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07-10-2022, 04:16 PM | #1 |
Scooby Newbie
Member#: 493601
Join Date: Nov 2018
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Fuel trim on cold start
Hi,
Does anyone know how to adjust Cold Start Fuel trim? I stored my car last November for the winter. I had my "2nd air pump" deleted when I had my engine rebuilt. Fuel trim was fine from what I remembered last Fall; definitely running richer. i recently pull my car out from storage, When I start up my engine in the morning, I will get Short trim at +25% and eventually goes down to +4%. once the engine warms up short trim will be +-0.75% to +-2% Hope someone could shed me some light, on this issue. Thanks in advance. FYI: 2016 Sti running AP.
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07-10-2022, 05:28 PM | #2 |
Scooby Specialist
Member#: 515308
Join Date: Jun 2020
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Old gas pushes the fuel trims up
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07-10-2022, 07:27 PM | #3 |
Scooby Newbie
Member#: 493601
Join Date: Nov 2018
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