Quote:
Originally Posted by upallnight
An engine needs to run a little richer when it first starts up especially in cold weather. Back in the days of carbs, a choke was use to accomplish the required rich mixture, nowadays the computer control the injection cycle to accomplish this rich mixture. If you have a piece of software like Torque and an OBD II adapter you can time how long it take to go from open loop cycle to close loop cycle.
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I figured it had something to do with the cold weather it just seemed like a significant drop off even for cold weather. Thanks for the insight, I don't have any software but my local indy is really helpful so I'll check with them.