HwyCruiser
07-14-2006, 09:47 PM
I took the day off and made the 200 mile trip down to Springfield to visit Dave at Injected Racing, Greg's Diablo tuner, to do some tweaking on the shift and torque converter lockup schedules. I don't know if it was more the 5% increase in rpms vs. mph due to the 4.10 to 4.30 swap this spring during my axle/diff upgrade or if I just felt the need to do some fiddling, but oh boy she was a lot more fun to drive on the trip back.
Thanks goes out to John (TooManyFords) for sharing the shift schedule he customized to his FIT Procharger kit with 4.30s with his SCT ProRacer software. Initially I didn't have the intention of totally overhauling the Diablo shift schedules, but since John volunteered his experience with dialing in the same basic setup I was going in with I went for the gusto. John's input of what I can imagine was several hours of road-tuning his Marauder saved us a lot of time and guessing. Thanks buddy!
If you put my schedules next to John's there is probably only 6 or so points under wide-open throttle that are different, and not by much. Dave and I tweaked and road tested the new shifting schedules a couple of times. I also had him make one adjustment to the 3rd gear torque converter lockup at moderate throttle that made a world of difference with the Stallion tc IMO. We finished up by making some minor adjustments to my timing tables for a 91 octane gas tune that still kicked butt in the 100 degree heat.
During the 200 mile trip back I took notes on a few very minor additional tweaks that I'll sent off for an email update, but my 9 hour round trip and $100 for the in-car tuning time was well worth it. The shifts are much more aggressive when in the throttle but still maintain there street manners. 2nd gear hangs in there up the on-ramp without having spool up full boost. Overall the pedal feels much lighter now. Overdrive is still available during street cruising above 38 mph, but it doesn't take much to downshift into 3rd so it's more or less for those Geritol moments.
Just before I left I told Dave to be expecting some phone calls. Use your tuning privileges my FIT brothers. I bet you'll feel some pretty nice changes in this update!
Thanks goes out to John (TooManyFords) for sharing the shift schedule he customized to his FIT Procharger kit with 4.30s with his SCT ProRacer software. Initially I didn't have the intention of totally overhauling the Diablo shift schedules, but since John volunteered his experience with dialing in the same basic setup I was going in with I went for the gusto. John's input of what I can imagine was several hours of road-tuning his Marauder saved us a lot of time and guessing. Thanks buddy!
If you put my schedules next to John's there is probably only 6 or so points under wide-open throttle that are different, and not by much. Dave and I tweaked and road tested the new shifting schedules a couple of times. I also had him make one adjustment to the 3rd gear torque converter lockup at moderate throttle that made a world of difference with the Stallion tc IMO. We finished up by making some minor adjustments to my timing tables for a 91 octane gas tune that still kicked butt in the 100 degree heat.
During the 200 mile trip back I took notes on a few very minor additional tweaks that I'll sent off for an email update, but my 9 hour round trip and $100 for the in-car tuning time was well worth it. The shifts are much more aggressive when in the throttle but still maintain there street manners. 2nd gear hangs in there up the on-ramp without having spool up full boost. Overall the pedal feels much lighter now. Overdrive is still available during street cruising above 38 mph, but it doesn't take much to downshift into 3rd so it's more or less for those Geritol moments.
Just before I left I told Dave to be expecting some phone calls. Use your tuning privileges my FIT brothers. I bet you'll feel some pretty nice changes in this update!