So I'm in the process of tuning my car with email tunes but whÃ t should my maf counts be at and what could be a reason that they are low also at idle my short term fuel trim is around .96 and 1.03 what could be causing tgat
my tuner has only asked for logs idling in neutral and free rev in neutral so I have not done any under load or at wot he said to start witht his and when its dialed in better we will do those I am running and hpx maf
Try this log idle, 1500, 2000, 2500, 3000, & 3500 rpm. Hold each one steady for about 20-30 seconds, alowing the fuel trims to stablize. Log the Fuel Short trims for both sides, Maf Counts, ISC duty Cycle, Fuel Pressure, TP absolute, TP relative,spark, spark source, air temp, coolant temp,fuel source, and your wideband if possible. Make sure the engine is at normal runing temp when recording. Do you have the tuning software? Be sure to save the file as an excel File, and post it up.
In addition to the items in the above list, you will also need RPM, engine load, gear, vehicle speed, and analog 2 if you have a wideband O2.. Also, the adaptive learning should be turned OFF if any changes to the tune are going to be made. Same holds true if you are data logging. You need to see what the numbers are showing without too many internal computer tweeks altering the tuner programmed in numbers. .