Boost Issues

[RBLUV]

hey guys,

its not really a problem but i just want to know why and if i can fix it,

when i put the pedal to the floor say in 2nd you can hear the turbo spooling up and boosting but the car just feels like its holding back,

but when i only put my foot down half throttle the car boosts a lot better,

do i have a leak somewhere? or too much fuel to the engine?

mods are:

RB20DET

greddy fmic

3" front and dump

bosch 040

cheers,

Kyle

[Pattygtst]

engine management system like a apexi power fc tuned correctly should fix it

[RBLUV]

the cars basically stock though?

maybe a dead cat?

any suggestions?

[amzer24]

hey matey I got the same problem in my r32, wierd one it is indeed. you don't have any aftermarket pipes in the engine bay do you?

[RB32]

i may suggest plugs.

I had the exact same problem in my rb20. Car went better at half throttle rather than full throttle.

At full throttle the car seemed to be holding back and misfiring.

So i say change plugs and gap to .8mm. Clean coil packs with contact cleaner while your at it to.

Cheers Adrian

[~R33AzzA~]

Mate I had the same problem with my 33 a few weeks ago, I had the timing set at RE customes and the car goes much better.

I can only run factory boost though as soon as it goes above 9 psi it retards and looses power.

I was told that if I get a pfc it would be fixed completely.

*edit.. I have the same mods on mine.

[Travis Trayhern]

engine management system like a apexi power fc tuned correctly should fix it

everyone and there pfc its a nearly stock car dumb ass.

yeh check plug gaps, and look for splits in any of the silicon intercooler pipes had a 32 gtr with the a similar problem when he put the boot into it there was a split that would open up and let the boost out but when putting the booting into her slowly it would open up.

and its a real bitch to find to you have the squeez the pipes for it to show.

[Travis Trayhern]

and what about ya 040 whats the fuel preassure set to? this can affect it to mate

[RBLUV]

i have no idea what the pressure is set to, i just chucked it in and away i went, ive read that unless you get a tune the pressure doesnt change does it?

[TTT]

search the forums for a pressure tester.

basically, you can make it yourself.

pump some air in to the intercooler pipes to see if there is a leak anywhere.

[teng]

Alittle off-topic but how much is it to tune a powerfc over there in Australia as it's ridiculously expensive to tune one here in my country.

Edited July 22, 2008 by teng

[D_Stirls]

It probably isn't because there should be a wire brace in your intake to stop it, but it sounds like your intake is sucking flat under high load.