In Tunercat, pump shot table vs. tps, WHERE does the enrich-
ment actually take place in the 0% line? At startup? Some bins
that I've been comparing have 0 as a value, and some have
more. 350's run between 61 and 122, where some 454's have
0 (stock GM bins). I'm trying to solve a slight flooding problem
right after startup, and need to know if the low %tps pump shot
tables might need to be decreased.

Thanks for your help!!
Roger

 

I *think* the 0% TPS is added all the time. That's my guess.

If you have a slight flooding problem after start-up, I would try raising the cranking AFR to lean it out.

 

I've already leaned the cranking afr's and the open loop tables,
and cold driving is very good. The problem only arises once
in a while, and only on a restart at about 40-50 deg.c. and
only if I put it in gear before the idle speed comes down.
I'm really only interested in knowing WHEN the 0%tps pump
shot is actually applied. Does anyone know this? BTW,
we're talking about a '7747 ecm. Mr. P? Glenn?