B3647 Question??

[5.7ute]

You need to change B3647 to NOT 1.0 EQ (14.63:1 AFR) as this put the fuel system into Semi-Open Loop and trimming will occur with the O2's. With it set like this if you added 2% to the VE you should see the trims increase by -2 for example.

Set the non enriched portions of the B3647 table to something like 0.995117 EQ (equates to 14.7:1 AFR) anf then d the AutoVE.

Once done you can go Semi-Open Loop if you wish. I run full Open Loop all the time BTW.

Thanks for the quick reply.

[ViolatorTA]

OK...Rather than start yet another OS5 question post I'll put this right along this one since it still has to do with B3647. Here goes......

I set B3647 to 14.7(all cells), B3601 is set to 14.63 as per AutoVE, B3801 disabled, B3803 is set to 140C, B4205 is 122C(all cells), DFCO is off and I set B3807 to 14.7. I'm still getting 14.63 commanded at idle and low RPM/MAP cells. I did take notice to B4108 is enabled and when I log STFT's they are updating in these regions. Should I set B4108 to disable or does any of this matter. When I log and update VE idle reads lean on the WB no matter how many adjustments are made.


Thanks in advance
Shawn

[Tordne]

Send tune to andrew at holdencrazy dot com if you don't mind and I'll take a look...

[ViolatorTA]

On its way and thank you.

BTW, It's cammed with a 231/237 TSP, LS6 intake, Ported TB, smooth bellows, TSP lid, Absolute Speed Stage II 5.3 heads, Jet-Hot longtubes, off road Y-Pipe(no CATS) and descreened MAF(disconnected).

[Tordne]

Tune coming back... I'm out for a couple of hours. Let me know how it goes.

[ViolatorTA]

Will do.

[5.7ute]

I have done auto VE numerous times & still cant get them to remain close. I think this is due to the iat VE multiplier as the intake temperature here can vary up to 25 deg c on a drive. Is there any way I can dial in the iat VE multiplier to correct this problem or should I set this to 1.0 ?

[kbracing96]

Use these number in A0014 and it will stay much more accurate Thats what I use
0.911377
0.922607
0.934082
0.946289
0.958984
0.972168
0.985596
1.000000
1.014892
1.030517
1.046875
1.063965
1.081787
1.100830
1.120849
1.141846
1.164307
1.187988
1.213135

[Big Kahuna]

Will do.

And what was the result, and the changes??
Resolved?