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Old 10-17-2012, 11:33 AM   #1
Joshua1902
 
Drives: Yaris tsport
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Do I need to remap?

Hi, I'm looking at putting a 4-2-1 manifold and a full stainless straight through which has a decat, do I need to remap my car after this or will it be fine to run?
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Old 10-17-2012, 11:41 AM   #2
suckerface
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You'll just need to reset your ECU. Remove the neg battery terminal for 5-10 minutes, then replace, and the ECU will re-learn the fuel trims to level off your idle (about 5-10 minutes as well). It may take up to a day or two to really level off as it finishes the fine tuning.
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Old 10-17-2012, 11:44 AM   #3
Joshua1902
 
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Do I need the engine started when I remove the negative terminal, is this the only thing I will need to do?
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Old 10-17-2012, 12:03 PM   #4
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No, engine off, remove neg terminal, install header, replace neg terminal, start car. No idea what sort of havoc you would create removing the neg terminal when the car is on.
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Old 10-17-2012, 12:28 PM   #5
Joshua1902
 
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Thanks, ill let the garage know before they swap them over
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