willn
July 21st, 2014, 12:55 AM
Alright, now that I am going to COS3 and getting things in order, I thought I would start a new thread to ask about how to tune timing for an initial tune.
So, thinking about it, it would seem like there are only certain cells that would need to change in the spark tables. For example, in the base spark in park, how would I ever even have a cell like .08g/cyl and 4800 RPM get hit? Once I increase RPMs, air intake will drastically increase. Am I thinking about this correctly, or should I be changing ALL cells?
Just for reference, I am attaching my mods and tune.
2001 LQ4 bored and stroked to 408.
317 Stock Heads with Comp Lifters and Comp Springs
Wiseco dished 4.030" 9.5:1 CR pistons
Comp 230/238 .600 .603 @ 114 (Spec'd by Comp to maintain towing ability)
Melling High Volume, High Flow Pump
Cloyes single timing set
All new sensors in the block.
Whipple 2300AX (want to get to about 10-15psi)
Fully built 4L80E
Circle D 278mm 4L80E Torque Converter 2800 stall
Tru-Cool 40K Transmission cooler
1000cc at 43psi FIC Injectors, so with manifold referenced they are about 114lb/hr @ 58psi
Pacesetter 1-7/8" LTs Tri-Armor with true dual 3" custom system
Volant CAI with Scoop
Intercooler Kit - CX Racing 31x12x4
EFI Live V1 going to COS3 and SD tune.
34" Radiator w/ '05 Efans
17163
So, thinking about it, it would seem like there are only certain cells that would need to change in the spark tables. For example, in the base spark in park, how would I ever even have a cell like .08g/cyl and 4800 RPM get hit? Once I increase RPMs, air intake will drastically increase. Am I thinking about this correctly, or should I be changing ALL cells?
Just for reference, I am attaching my mods and tune.
2001 LQ4 bored and stroked to 408.
317 Stock Heads with Comp Lifters and Comp Springs
Wiseco dished 4.030" 9.5:1 CR pistons
Comp 230/238 .600 .603 @ 114 (Spec'd by Comp to maintain towing ability)
Melling High Volume, High Flow Pump
Cloyes single timing set
All new sensors in the block.
Whipple 2300AX (want to get to about 10-15psi)
Fully built 4L80E
Circle D 278mm 4L80E Torque Converter 2800 stall
Tru-Cool 40K Transmission cooler
1000cc at 43psi FIC Injectors, so with manifold referenced they are about 114lb/hr @ 58psi
Pacesetter 1-7/8" LTs Tri-Armor with true dual 3" custom system
Volant CAI with Scoop
Intercooler Kit - CX Racing 31x12x4
EFI Live V1 going to COS3 and SD tune.
34" Radiator w/ '05 Efans
17163