STFTs very rich after Custom OS tutorial

[mtnman]

I've installed the custom OS #3 for 2003 and followed the OS tutorial.

Went for a drive and my STFTs are very rich. Numbers are :
Min Avg Max
SHRTFT1 -24.2 -20.1 7.8
SHRTFT2 -24.2 -20.3 7.0

What table do I need to adjust to get these values down?

I have not adjusted b4101, b4102 b4103 b4104 b4108 from their stock values.

b4205 - set to max setting (as instructed in the tutorial)
b3801 - disabled (as instructed in the tutorial)
A0008 - all set to 1.00

[ringram]

When you scale the VE it makes it go rich.
You should really use a wideband.

But you can log ltft+stft and convert to a factor of 1 so you can multiply it to your ve table. If you do a search you will see formula and maybe some maps to do this.

[mtnman]

I'm not sure what you mean here. Replace the stock OEM exhaust sensors with wideband sensors?

[ringram]

Well to tune properly you need to go into open loop speed density, tune the ve table, then reenable the maf tune that, then go closed loop and turn back on dfco, cats etc. (The autotune tutorial will talk you though most of this)

It helps if you have a wideband as its far more accurate and easier to use than trying to use the stock sensors.

[mtnman]

I've already performed the AutoTune with the stock OS, using a PLX. But I have not reenabled the MAF and tuned it. My current tune is Closed Loop SD. Cats are still off.

[GMPX]

PM me and I'll take a look at your file for you, just in case you missed something.

Cheers,
Ross

[mtnman]

PMed you and emailed the tunes.