What am I missing? PCM commanding a .31Eq but I'm commanding .85Eq in PE

[village_idiot]

This one is blowing my mind. Currently I am working on the MAF table. Just finished the OL with PE off part throttle, turned on the PE set at 1.176 but when I blip the throttle to see if PE activates, it commands a .31eq and bogs like hell

2001 Sierra 5.3 RCSB
Stage 3 High Lift Cam
BTR 660 Springs
Trunnion Upgrade
LT Headers to a 3" true dual setup
42lb Gen IV injectors
Holley High Ram and Holley 105 TB

This truck has a stock tq converter, so it is idled a little lower than I would like, but it's how it showed up...working around it

2001 Sierra Stg 3 High Lift and 42lb injectors.hpt2001 Sierra Idle and Revs log.hpl

[village_idiot]

Anybody with any ideas?

[dsmdoctor]

do you have the log so we can see whats going on? you could try to stair step your PE table. you have it set for the entire rpm range. try having it gradually getting to the desired PE value. have you set your pe and then tried tuning your VE, then tuning the maf?

[TheMechanic]

What is going on with the open circuit B2S1?

[blindsquirrel]

Might want to take another look at Power Enrich - IAT Adder and Open Loop/Base - PN/Drive Enrichment - Initial Adder vs ECT. Those should be close to or equal to zero, not 1.00.

screenshot.22-04-2022 14.24.22.png

What is going on with the open circuit B2S1?

Forced open loop, guessing wideband installed in place of B2S1.

[blindsquirrel]

Just a quick note...

Setting to 1.0 disables a multiplier table. Setting to 0.0 disables an adder table.

[village_idiot]

Squirrel you probably found it there then. I figured anything times 1 is itself.

Yes, the WB is in B2S1

[village_idiot]

Problem solved, and just confirmed.

In the ECM 12402 Power Enrich Fuel IAT Adder Table... Setting the table to 1's will cause extremely wacky stuff. Set to 0, now it will command a .85 when you go WOT on the pedal

[blindsquirrel]

But those tables add, not multiply. Those two (and maybe more, you need to re-check anything you fiddled with closely) are set up as if they were multiplier tables you wanted to turn off.

[blindsquirrel]

Problem solved, and just confirmed.

In the ECM 12402 Power Enrich Fuel IAT Adder Table... Setting the table to 1's will cause extremely wacky stuff. Set to 0, now it will command a .85 when you go WOT on the pedal

Cool