fixed the running rich problem

djalkyd · 05-02-2006, 05:18 AM

ok, so i am back to square one. i bought a stock afm and put it on and the car runs like crap again.

i put an adjustable fuel pressure regulator on it and have stock pressure dialed in. the timing is set at stock also.

here is what is happening.

if i take off slowly, the car is fine. if i get into the throttle a little more then the turbo starts to spool when it shouldn't and as soon as i start building any kind of boost up to 5psi, the car jerks and gets real sluggish, runs super rich and just feels like crap.

as soon as i put the lexus afm on then it runs kind of fine. if i am cruising around and start to build boost, as soon as i hit 1 psi, i feel a slight hesitation and a little sluggish but if i jam on the throttle, the turbo spools up real loud and the car goes but not like it did before this problem.

it seems like the turbo spools up when it shouldn't and it is extremely loud like a vacuum cleaner sucking at my ear. i have the k and n filter with the front of the air box cut out so maybe it is just a normal sound.

i checked the tps and it is fine, no boost leaks because i hold 5 psi just fine... or am i suppose to have 7psi? i dont know what the stock boost level is suppose to be.

i checked for vacuum leaks and i cant hear any. tomorrow i am checking the egr system to see if it may be clogged.

the car just feels so slow now.

any ideas, please help.

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05-02-2006, 05:18 AM	#4
djalkyd 3" Exhaust Join Date: Jan 2006 Location: sacramento ca. Posts: 55	ok, so i am back to square one. i bought a stock afm and put it on and the car runs like crap again. i put an adjustable fuel pressure regulator on it and have stock pressure dialed in. the timing is set at stock also. here is what is happening. if i take off slowly, the car is fine. if i get into the throttle a little more then the turbo starts to spool when it shouldn't and as soon as i start building any kind of boost up to 5psi, the car jerks and gets real sluggish, runs super rich and just feels like crap. as soon as i put the lexus afm on then it runs kind of fine. if i am cruising around and start to build boost, as soon as i hit 1 psi, i feel a slight hesitation and a little sluggish but if i jam on the throttle, the turbo spools up real loud and the car goes but not like it did before this problem. it seems like the turbo spools up when it shouldn't and it is extremely loud like a vacuum cleaner sucking at my ear. i have the k and n filter with the front of the air box cut out so maybe it is just a normal sound. i checked the tps and it is fine, no boost leaks because i hold 5 psi just fine... or am i suppose to have 7psi? i dont know what the stock boost level is suppose to be. i checked for vacuum leaks and i cant hear any. tomorrow i am checking the egr system to see if it may be clogged. the car just feels so slow now. any ideas, please help.