Hi guys
Still stuggling with this 383 LT1 tune.

Tune was CLSD
Car drives fine once rolling, idle is good & stable until CL then it leans out. Of idle the car surges and runs lean upto around 20 mph. VE tables were set with Narrowband data.

I've tried playing with OL idle (PE) settings. The car idles much better when warm. It drives better from stopped but left clouds of smoke behind with it moderate throttle ( very rich).

I've just tried OLSD which again idled much better when warm but the wideband showed lean everywhere once rolling. I increased the VE tables by 7% across the board. Idle is rich and i'm still going lean off idle.
Feed back from here is that O2 sensors lie and widebands lie at low flow levels.

Where do i go from here... Use the wideband values to set VE tables or narrowband bacause i feel i'm going around in circles.


Weather is cold & wet and i'm getting miserable with the car as i can't drive it where it wants to be happy.


Poke me in the right direction please.

Thanks
Mitch