconected one of my intercooler clamps and now this is happening also. I can't boost past 13.9 psi and it falls off towards redline. I also have the greddy profec bspec ii

Also, no changes in any setting from 30% to 100 % [set] value.

I have a few ideas on how to trouble shoot, but if anyone else has any input that would be a great deal.

Hopefully, you get it remedied also.

96sc300

iTrader: (1)

Sounds like a boost leak. Maybe when you took off that one clamp coupling you might have moved around another one. I would go around check out all of your hard pipes and fittings make sure they are nice and snug. Unless like everyone said boost/fuel cut but you would deff know if it is boost/fuel cut because when you hit cut off it is like a sudden brick wall of power loss.

$C300

iTrader: (1)

are you guys still runing the factory recerc. valve?

lemmiewink

I'm not. I'm runing new style hks ssqv.

Alright so I swapped out the greddy unit for an MBC and it holds boost wonderfully. So I am thinking it is the greddy unit.