I've got the canned 87 octane tune running (Some noticeable improvements). When I watch videos on youtube of folks doing 0-60 in their HEMIs I notice the RPMs go way past where mine go. I think I've seen mine at max around 3k RPMs... What are the pros and cons of messing with this in the tuner and can it damage my truck messing with shift points? I also would like to try the 93 octane tune... Is it safe to put 93 octane in the HEMI?

 

You cannot do anything to damage the truck with the tuner. 93 octane is fine. mine is custom tuned for 93.

 

I used the diablo tune a couple of times in mine. It was ok. I have it on the 87 tune right now. Nothing done to the transmission though For some reason it won't tune mine. Says something like tcm error, I can't remember its been awhile. I haven't had time to mess with it to much after that. When summer is over I'll have more time.