2003-04 Mach 1 Registry Owners Club - View Single Post - Thread for those of us who tune our own cars

Mach828 · 02-25-2015, 05:21 PM

Idle is perfect. Looks like low timing, adjusting the IAC through the tune, and dashpot decay was the trick. I also needed to adjust the idle adder for startup as it was only set for 1 second, making it want to stall on startup trying to drop to 700rpms immediately after crank.

Need to replace a bad front o2, do some mild tweaking of the MTF, and it will be WOT tuning time! Can't wait to see how it runs with my timing ideas to help low-mid rpm power. Then it will be e85 time! I have a free hour of dyno time at my old tuners shop, so I'm going to show up and get it dyno'd on e85 and surprise him that I tuned it myself. Maybe do a little tune tweaking on the dyno as well.

02-25-2015, 05:21 PM	#76
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Re: Thread for those of us who tune our own cars Idle is perfect. Looks like low timing, adjusting the IAC through the tune, and dashpot decay was the trick. I also needed to adjust the idle adder for startup as it was only set for 1 second, making it want to stall on startup trying to drop to 700rpms immediately after crank. Need to replace a bad front o2, do some mild tweaking of the MTF, and it will be WOT tuning time! Can't wait to see how it runs with my timing ideas to help low-mid rpm power. Then it will be e85 time! I have a free hour of dyno time at my old tuners shop, so I'm going to show up and get it dyno'd on e85 and surprise him that I tuned it myself. Maybe do a little tune tweaking on the dyno as well. __________________ Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage