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Looking for a 2003 4.3 v6 automatic Chevrolet Express stock file. I emailed support and nothing available.

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Try increasing the decel spark and increasing the decel cutoff rpm. Outside of tuning the camshafts can cause issues if not timed properly and a low vacuum bypass valve may be needed.

Work on your MAF tuning. Curve does not look right on tune. lb/min reset to .11 at 4200 rpm in datalog.

What is the turnaround time on adding a vehicle. I have a 2015 Mustang GT I'm currently waiting on the definition to be added.

Just wondering if this is correct. Rpm row missing on the PE Throttle/Pedal Table.

68109

Is it going lean on the gear change?

SCT shows this table as Rail Temp Time Constant. Does not say anything about Ambient temp. What did you set your values to?

43005 - Fuel Pump Injector Pressure Drop Adder vs. Ambient Temp: This adds to the injector pressure drop in relation to ambient air temperature.

What are IAT's at? IAT sensor should be located...

43005 - Fuel Pump Injector Pressure Drop Adder vs. Ambient Temp: This adds to the injector pressure drop in relation to ambient air temperature.

What are IAT at? IAT sensor should be located...

Does the timing change after the reflash too? When it does start what are the Lambda readings ?

https://fordperformanceracingparts.com/parts/ics/m-9593-m39.pdf

Log Oct 2 8 the negative spark is probably related to torque management since you lifted the throttle. You picked up a little KR after the shift that may be false or as txcharlie suggested exhaust...

With rich dtc's you need to work on tuning the maf. Try delaying closed loop longer than 15 seconds.

Try increasing your crank fuel mass.

What is you base fuel pressure set too? May just need to start adjusting cranking fuel.

OK. With the knock advance table at zero what allows more timing?

What are the fuel trims when car is running?

Attached is the calibration data for return fuel system with a base pressure of 39.15 or 55 psi. You need to set the base pressure with vacuum line off pressure regulator, once set reinstall vacuum...

Which injector are you using? Leave it boost referenced to maintain effective pressure on the injectors. Your multipliers need be set to one.

Empty fuel tank. Run some high octane race with similar stoich point to pump fuel and see if it still knocks.

The current log shows it is pulling timing as KR increases. Current tune has the knock advance limit zeroed out past 3k.

Attached you will see a compare to manual transmission 2011 5.0. The green tabs have been changed from stock. Under IAT Spark Mult. Download a stock tune from the repository to compare your current...

Log intake air temperature. You should return your IAT multiplier back to stock. Let the ecu pull timing as IAT increases, high iat's increase fuel burn rate and will lead to knock.

Where is the attachment?