In low rpm 1100-2000 with low load i am having a real bad hesitation giving it throttle and my blms are reading 114~120 sometimes 108 but the int is showing high values 135~160. Is this happening b/c the ecm is trying to pull fuel and the int is showing lean due to the fuel subtraction? Also could my sa not be advanced enough to cause the hesation? Car is a 383 miniram with 30# injectors. Ive noticed if i increase the fp the hesitation isnt as bad but is still noticable. Thanks

 

I would check the calcs in your adl file to make sure the fuel trims are being displayed correctly.
I'd also hook up a wideband to verify what is going on with your AFR, then get the tune closer before proceeding.

A hesitation on tip-in is often from a lack of AE. It's actually pretty common with a 383 or larger. You probably need more acceleration enrichment. If that's the case, then don't add any extra SA until you get the fueling in line.

 

It his being seen at other rpms/loads as well? I never gave it much thought but understanding BLM is long term and INT short term I believe it is possible for that to occur. Aafter INT recognizes need to remove fuel you may see BLM rise accordingly. I think the only way to see BLM rise is for INT to get above 128.
Anyone?

 

AE transition maybe. Giving it more fuel pressure helped which tends to support the fact that it's not getting enough "pump shot" to use a carburetor term.

 

Excessive AE I recall drives up the INT with an increase in BLM(pulling fuel). After the AE event the opposite should occur. Possibly any AE event may cause INT to rise a tad.