Stoich AFR Table from 06
 

Anybody got any idea why the 06 Stoich AFR table is so much different on a 06 5.3 I have a copy of the table below anybody know why it is different than all the other AFR tables I have seen in other tunes.


14.68100 14.32168 13.97952 13.60797 13.25566 12.92114 12.56442 12.19048 11.83815 11.47339 11.13043 10.77895 10.42239 10.06388 9.70616 9.35160 9.00220

those tables are actuall for flex fuel compatibility. Why they are listed in non-flex fuel vehicles i don't know.

I checked my VIN and the 8th didgit is a T. Is that not for non-flex fuel. Would you change it to match the regular tables to 14.681 stoich all the way across.

no, just leave it like that. if the fuel module doesn't sense E85 in the tank it'll never go to that mode anyway.

If its not a flexfuel vehicle anyway it doesnt even have a fuel composition module. So it makes that possibility even more remote hehe.

I thought all 2006 5.3's are flex fuel.

The Z motor for '06 is flex fuel compatible, the T is not.

I'm pretty sure what 5.3L you get depends more on geographics than anything. Midwest sales will probably all have E85 engines, while northeast sales dont. Its all gotta do with the availability of E85. (for me living in Central PA, the closest E85 station is in Ohio somewhere... lol)