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GOODIE454
March 20th, 2011, 02:19 AM
can someone look at my tune. i think it is running rich it was set up to run speed density the motor is a 2003 6.0 its drive by wire with a Texas speed 220/220 cam .581 .581 lift. running a th400 trans. im new at this tuning stuff and this is one that was written for me by a local shop just want to make sure it all looks good. truck runs good, plenty of power just smells a little rich to me.

10154

WeathermanShawn
March 20th, 2011, 03:06 AM
GOODIE454, welcome to the Forum:

That Tune you posted is not a SD Tune. It is a MAF-enabled, closed-loop tune.

Therefore, you should be running stoich (~14.7 AFR)..

Chevy366
March 20th, 2011, 04:57 AM
If you are running the ORY and headers without CATs it will smell a little rich , be aware without CATs it can be lean and smell rich .

Sid447
March 20th, 2011, 09:00 PM
GOODIE454, welcome to the Forum:
That Tune you posted is not a SD Tune. It is a MAF-enabled, closed-loop tune.
Therefore, you should be running stoich (~14.7 AFR)..

If I'm not mistaken,

you might find that if the vehicle has the maf-sensor physically removed it will be in SD, has LTFT disabled, but is not fully OL.

HSV had their stock GTS single-spark SDCL tunes set up with the Maf Table like this (by NOT altering the maf frequency fail tables C2901,2 or 3 at all) this way you can choose to connect and run "maffed" at will).

Very strange B3605! :)

Yes you will be running rich, because of the way the tune is set-up.

WeathermanShawn
March 20th, 2011, 11:43 PM
Sid, I disagree.

He is running MAF-Enabled closed-loop.