Celica Gt4 Boost Problem Problem

[ashneel]

hey guys

well my cousin has a 91 celica GT4 and his having boosting problems. on full throttle the car cuts out boost totally and runs like an NA until you turn the car of and turn it back on. and we cant figure out for the life of us whats wrong with it.

its a stock car with only mods done is 3" turbo back exhaust, BOV and CAI. now his CAI is setup like a ram pod so his pods sitting under the bar getting air forced into it basically.,

and the previous owner did a gay BOV install. its got a top mount cooler and its running two bovs. the factory one and the aftermarket one which is attached to the pipe that comes straight out of the cooler into the TB so its just attached to that.

his got a new high flow fuel pump installed and stock fuel pressure reg still so dont think fueling would be the problem here

ppl have been telling him its because of his CAI. the ram air gets forced in to much and stuffs up the A/F mixture and it overboost so the ecu cuts the boost totaly which feels gay.

so any thoughts from you guys would be great on whats happening.

thanks

Ash

[Sqd32]

hey guys

well my cousin has a 91 celica GT4 and his having boosting problems. on full throttle the car cuts out boost totally and runs like an NA until you turn the car of and turn it back on. and we cant figure out for the life of us whats wrong with it.

its a stock car with only mods done is 3" turbo back exhaust, BOV and CAI. now his CAI is setup like a ram pod so his pods sitting under the bar getting air forced into it basically.,

and the previous owner did a gay BOV install. its got a top mount cooler and its running two bovs. the factory one and the aftermarket one which is attached to the pipe that comes straight out of the cooler into the TB so its just attached to that.

his got a new high flow fuel pump installed and stock fuel pressure reg still so dont think fueling would be the problem here

ppl have been telling him its because of his CAI. the ram air gets forced in to much and stuffs up the A/F mixture and it overboost so the ecu cuts the boost totaly which feels gay.

so any thoughts from you guys would be great on whats happening.

thanks

Ash

mate thats the fuel cut that he's hitting. used to happen on my mates gt4 when he wound up the boost, checkout toymods.com (might be ".au" aswell not sure) and have a search and ask around on there. there is a mod to stop it but is only a temp fix, though it does the job well

[Birnie]

I've always wondered about these cars.

I like the later models though

How does it run, when running normal ?

Goes hard caompared to your R33 or pretty average?

[ashneel]

thanks Sqd32 ill check that out also

I've always wondered about these cars.

I like the later models though

How does it run, when running normal ?

Goes hard caompared to your R33 or pretty average?

well honstly speaking i wouldnt buy one unless i was really into handling and cornering speed.

my R33 with exhaust manifold leak still beat it. even my magna which was a stock 3.5L V6 FWD with only exhaust mods and auto beat it.

they are shit to drag in but once it gets going then its ok. but through the corners it sticks to the road like glue and this is stock suspension and ride height just with bigger stabliser bars.

its basically if you like them or not. i dont like them so even when running normally it was still crap to me but my cousin loves his celicas so he loves it.

i get a major headace when he pops the bonnet. so so so so so much crap just jammed in there. but ye nice cars but i wouldnt get one

[STATUS]

these have a ebc as std and a fuel cut piss both off. both easy to do.

[BOZ22N]

Hey mate these cars are a night mare under the bonnent, they have all sorts of valves and different hose and wiring configurations from the factory.

It is the combination of the new exhaust and the CAI that is causing the car to hit fuel cut. You need to return the air box to std and monitor and controll the boost wich is hard because they have a VSV valve, and an electronic boost controller which limits boost in first gear so it is a bit more complicated then putting a bleed valve in the system to controll it.

You are better off pissing off the std computer and getting either a "link" piggy back computer or a full stand alone computer like a "haltech" or somthing similar, this will eliminate all of your problems and give you a nice increase in power.

Best of luck

Ryan