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View Full Version : my friend needs some help with his LT1

98tadriver
01-20-2007, 02:49 PM
He's got a 96 T/A M6 and put a LT4 cam in it, 1.6 RR's, springs, etc. Its a basic bolt on car w/ 36lb injectors, adj fp regulator, fp gauge, & a pcm4less tune.the guy from pcm4less told him to run 46psi of fuel pressure. the problem is that the car wiill not idle for long at all, he has to keep hitting the throttle to keep it running, and as soon as he would let off, it dies on him. then it takes a while to start back up, sometimes it doesnt start up. It freakin reeks of fuel at and when the car is running with 36psi of fuel pressure, my eyes and sinuses were burning from the exhaust fumes.(running too rich?) . any ideas? hope thats enough info. no egr or pollution pump either. Is it Not getting enough vaccum? too much vaccum? im out of ideas. It also seemed like when i put my hand over the MAF, it fired right up instead of taking a while to start
NJSPEEDER
01-20-2007, 03:19 PM
pcm4less does garauntee their tunes and will offer adjustments as needed. did he try talking to them yet?
get it hooked up to a computer and data log what is going on. OBD2 has plenty of iputs to give you and the tuner the answers to all your questions.
98tadriver
01-20-2007, 03:26 PM
good idea, i totally forgot that its a OBD2 i thought it was still a OBD1! lol
foff667
01-21-2007, 06:20 PM
yeah you should be able to scan generic parameters with your version of hpt.
98tadriver
01-21-2007, 06:49 PM
yeah you should be able to scan generic parameters with your version of hpt.

oh sweet, i did not know. but i would have to license that car though, right?
foff667
01-22-2007, 06:50 AM
but i would have to license that car though, right?

no, scanning is a free add-on.
98tadriver
01-22-2007, 04:35 PM
so i just plug it in, then go to vcm scanner and i can scan it?
foff667
01-22-2007, 06:20 PM
yup
98tadriver
01-22-2007, 11:34 PM
awesome!
CALL911
03-01-2007, 03:21 PM
Did it work for you? Brian at PCM's for less is an outstanding tuner (the best for LT1's IMO). If for any reason his tune is off, like posted above, I'm sure he'll retune it for free.

More than likely his tune is accurate, and somethings up with the car. The scan will help track it down, but sounds like a bad MAF to me.
98tadriver
03-04-2007, 02:38 PM
yep it was a bad MAF lol!
CALL911
03-04-2007, 02:45 PM
yep it was a bad MAF lol!

Glad you got it taken care of :mrgreen: