Quote:
Originally Posted by Dipstik-sportech
The initial startup rough idle is caused by it firing up on larger than stock port injectors. Mines done it for years, you get use to holding the throttle a bit for 20-30sec until it kink onto the direct injectors.
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That's good to know. My new motor does this on every startup regardless of temps. Rough idle, stalls unless you hold about 1500 rpm. You can tell when the ECU gets it sorted out cause it blips the throttle then then idle slowly settles down to 900 rpm and smooth as can be after that. If the car has only been off for 10 minutes or so this does not happen. I'm running ID1000's.