i'm leavin it in D.
wat i did was tested rpm shifts 5800-6300. 5800 was the strongest, got them to finally chirp, 6300 felt sluggish. i saw a few dyno's of stangs that have the same mods as me, and the graphs have shown the same results with a canned tune: peak HP has been at 5800 and up, peak torque at 4200-4400. seein that goin into the next gear the car generally shifts down about 1500 rpm, 5800 seemed the most logical to get to peak torque, and it's workin like a charm.
still won't replace a custom tune tho, i just wanted wat everyone was gettin in the mean time tho
2006 Mustang GT: 5-speed
Show: Hood scoop // Side Scoops // Louvers // GT500 Spoiler // Rear diffuser insert // Stripes // Mustang trunk letters // Interior goodies.
Go: JLT intake // J&M LCA's // J&M UCA // Strut tower brace // FRPP Front Lower Control Arm Brace // Pro 5.0 Shifter with MGW blue striped shift ball.
Flow: Flowmaster American Thunders.
Stereo: Pioneer DEH 2200ub.
Oh and of course, the lead foot mod