What should AE AFR’s be?

[notime2d8]

If I am wrong what do i adjust to make the car accelerate faster after the throttle stab? what should the wide band say as the car is gaining speed...lets say at half throttle?

This should be your timing first, then PE timing, and then your PE AFR. Do you have a backfire or sluggishness when you floor it? If not you should move to PE and Timing. Also making sure your trans is adjusted right if you have a th350 or 700r4.

And it depends on your PE settings but if you're flooring it, your wideband should match your PE AFR.

[BigBanks78]

Ok so the AE rpm is just the the first shot of fuel at specified rpm? I do see high 11 low 12 sometimes when i press the throttle but the AE tps is almost at the bottom or zero. Whether thats from AE i dont know, wide band is pretty close to the head probably 8-10 inches in a cross tube where the 4-2-1 header goes from 4 to 2, if that matters. i have the PE set at 87% throttle, PE spark at .70. I have sluggishness mostly if i stab throttle (rarely to 100%) trying to speed up in traffic, really sluggish if im getting on highway behind someone slow and try to pass them after getting on the highway. Light throttle seems ok and if I get a clear on ramp where I can run the rpms up in each gear (5speed manual) it pulls pretty good but if i have to get out of throttle at anytime and get back into it its BLAH! No backfires tho. I have messed with timing 100kpa 4000rpm- 7000 redline and its at a place where if i advance it looses power and lower timing it looses power. have mostly been playing with stop and go traffic feel lately, advancing timing between 50 and 80 kpa and adjusting fuel accordingly has made biggest difference not ae tho so thats why im asking about AE. But from what u r saying i should b adjusting PE? Trying to tune efi i feel like has made me second guess everything i thought i knew about cars so I hope this make sense!

[notime2d8]

Yeah, I would try removing the PE delays, and then lower when PE comes in...maybe 50-60% or 30 just to see what it does when it comes on. What was PE spark on the stock bin?

[delcowizzid]

Ae is pump shot PE is like the powervalve on a carb richens high load.most of the stock stuff with PE that i tune comes on at 50%throttle unless at high rpm I normally cut it back a lot to 25- 30 odd percent so it comes in earlier at less load

[BigBanks78]

Yeah, I would try removing the PE delays, and then lower when PE comes in...maybe 50-60% or 30 just to see what it does when it comes on. What was PE spark on the stock bin?

Stock was $8B and it had a completely separate spark map for PE but at 100kpa it was about 2 degrees higher in most places if I remember right. I’m not sure what throttle % it came in at but I took it down to.7 trying to figure out the higher rpm timing power weirdness. I have only been making small changes and drive it for a week or so, I will change the PE today, I was going to try lowering the low end 100kpa timing a bit so I’ll move the pe throttle % down to 30 or 40% first. Should I add time pe timing back as well or wait to c what happens with throttle %?

[BigBanks78]

And I’ll look at the delays and remove if not already.

[notime2d8]

And I’ll look at the delays and remove if not already.

Yeah a few bins have a PE delay for some seconds before it allows PE to come in.

Should I add time pe timing back as well or wait to c what happens with throttle %?

I honestly don't know about this one. Some argue both ways. I like to have it to bump timing up a few degrees instantly when i'm accelerating and have lower overall timing in case i get bad gas or something. But others say they don't like anything else adding timing and do all of their timing in the main table and leave it at that.

[BigBanks78]

Ok I couldn’t find the tps% for pe so either I remember wrong or I’m blind but I did a search in tunerpro for pe and changed the delays and lowered some of the kpa %’s at which it turns on and I think it feels better in some places so im gonna see if I can even out the afr, it’s all over the place

[BigBanks78]

Changing PE stuff helped. Had some sluggish spots so lowered timing in 100 kpa in a couple spots and that smoothed it out, this thing is weird with timing, even tho it doesn’t spark knock it doesn’t like timing to high. Maybe I don’t have other things set right. I still have to add some fuel in PE from from 2800-4000 to get it to lower 13’s but after that I think I’m gonna quit bugging you guys till I get the SC installed, I know I’ll have to have help with all the settings then!
Thanks for all the help guys!!