Need Help

[BRO1]

My wife is 450 miles away from me with my truck a 08 Silverado 5.3L with Diablo 91 tune installed,the problem is she just filled it up 87 octane gas!!!!Can she buy some octane booster from Walmart and put in it and be OK or am I screwed?
What octane booster is the best if it will work?
Thanks

[CANUCKPREDATOR]

tell her to NOT smash the gas, the truck will run, but not at its best.

[06MonteSS]

yeah, just don't go WOT and she'll be fine....

[BRO1]

Thanks! Will Tell Her (HOPE SHE WILL LISTEN)

[seanst]

How do you do WOT logs with u7191?

[06MonteSS]

you need to log these parameters...

air fuel ratio (Equivalence Ratio)
commanded throttle position
engine speed (RPM)
intake air temp
long term fuel trim bank 1
MAF Sensor Mass Airflow
spark advance
total knock spark retard

When doing WOT logs, you would log the same parameters as you did for the steady cruise log. To get a good WOT log, you want to start from a dead stop if you can, or at least from as slow of a roll as possible. Then, just GET ON IT!! Pretend you're on a drag-strip, hammer-down and go for as long as you can, through as many gears as you can. BUT, BE SAFE!! And only do one good WOT run per log - so, after the WOT run and you're coasting down, you either continue cruising until the log is full, or you can press the ESC button on the Predator a few times to get back to the main menu to exit the data logging and it will save the log.