PE - Enable vs Tps

[hammertime371]

So I was looking at things that are different between my original bin and the 1 mark has tuned for me. I see the pe-enable vs tps on the stock bin is not the same as the tuned bin. Can someone explain what this setting does? 7747 ecm $42 tbi

[EagleMark]

Power Enrichement, same as a power valve on a carb, it add's fuel to change AFR from 14.7 to 1 to desired AFR using BLM reading before entering. There is also a seperate table for the spark and AFR as well as TPS% when it enters.

[hammertime371]

ok so is sa-pe spark added the other table you are talking about? so why is the added spark table all the same at 3.16? why not more progressive.
as far as pe-enable what would be a tuning strategy? how would i know whats to much or not enough?

[EagleMark]

I think I set yours up at 50% so at 50% throttle it enters PE. Reason spark is all the same is because I'm not there... and your logs showed no knock that way!

If your going to start playing with PE spark, which you really don't need on a tow rig plow truck, then understand a couple other SA paremeters:
1. SA - Max RPM for Spark Slope(strts 3600)
" Max RPM used in the spark slope calculation. This is
maximum value at which additional slope spark will
be calculated to. Once this value is reached (you
have it floored, right)?, the slope increase will
be held at this value."
2. SA - Spark Slope-Deg/1K Rpm
"Slope in degrees per 1K rpm. This is the rate that
additional SA will be added."

See there is already spark advance being added without PE just because or RPM... there's no way to reach these RPM without being in PE.

[hammertime371]

since your not here and i intend to tune another tbi engine i need to learn more about how you did what ya did! so the current truck is all i can test on for now. not all parameters in tunerpro have a definition explaining them. since the ve tables are good the next things to mess with is ae and sa. also id like to squeeze out as much milage as i can ya know. how much ae is to much?

[EagleMark]

AE Aceleration Enrichment is your accelerator pump. If you have no bog (to much = rich) or pop (to little = lean) it is fine, to much can really throw a rich AFR at O2 sensor and mess things up. Usually AE is fine after VE tables are set, unless you have a lumpy cam then AE needs lots of work. If you have no drivability issues leave it alone, it's hard to get right without WideBand O2 sensor...

PE spark is like all spark, once you find knock then back out at least 2 degrees till it's gone.