So far i've accomplished getting the WOT AFR correct. It was 11.6 across the board on a stock APYU bin. I've played with AFR Tuner and got the AFR to 12.8-13.0 across the board.
I have not touched the MAF tables yet.

My problem now is AE which I can not get right if my life depended on it!
It's a weird problem.

Off idle hesitation

Mash the gas off idle in neutral;
- Wideband afr spikes down to 10:1, hesitates for a split second then rev's up. The afr doesnt spike lean during this.

Mash the gas off idle in gear;
- Wideband afr spike down to 11:1, hesitates for a split recond, then spikes lean (16:1) then evens out to 12.8 all in less then 1 second. Massive knock counts through first gear because of this(100+). Knock counts go away once second gear hits.
- I will get zero knock counts if I put the gas down at a rate which doesnt invoke AE.

Cruising down/Rpms over idle

Holding 2000rpm in first or any gear/rpm without invoking downshift -> wot
-There is no hesitation
-It doesn't spike rich.
-It spikes lean to 16:1-17:1
-Massive knock counts through the gear, knock counts go away once it shifts.
-I will get zero knock counts if I put the gas down at a rate which doesnt invoke AE.
-I have added TONS to Acceleration Enrichment Factor vs Change in LV8. I have added nearly 4 times the amount across the board and it hasn't help.
-I've tried the AE tables from the Stealth Ram thread and it makes the off idle stumble worse.

Long post, I know.
Any help would be great..

 

Try lessening the 10-1.

Too much fuel can make things bog almost as bad as too lean can.

For the rich to lean spike, try adding a slight amount of AE fuel before/at the lean occurence. Also add time to the actual AE duration.

Also for both situations, sometimes less timing can be beneficial, or just rolling down the timing a little bit faster can as well. Try working both back and forth

later
Jeremy

 

I'll try that out. The thing I dont get is that i'm getting a rich spike on the stock AE tables with a Stealth Ram plenum which is huge.. doesnt really add up.

I also don't make sense of the Acceleration Enrichment Factor vs Change in LV8 table.
How do you know which value in that table is going to be used? Is the change in lv8 factor decided in X amount of time?

Thanks..

 

Plenum isnt the only factor to consdier when runing into AE issues.

How much and how quick is more dependent on the actual air ingestion of the engine(which plenum size figures into)

Stock tables no longer mean anything :-)

AE vs change LV8 would be the factor of AE injected vs the actual load on the engine.

Somewhere, might want to check some other XDF files and there should be one for duration, as in length/time of pulsewidth/injection.

later
Jeremy

 

I've made a little bit of progress. I pretty much cut the AE factor vs. change in lv8 table in half. I also did the same to the AE %bpw factor vs. async pulse. I also changed the decay rate to make the AE last longer.

Changes:

Off idle
Mash the gas off idle in neutral;
- Wideband spikes to 16:1 then down to 12:1
- No longer hesitates

Mash the gas off idle in gear;
- Spikes to 16:1 then tappers off the the PE value

Cruising down/Rpms over idle
Holding 2000rpm in first or any gear/rpm without invoking downshift -> wot
- AFR Spikes just like it did before
- Noted no change at all

Looks like I went a bit too far and instead of cutting the table in half I'll cut them by 25% and note the change.

I'm still not 100% sure what part of these two tables (if either) control "Holding 2000rpm in first or any gear/rpm without invoking downshift to WOT"