Trouble With Pfc..

That's perfectly normal if the car was just tuned. The PFC hasn't learned yet how to handle the changes in load. You're supposed to go through the PFC learn idle process and it should be fine. It took my PFC a few runs before it was completely gone.
The only other thing that would cause it to do that if not is a bad tune in the rpm+load region that the PFC goes it when you turn on the fan (hence increasing the load).

As for the turbo timer; you only need one if you run the car hard, pull over and shut down right away. If you run hard, park and let it idle for a min or two, that should be enough to let the oil temp cool down.

Dj_cElicA said:

yeah.. gonna have to get one soon..
tuner was trying to mess with the idle values last night and it seems to go away so we turns the blower off and turn it back on, it starts doing that again so tuner was juss like.. "its strange" and we tried a few more times and finally it wasnt doin it
(i think he was messing with the somethin like voltage for injector and something else first and the idle values later) so i drove it home and i stopped at this one traffic light
it juss started doin it again.. oh and it seems like surging at idle too.. sounds something like there's a restriction on muffler..

Click to expand...

The idle cells are a bitch to get smoothed out. It has taken me a few months between some tuning that Jesse and I have been working on (see the map he posted). It's become extremely stable not to mention the car pulls really hard for N/A. The PFC will still have to go through the learn process but you will get an idle that I must say is even better then stock.
You need to only modify the lower rpm idle cells and the first few load rows. Keep the rest of the map the way the tuner put it. Also, as Jesse suggested, modify the INJ vs. WaterT and INJ vs. AirT with what's on that map. After a few runs the PFC will learn it really well and it should be idling MUCH smoother.