Specific changes

[billfromislip]

Is there a list of the specific parameters that the 91 octane and the diablotune tune packages change in the PCM? I was curious if there is a difference other than the ignition timing between the two tunes and what else they each are changing from the stock tune. I've had both installed and they feel different from each other and I can't imagine that the ignition timing is the only difference.

[mikel]

the only difference from 91 to 93 tune is commanded timing at WOT...

[Eric10]

I can tell the fans comes on at a lower temp now and runs all the time on the 93 tune. So what tempure is it set to come on at with the 91 or 93 octane?

[Eric10]

plus you list more gas mileage. Just WOT would not give you better mileage. 15 mpg to 13mpg , is this false advertising them. Just my fan running at lower temps tells that is different too.

[mikel]

Im not sure what you mean.
Mileage from the 91 to 93 tune will not vary...