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i have looked at the 0411 swap but didnt think i needed it.
maybe i do now. its a cheap swap but labor intensive.

thanks for the help

stock and current

3250

3251

i have tried initial fuel prime with minimal results but it did help to lean the prime. also played with timing tables and fine tune timing. and airflow was adjusted as well
my idle goes like this...

how can i adjust start up airflow decay?

i have problems with idle, and some ocasional backfires.
on a cammed 98 suburban k1500 5.7 vortec.

3083

the data log

idle to 70 back to idle

check out the idle. on this
can anyone shed some lite on how to adjust the spark tables to improve my idle?
any thing?

fuel pressure is good, im gonna try adjusting the timing tables, anyone know how much timing to correct for 50rpm drop and increase?

well leaning it out helped a little, at least it will start on its own now.
still a little rough though.
also raised the idle about 75 rpm, no more surging.

also i got logged data of my burb can you see anything that needs adjustment?

well it does it when hot and cold. idle smothes out after about ten seconds give or take. somethimes it will idle good, and some time it wont idle unless i step on the accelerator. i just tried to...

i have a cam and, i know there is no intake leaks, all new gaskets and still doing it.
the long story is i had this rough idle since the first cam i put in,
this is the second cam and it is still...

downloading now thanks again

i have v7.4

thanks guys but i still cant find the file GM.CMPRET in my pid list

how do i check my timing?
i know i need to be +or- 3 degrees, but how do i check it?