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Old 02-19-2012, 12:56 AM   #11
Scooby Newbie
Member#: 64397
Join Date: Jun 2004
Chapter/Region: SCIC
Location: Corona, CA USA
2006 WRX STI
Steel Gray


Thanks for the kind words above, I am just trying to help out where I can. Tuning is easy once you can wrap your head around it.

There are quite a few things that play into a car starting and idling. Lots of variables. One of the first steps is to get your AFR's at idle dialed in for your fuel. Make sure they are in the ~14.8 on gas and 14.8-15.2 on E85. Next if you have O2 Feedback make sure that your correction is within ~2%+/- in most weather conditions. If you afr correction changes a lot in different weather conditions your AIT correction has not been setup correctly.

After you have a nice stable AFR at idle you can really focus on the starts. On Gas your car should fire in almost every condition.

You should start with your Initial Crank Pulse table at zero across the board. You need to get your Crank Injector Time Table dialed in first. You need to get your Warm/Hot starts dialed in. After that you can work on your cold starts. The cold starts really just need adjustments to the Initial Crank Pulse table.

Another big thing to help with starts is the Crank Advance, under Engine Start. This will assign a fixed Ignition Timing value when you are cranking, and before you are in run mode.

Fast Starts - Adjust "Initial Crank Pulse"
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TheBoz is offline   Reply With Quote