Hello all,
setup: M20b23 (9.8:1 comp ratio and different combustion chamber to the m20b25), MS2, LS1 coils in wastes spark (no dizzy), Closed loop idle control with PWM 2 wire idle valve.
In the interest of fuel economy I am looking to optimise my megasqurit tune further. I currently have it targeting 14:7 on cruise with wide band feed back on closed loop, works well.
What sort of idle AFR do you think i can get away with? when i first got the engine up and running on mega squirt i found that it seemed to want a bit more of a richer tune at idle, its currently targeting 13.8:1 which works fine. But this was before i deleted the oem coil and now have LS1 coils in wasted spark, unsure if this will help?
I am currently at 19deg timing at idle at 13.8 and it idle fine.
Do you think i can achieve 14:7 at idle and if so what do you suggest i do for timing? increase? decrease? up the dwell time a touch to help it fire on a leaner mixer?
setup: M20b23 (9.8:1 comp ratio and different combustion chamber to the m20b25), MS2, LS1 coils in wastes spark (no dizzy), Closed loop idle control with PWM 2 wire idle valve.
In the interest of fuel economy I am looking to optimise my megasqurit tune further. I currently have it targeting 14:7 on cruise with wide band feed back on closed loop, works well.
What sort of idle AFR do you think i can get away with? when i first got the engine up and running on mega squirt i found that it seemed to want a bit more of a richer tune at idle, its currently targeting 13.8:1 which works fine. But this was before i deleted the oem coil and now have LS1 coils in wasted spark, unsure if this will help?
I am currently at 19deg timing at idle at 13.8 and it idle fine.
Do you think i can achieve 14:7 at idle and if so what do you suggest i do for timing? increase? decrease? up the dwell time a touch to help it fire on a leaner mixer?
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