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P1514 - Airflow to TP Sensor Correlation High

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Old 06-04-2013, 05:33 PM
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Default P1514 - Airflow to TP Sensor Correlation High

Expected airflow greater than calculation. Pcm has an idea of how much air should be entering the engine at given rpm and Throttle angle. I gather its seeing the map sensor go from vacume to nothing, and its going into limp mode affraid that the throttle has opened wide opan. 1 bar DBW SD 5.3 Side mount m112. thinking I should just turn off the code. Anyone ran into this on a dbw SD boosted engine?
Old 06-04-2013, 07:43 PM
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Originally Posted by PowerAdder
Expected airflow greater than calculation. Pcm has an idea of how much air should be entering the engine at given rpm and Throttle angle. I gather its seeing the map sensor go from vacume to nothing, and its going into limp mode affraid that the throttle has opened wide opan. 1 bar DBW SD 5.3 Side mount m112. thinking I should just turn off the code. Anyone ran into this on a dbw SD boosted engine?
It's very common. Every DBW boosted vehicle needs the P1514 parameters modified. Turning off the code won't stop it from going into REP. It only stops the code from being reported.
Old 06-04-2013, 09:13 PM
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Thanks for the insight, Ill try to search around for more information on the corect calibration.
Old 06-04-2013, 10:02 PM
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Ok think i see 2 ways to adress this problem. One way is to lower injector size and VE table acordingly to tryand trick the calculation? Another way is to adjust the 1514 table in 10% incraments untill I operate in WOT? Im compleatly new to tuning, and I now see this is quite a newb thing to be asking about, sorry.
Old 06-04-2013, 10:10 PM
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Scale that table by 1.8 and be done with it.
Old 06-04-2013, 10:22 PM
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Thanks I'll do that tomarro. I was dissapointed, just got everything finished up went out to start the car sunday and nothing. 4 TB codes, found 3 bad conector pin fitments and replaced the connector. Today I get home to start some tuning and I cant even get into it. Thanks again!
Old 06-05-2013, 07:42 AM
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There is a single value that cures that (allowable accepted error limit) but it's not in your software. About all you can do with what you have there is scale that table.
Old 06-05-2013, 08:31 AM
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I've always just maxed the table. Never an issue.
Old 06-05-2013, 09:03 AM
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Originally Posted by Slowhawk
I've always just maxed the table. Never an issue.
With what you guys have for software that is about all you can do.
Old 06-05-2013, 10:08 AM
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Originally Posted by Ed Wright
With what you guys have for software that is about all you can do.
And it works just fine.
Old 06-05-2013, 12:07 PM
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Great thanks for the help guys, Ill get it done after I get out of work today. Long 12 hours to wait!!! Hope for 7psi.
Old 06-05-2013, 08:18 PM
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Maxed the table and hit the gas a bit. Man this blower is loud. Cant wait to get it out for some wot tuning. Thanks for your help guys!



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