Getting The Car To Idle Up When Cold Without Iac Valve?

[unique1]

hey guys im just after info on how to get my rb26 to idle up abit (drops to like 400rpm when stone cold) when cold starting, i have autronics ecu and no iac valve hooked up (output on ecu is used for boost controller, so no other outputs to hook up).

it used to idle up fine with another tuner doing the work but the new tuner reckons only option is to hook up iac valve, is this true? i cant see how it used to run perfect when cold on my old engine setup and now it wont, though it did have stock cams instead of the big lift cams.

any tuners have any ideas to help?

[Adriano]

Im assuming you are using an smc with only one PWM output, you could fit a idle control solenoid that isnt Pulse width modulated, or a wax pellet idle up bypass.