So far.... Nothing but Problems

[Jackpine]

Originally Posted by twintips_17

I did get a custom tow tune at 91. In the past i have been able to puch teh timeing to 2.5 without problems. Either way the point is that the new grypon will only advance it 2.0 in .25 incerments.

So does it advance the same as the manual states? And i only advanced it .5 up and so that would say i was running 88 octane acording to the manual. 91 should more then run on that with no problems?

Im so confused. I had my favorite presets in my ver 4.xx.xx and now they dont go the same into this one. Any custom tune ends up jinxing me even if i jsut mess with tire size

That should have no effect on how the engine runs.... Just shift points right?

Time out! You have a custom 91 octane tow tune? The timing's already advanced! If you were bumping it on top of that, you were way over advanced! If, you've advanced it 0.5 now, you've effectively set your truck up for 92 octane gas. It MAY work ok, but you run the risk of detonation under load.

And, if you're using presets from a previous version, I'd say you're asking for trouble.

Bottom line here - If Bill's given you a custom tune, don't try to out think him unless you know more about tuning than he does!

- Jack

[twintips_17]

Originally Posted by JackandJanet

Time out! You have a custom 91 octane tow tune? The timing's already advanced! If you were bumping it on top of that, you were way over advanced! If, you've advanced it 0.5 now, you've effectively set your truck up for 92 octane gas. It MAY work ok, but you run the risk of detonation under load.

And, if you're using presets from a previous version, I'd say you're asking for trouble.

Bottom line here - If Bill's given you a custom tune, don't try to out think him unless you know more about tuning than he does!

- Jack

Slow down sparky I ordered one from bill. Im still two months out!!!

I was just stating to your above statement, to tell bill if i order one......

I am working stricktly with "canned" tunes... So i should have been fine. I say again it would have been 88 octane.

As far as using presets from a previous version i am running into trouble.I am learning that and I am having to find new ones. But anything i do results in rough running. Like i said i adjusted the tire size and got a bobbing idle.... Wierd????