somethigns rong 5sfte, blaaa craig needs help Options

[urbandork]

When im runing 7 psi everything is fine. but as soon as get up to like 10 11 psi my eninge gets all wacked out.

at 10 11 psi it makes a really bad sputtering sound, jerks around and loses power. Is this the 2 bar map sensor doing that boost cut, is it cutting fuel?

i have an mbc on it because before the turbo was only doing like 4 psi. I had to take the cap off the nipple on the second pipe of the waste gate to get it to do 7 psi. Now i have it caped off with the mbc set at 7 and have problems with it when i get up int he 10 psi range.

This post has been edited by urbandork: Jan 30, 2006 - 3:32 PM

[urbandork]

im running 42 pound bosch injectors so about 441cc

af is great i took a run today and had a stable 12 to 1 af running 67 kpa which is 9.7 pound. which means my mbc keeps a stable pressure setting and im not leaning out.

my btm set to start at 3 psi and i have it retarded a lil under half a degree for ever inch of presure.

my car runs fine with presure around 9 to 10 psi or so but when it hits around 10.4 or 72 kpa it starts acting up.

ive also noticed that it usually actus up when im punching it. after the tantrum i find that the pressure tops out at like 72 73 kpa, which is still around 10.5 psi. one time tho it spiked and sputtered at around 82 kpa which is 11.89 psi

I think im hitting boost cut/fuel cut off. do i need a fcd?

Im also using just a regular mbc perhaps i need one of thos ball spring ones that prevent boost spikes?