Here is my current tune I am running every day. I haven't added max timing for this tune to keep my fuel mileage up, so there is more in it... I get 18mpgs on 37's and the throttle response is smooth. Drive pressures are 1.18 to 1. EGT's will get to 1750 with stock turbos but the 6.4 is made to take it. I figure this is a 300+ tune. Rail pressure stays in the mid 20's at WOT.