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

Mach828 · 02-27-2015, 09:35 AM

What does re-scaling the tune mean? I read about it a little in the tuning guide but still don't fully understand it. How soon do you guys hit the 63#/min air flow cap in the MTF? My projection hits it at ~800 MAF counts so my remaining points just flat line. Pretty amazing how much more air flow the car sees with boost and how quickly load increases.

The BP Modifier method seems to be the preferred method? So you double the BP modifier values manually, then cut the MTF in half, and then? Just retune the MAF and you are good to go? This seems like the best way to go.

Well seems like the BP modifier method works. I'm going to need to adjust the points on the MTF to have more even gaps between data points because now my low end is more sensitive to minor adjustments. But once I get it dialed in this should fix any WOT worries.

Boost is about 9lbs, once it warms up it will drop to 7ish.

02-27-2015, 09:35 AM	#78
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Re: Thread for those of us who tune our own cars What does re-scaling the tune mean? I read about it a little in the tuning guide but still don't fully understand it. How soon do you guys hit the 63#/min air flow cap in the MTF? My projection hits it at ~800 MAF counts so my remaining points just flat line. Pretty amazing how much more air flow the car sees with boost and how quickly load increases. The BP Modifier method seems to be the preferred method? So you double the BP modifier values manually, then cut the MTF in half, and then? Just retune the MAF and you are good to go? This seems like the best way to go. Well seems like the BP modifier method works. I'm going to need to adjust the points on the MTF to have more even gaps between data points because now my low end is more sensitive to minor adjustments. But once I get it dialed in this should fix any WOT worries. Boost is about 9lbs, once it warms up it will drop to 7ish. __________________ 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 Last edited by Mach828; 02-27-2015 at 03:40 PM.