No, Mr. Lemmywinks, No!!!
Join Date: Jun 2005
Location: Harriman, TN
The 0 setting is whatever Don put in the tune; you can adjust EDIT:"Lower" than, LESS "Before Top Dead Center" than whatever advance he set.
You should be able to read the actual setting by datalogging it.
Firing at or past TDC is not something you want to do; it pretty much fires into an open exhaust valve.
You want to find the sweet spot on the fuel first, then do the timing. Then rinse and repeat.
Watch the fuel trims in the datalog; if you're not datalogging, or don't have a wideband, you're just guessing. (LTFT, STFT)
The Butt Dyno Lies, lol.
Red '96 Cougar XR-7 240k mi. '02 4R70W, PST DS : '03 PI engine, 04 maf, 24lb injectors, 2.5" exhaust, '02 4r70w + Jmod, DirtyD0g TC + cooler + 3/8" lines, 255 walbro fp. Alpine system.
Black '96 Cougar XR-7 (Lazarus) 210k mi PI Intake, '02 4R70W, Jmod, PST DS, GrogTune, Konis, Mark LCA+Poly, racecougar Custom Engine Chain, and JL and racecougar Bracing.
Black '97 Tbird Limited Edition, '02 4R70W, 255 walbro, PST DS, PBR Brakes&SS lines, Toicko Blues & Springs, GrogTune.
"War Is Peace. Freedom Is Slavery. Ignorance Is Strength." - George Orwell.
Truth Isn't Truth. - Rudy Giuliani, 2018 Award winner, “Most Outrageous Diversion” by MSNBC for this quote
Last edited by Grog6; 05-28-2019 at 11:59 AM.
Reason: Had the adjustment direction backwards, D'oh.