well sometimes when im driving around, and i come to a stop, the car sometimes has trouble keeping its 900 idle, sometimes its real low like 400, but this only happens once in a while, this never happend before, i know it isnt the maf cause its new, what can it be, there is no vac leak

 

whats all done to the car?

 

900 on the idle is pretty high

 

thats where mine has always been to,,800-900 (2000-M6)

 

My car's idle would dip when I had a bad O2 sensor. How long have you had this problem?

 

well, about 3 months ago i put on a fast intake on my 98 z28 with a nw 90 mm tb, i also have a ws6 lower airbox to go with my ultra z hood with an slp loudmouth, thats it, after my intake install it was fine, but about 1 month ago it started doing it, like 1 once a week,

 

oh i also have a tune with hp tuners, 12secss on here tuned for me, it wasnt a dyno tune

 

The motor might be running a bit on the rich side and its fine when in the higher revs but when coming to a stop its too much fuel for idle and causes the motor to stumble. Id say its probably the tune. But isnt so bad that it is an emergency.

 

is it dangerous?
i mean can i lose my engine over this?

 

Did you swap out the valley cover bolts for the FAST button head style?

 

yes i did. and i went ahead and switched my pcv system with the ls6 style