Banditt76
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- Jan 11, 2020
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I have a 2003 V6 Auto Mustang with a ProCharger 11 psi complete supercharger kit installed with BBK Shorty headers, BBK 65mm throttle body, 42 lb injectors, 340 lph fuel pump, off-road h-pipe, dual exhaust, SCT 90mm MAF and custom dyno tune. Since last November I have had trouble starting the car first thing the next morning after it has been sitting overnight for 12+ hours. I have done some maintenance such as replacing the battery, spark plugs, Royal Purple engine oil, ProCharger supercharger oil and K&N fuel filter. The first startup of the day sometimes takes up to five cranks to get the engine to fully turn over while also having to supply some gas pedal so it doesn't stall. The rest of the startups during the day startup just fine. I tested the battery and alternator and both are fine. Not sure if the cold weather overnight is the main cause or not. The car always sits outside as I do not have a garage unfortunately. It can get into the single digits sometimes here. I cannot change any tuner options with the SCT tuner as the dyno shop locked all those options out. Any advice on what else I should check?