car is in the sig

recently replaced both 02 sensors

no SES codes showing.

if i drive the car and shut it off, then start it up soon afterwards (say a few minutes) occasionally it will shudder and almost stall out when i go to pull out in gear. the rpms just drop. i wanna say it's missing, but it doesn't really feel like it is. it's hard to tell if it's doing it at idle since it surges at idle with the big cam (and mediocre tuning).

it's done it a few times, but not sure if it is every time.

seems like when i notice it, i usually have to rev it a few times and it seems to correct itself.
not sure if i let it idle longer before pulling out sometimes which prevents it, or if it's just intermitent.

could it be flooding slightly and taking a minute to burn off after the quick restart?

something involved with the sensors since it's still warmed up fully and it's throwing off the a/f right after start up?

it doesn't happen on a cold or semi-cold startup though. or at least it doesn't seem to...since i usually let it idle for a good minute on cold starts.

i'm wondering if its just due to the way i start it and drive it after 10sec in these situations. i'll have to go TRY to induce it one of these days, see if it happens after a minute of idle even on a warm start.

any insight??

 

Probably tune related.

 

what aspect of the tune??

altough i am pretty sure the part throttle tune is not very good. after i do heads i'll have a GOOD tune done, hopefully take care of that and the cam surge at 1500rpm