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[SHO NUT]

Great, thank you Adam and shonut, hopefully it can solve a lean tip-in issue, honestly, I have my doubts, I think heavily modified cars might have to run in forced open loop all the time but hopefully I'm wrong.

Maybe someone has had a similar issue and can share some thoughts, this usually happens when you do a fast push on the accelerator almost like stomping on it, car goes lean and loses power, worse when its cold, better on warm starts but with a gradual push on the accelerator it's fine then as loads go over 100% where it goes into open loop and your tables take over.

I have messed with the accelerator pump function but hasn't helped much.

There are a few accelerator settings. It's possible to be able to get it too rich, so it's a matter of finding balance.

 

[shomethe$$$]

What do your CL tables look like for your setup? Either program should be able to address this issue.

I just paid for these files and will be hooking up a Quarterhorse to test and compare against the TwEECer.

I don't know, which table exactly? I've only adjusted the fuel enrichment table as shonut suggested. What I'm looking is a function that ignores or delay's 02 feedback for a certain amount of time during acceleration, say 1/2 second, so the A/F ratio doesn't go lean. I do see the HEGO delay tables but no one suggested touching them so I've left those alone.

Alternatively from what I know a SC Tbird goes into open loop during hard accelerations but they also tend to blow head gaskets regularly.

 

[SHO NUT]

I don't know, which table exactly? I've only adjusted the fuel enrichment table as shonut suggested. What I'm looking is a function that ignores or delay's 02 feedback for a certain amount of time during acceleration, say 1/2 second, so the A/F ratio doesn't go lean. I do see the HEGO delay tables but no one suggested touching them so I've left those alone.

Alternatively from what I know a SC Tbird goes into open loop during hard accelerations but they also tend to blow head gaskets regularly.

Have you set 'Fuel - Open Loop High Load Minimum Timer' to 0?
What is the 'Fuel - Stabilized' table AFR set to for the load and RPM at which you finish putting the throttle down?
Have you played with 'Fuel - Global Accel Pump Multiplier'?
There's also a Accel Function.