SMOKY

iTrader: (4)

2000 formula with an 6.0, tr228r, 80lbs dekas, boost regulated, china gt45 turbo, 85mm throttle body, ls6 intake. Im running a p59 computer with iac on the firebird and having a startup flare then die. It will idle pretty good if I keep the throttle at around 10% and slowly lower it to 0%. But initial cold start it dies.

JHZ28

iTrader: (3)

startup airflow delay u have all zeros I would put 150 across the whole thing might want to try to open up the throttle blade some also

SMOKY

iTrader: (4)

Tried that not much of a difference. Got the car fired up and idled till fully warmed up. Noticed the IAC counts were almost maxed so I enlarged the throttle body bypass hole in reference to this http://www.silveradoss.com/forums/to...sing-hptuners/. Now she starts pretty well. Needs a few tweeks but ill figure it out the rest of the way. Thanks again.

LilJayV10

iTrader: (39)

i would have opened up the TB blade and did a TPS/IAC reset before I drilled the hole bigger to get the hot IAC counts where they need to be. Then play with the RAF and startup airflow.

SMOKY

iTrader: (4)

Tried that and went to .75v and still was in the 280s hot. Tried lowering ve to use less fuel, added to raf back and forth. She just wanted more air.

ChopperDoc

Idle tuning sucks. Have you watched my guide on tuning the IAC? Give that a try. 90% of it is actually in the throttle blade adjustment, not the IAC. You want the hot counts down in a range from 20-60 or so, could be a little higher or lower, but it gives it room to open when the car is cold.

SMOKY

iTrader: (4)

I actually just watched it and will be using your math to get the IAC adj. I watched both videos actually.