Same situation. Working with lund on my Rev4 now. Rev3 felt better but said I needed a little more fuel. Below 3500 it struggles a bit, above 3500 pulls like a freight train.Not a good feel for it yet, will be able to tell more once the tune is squared away. But I can say it pulls like mad over 4K.
No updates. Been out of town since Sunday, just got home. Apparently my data file for Rev 4 errored out on my end , so Lund didn't get my file. Resent just a little while ago.Any updates? Get the tune dialed in yet?
Understand that. Was just stating to show that it looks like there is more on the table with the tune.negative knock means it's adding timing