ok i just installed my mustang 42lb injectors and sfum.everything is fine at idle well it sounds good its at 18psi but when i rev it up it sounds like somthing is wrong and shakes more than usual.when i put it in gear and let off the clutch it starts poping and wants to die not sure whats going on i checked everything i could think of and still the same please help thankx

What do you have you static, idle, and boosted fuel pressures set to? Rough idling and sputtering sounds like poor fuel tuning.

i have the static idle presure at 18psi and the 2.72 disc with the dark harder spring.what do u think i should do?

your static pressure should be higher then 18psi. somewhere around 50. (at least thats the info i've been given, but i've havin a hard time gettin my sfmu to run right)

Originally posted by 98starGS
your static pressure should be higher then 18psi. somewhere around 50. (at least thats the info i've been given, but i've havin a hard time gettin my sfmu to run right)

Umm no. 50 if your stock injectors; that's probably why your sfmu is not running right :P j/k


-------jezreel
1998 GS with hrc stage 2, sfmu, ml, prokits, egt, boost gauge, apexi tt, haydans tranny cooler, costum dp, dr. uber groundwires, dynotune fp gauge. gst muff, turbo spoiler
Boostin since Aug 03.

nothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!
thanks for www.kaptainmyke.com for the sig hosting :thumbsup

change your fuel filter.. pressure means nothing if you dont have the flow.

i installed a new fuel filter also and my idle is 18psi and static is 31psi and ideas

anyone, i realy need some help i have no clue why its doing this!

hook up a logger and see what your fuel trims are.
Michael
99gs HRC Stage 4000+ 8-Injector Setup
2004 Honda Accord V6 (240 hp)
Car info & pictures at http://www.cardomain.com/memberpage/520269