Quote:
Originally Posted by JackandJanet
It IS strange. I've never even tried the 93 octane tune though. Since the engine is really a low-compression engine, it seemed to me like I'd just be wasting money putting the anti-knock juice in it. 
Somewhere, back when I got this truck in 2007, I read quite a number of reports of it being very hard to keep an imbalance vibration out of these trucks. I think there's something a bit flaky in the suspension.
Bill may have some thoughts about the 93 octane tune and your symptoms though if you really wanted to use it. Glad you like your custom 87 octane tunes though. I really don't see the need for more than two tunes actually, one for towing and one when I'm not. AND, if I'm off on a trip with the trailer, I just leave the tow tune on all the time. The last thing I want to have is a programming failure in the middle of nowhere. 
- Jack |
Jack, your right about the high octane not being the greatest. My 87 performance with 87 in the tank beats the 93 canned perf. with 93 in the tank every time. I'm sure Bill could make a custom 93 work even better but I dont need another tune, especially one that will probably cost more for me in the long run. Almost wish I had put my custom in the level 3 position instead of the level 1.
My suspension also gets shaky when I get on a road that is not perfectly smooth. Some are worse than others.