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Jeff Chambers · 11-22-2006, 07:34 AM

Shouldn't be any need to adjust anything if the MAF and injectors are calibrated. The calibration works to keep the necessary pulsewidth throughout the entire operating range. That being said, the calibration curve of the MAF is key. ProM had pretty bad calibrations, Granatelli's have been pretty good and the PMAS are even better. C&L tend to be a little lean in the lower range. The best thing you can do is find a competent tuner in your area and have the entire combination tuned with a custom PCM calibration (chip). When I tune a car, I always set the FP to 39-40 with the vac off and base timing at 10-degrees. All adjustments are then taken care of in the custom programming for optimum performance and driveability.

11-22-2006, 07:34 AM	#2
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Tuning new Mass Air and 30lb injectors Shouldn't be any need to adjust anything if the MAF and injectors are calibrated. The calibration works to keep the necessary pulsewidth throughout the entire operating range. That being said, the calibration curve of the MAF is key. ProM had pretty bad calibrations, Granatelli's have been pretty good and the PMAS are even better. C&L tend to be a little lean in the lower range. The best thing you can do is find a competent tuner in your area and have the entire combination tuned with a custom PCM calibration (chip). When I tune a car, I always set the FP to 39-40 with the vac off and base timing at 10-degrees. All adjustments are then taken care of in the custom programming for optimum performance and driveability. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"