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Granted I am refering to a trailblazer 05 i6...
But when i get to the tire / calc tab there is nothing listed..
Now i dont know if that is locked or is going to be added later, cause there are alot...

I remember reading on TrailVoy that HPTuners was in the process for building custom OS's for at least the I6.. Is that still a W.I.P... or is it DOA

Mine doesn't have that option under to engine section..
Am i missing something, or not reading between the lines.


EDIT:Are u meaning the Spark Retard area??

05 with the 3.42 and Posi..

I just got the tuning program..
And all that i can say is wow.
Just removed TM and it is like a different beast.
The shifting seems fluid..

If i was to change the octane tables would i have to...