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View Full Version : My s13 black top sr is stuttering


crazyjoe1
01-12-2010, 10:49 PM
Hello my black top is stuttering bad whin I am flooring it I need help bad i have done just about everything to try an fix the problem here is what i have! the car had the problem before the stock sr20det i did all stuff below in hopes that it would fix it but no!

93 s13 black top sr20det with t2876r turbo, nismo 550 injectors, upgraded fpr, toyota supra tt fuel pump, front mount intercooler, greddy type rs blow off valve, 3 or 4 month old iridium spark plugs, i have done the 12volt relay to the fuel pump, an it is running 14 lbs boost an the car has been tuned!

everything i have checked i have changed the coil packs, i have changed the fuel pump to another walbro 255, i have checked the stark plugs i have checked all the intercooler piping, the compressing is good!

I have looked just about every where an asked everyone I know to see what thay say if it would help an nothing helped at all! so if u have any ideals at all please tell me an ill try it an see is it works !

LayNLow
01-12-2010, 11:19 PM
Sounds like it may be spark related. Check your timing and spark plug gap.

rubhamusan
01-13-2010, 01:11 PM
Boost leak. Bad water temp sensor or may be just grounds.If you only have one ground I would say thats it.

HPKMotorsports3
09-13-2010, 09:57 PM
dirty maf or messed up maf...

Big Zee
09-14-2010, 07:21 AM
does it rev through the entire range ? ir stop around 2500 ? id its that then your maf is euther unhooked or really needs cleaning