i notice i am seeing 10.8/1 for AE with WB running. that is the as rich as i can see. then it times out and appears to hit 13.0/1 for PE. i believe the AE is overly rich and the PE is a bit lean. Last week i was richer so i took out 20?% value in AE. on prior cam/manifold/ TB i saw 12.8/1 for PE consistently as commanded in bin. on hard WOT accelleration up to about 4500 rpms i get the above result. never attempted higher rpms or sustained WOT as i have lean fueling concerns. is possibly the lean PE a result of air temps being cold this november as opposed to end Sept when i ran prior set up and logged WB? is the healthy cam leaning out PE? i was globally lean on blms after the engine mods so enrichened the VE after winaldl logs. i will command 12.5/1 for PE and try that. also will look at my BPW and double check it as well since i am running 13 lbs FP as opposed to 11 with prior set up.
COMMENTS?

 

Second week in Oct is when they switch to winter fuel. So on a warm day with winter fuel, the AFRs might be off some.

Might try dropping the PE, TPS enable, and get rid of as much AE as you can. The AE can really mess with what your seeing at times.

Engine changes change the VEs thoughout the rpm range, so yes, with those changes, you can need to make some serious changes. Serious being relative to the degree of changes made.

 

Thanks. PE enable is 50% at TPS. i should have mentioned that. i think originally the bin had at 70-75%. somewhere it was said that the newer cars use less AE? i will continue to drop AE values. cept below comment. does 50% tps invoke PE sound about right?
Also somewhat unrelated. if i blip engine while in neutral it goes way lean. i see little visual evidence of any pumpshot at inj. unlike a carbed car where PS is more obvious. is this a TBI/EFI thing? engine feels like it could use more at lower TPS % yet seems to drive OK at normal use/speeds. i used what i thought was a "stock" 350 bin and keeping the proportionality the same when i increase or decrease the AE for tps and map. maybe i up the tps/ae only at lower %(not map)and see how it responds(likes it). i think this is fine tuning. car responded well to mods overall.

 

The OBII cars don't even have AE. On the 96+ F bodies, they run on MAP, and then in PE switch to MAF. They also use very low PE enables.

On my car, I use high 20s with one ecm, and 33% TPS in the other. The one using 33% TPS also has a MAP based enable for PE (which works slick, IMO).

A throttle blip in neutral isn't enough to load the engine (typically( to enable any AE.

The higher K/Pa values at low RPM, are more critical then you might think. Especially if you go for the low AE useage.

 

That nuetral blip lean bit can also sometimes be explained by a low AE multiplier at low RPMs. That caught me off guard on a 7747 and 7427. My friend would mash the throttle from idle and get an intake backfire, and we kept adding more AE PW, but had to add like 300%, then realized the 800 RPM multiplier of like 50% or so. Richening the VE also helped (at low RPM, high MAP).