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Old 06-22-2009, 09:56 PM
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Cranking the engine on startup

When I first turn on my car after not have driven it for a few hours I have to pump the throttle to get it to start. What table could i usse to help my car fire up without having to pump the throttle? Crank VE vs. TPS? Crank Spark Advance vs. Coolant Temp?
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Old 06-23-2009, 11:10 AM
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Here's a post that has some info on warm starting it's on page 16, post # 239 and 240 of this thread " 2 Bar Stock PCM Speed Density Tune for >6psi (Forced Induction) - Page 16 - CamaroZ28.Com Message Board " Talks more about fueling and AFR than timing. If you have to open the throttle blades to start you may be on the rich side and require leaning out the prime pulse width table at higher temps.
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Old 06-23-2009, 07:39 PM
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thanks bob. I noticed in an old tune which didn't have this startup problem my crank spark advance tables were different. i'm going to change them back and then see if the car starts up fine. if it doesn't ill modify the tables listed in that post. i might just modify them anyway to get the car to crank very quickly.
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Old 06-23-2009, 08:33 PM
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okay increasing the timing helped out a little bit. so i went and decreased my crank ve by 10% and my prime pulse width vs coolant by 10% as well and instant start up. oh yeah
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Old 07-06-2009, 08:01 PM
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the instant startup was a fluke. it was still warm from the last startup. which table should i modify further?
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Old 07-06-2009, 08:04 PM
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nevermind im just gonna try reducing the tables i already did by more.
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