Hashish

iTrader: (1)

So my car still isn't running like it should. I took this video to see if anyone can listen to the way the exhaust sounds and help diagnose what the issue is. Just some background on the car/motor: Bored .020" over, heads decked .010". 2001 pcm with '98 cam. TSP 1 7/8" longtube headers with 2.5" ory and 3" slp loudmouth exhaust. I have already checked and double check both my cam timing and my intake manifold and check extensively for vacuum leaks. When I start the car when the motor is cold it starts and stays idled very well, just sounds camed. When I start the car when the motor is warm it starts, then rpms drop below idle and the motor either stalls or comes close, it does that for a few seconds and if I tap the gas a little bit to keep it idled and do that for a few seconds it will idle. While driving once the motor is up to operating temp it will occasionally try to stall when I put in the clutch. Sometimes after I start it when its warm and start driving the car hesitates and stutters with light throttle and then just wakes up with slightly more throttle, but then acts normal a few seconds later and doesn't reoccur. On the other side it seems to run well under load and WOT. Here is the exhaust clip. Please help!

http://www.youtube.com/watch?v=G5zkW7GNRTs

mvvette97

iTrader: (18)

to fix the hot start problem you need to add some airflow in the temp areas that the problem happens. Like in the 160-230 degree range. Do you have any tuning software? If you have EFI Live I can fix the problem for you.

Hashish

iTrader: (1)

I don't have any tuning software. So do you think a tune will fix my problem?

mvvette97

iTrader: (18)

so are you running untuned then? If you already have a tune then it'sa bad one. If you get it tuned it will be fine if the tuner knows what he is doing

Hashish

iTrader: (1)

Yea there is no tune right now

Sid447

You've basically gone outside,

The parameters that a stock tune is calibrated for with your engine changes.
You need a re-tune as ''mvvette97" has already mentioned.

Hashish

iTrader: (1)

Ok thats what I thought but I had one guy tell me different so I was just trying to get a couple of different opinions. Thanks