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'''Idle Air Control''' The idle stepped does something, but I'm not confinced it's right. I connected the 4 wires from the stepper to the A,B,C & D channels (on the EC18 connector) going clockwise round the motor looking at it from the connector end. My stepper is an "anti-stepper" like Marcell's... It was operating the wrong way round at first. '''Idle controls''' Idle afterstart RPM (added value?) - Value to add to base idle speed when the car is first started. Idle afterstart duration (s) - the duration to do the above for. IAC afterstart (steps per 160 rpm) - don't understand what this is getting at. Max steps to extend - total number of steps the motor can do. I managed to shoot the pin out of the end of mine. Don't do this as they get stuck in awkward places... IAC step sequence - Lots of things, depending on how you wire up your motor. Mine was 201. ie drive C, then B, then D, then A. stepper speed (ms) - Speed motor moves at. ie time between steps. 0 ms is fast and can shoot the pin a long way (see earlier) iac_conf RAW - no idea! something to do with raw hex config? See the IAC section of: MembersPage/MarcellGal/EngineSwap/AirFeed for more info. on config I thought I'd cracked this. but I havent: I still can't get a stable idle without the engine racing. Hmmm. '''Config''' ||Idle cold||900|| ||Max cold idle temp||66|| ||Idle warm||800|| ||Min warm idle temp||75|| ||Idle afterstart RPM (added value?)||100|| ||Idle afterstart duration (s)||4.0|| ||IAC afterstart (steps per 160 rpm)||25|| ||Max steps to extend||250|| ||IAC step sequence||201|| ||stepper speed (ms)||2|| ||Idle control P||80|| ||Idle control I||10|| ||Idle control D||5|| ||Integral time speed||60|| ||Integral decrease limit||6|| ||Integral increase limit||25|| ||Integral deadband||10|| ||IAC deadband||10|| ||Seconds between overclosing||5|| Idle step bins: 220 when at 71.1 degrees (no point in including the rest of the table as it's a warm idle problem) The idle valve says it is at 80% on Megatune's display page, yet the idle still races at 1300 to 1400 RPM. I don't think there's a leak in the plenum, as that's all I can think of that would cause the problem. Help!
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