It will never run right. I am speaking from experience in the mustang arena with a Mass Air EFI system though. They always ended up running pig rich unless you got a chip burned or had the MAF programmed to compensate for the bigger injectors. The Speed Density EFI is a good performance system if you have access to the parameters and know what you are doing, but we don't have any tuners that have found a way to reprogram them from what I have read.
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 '03 Inferno Red GT, 5 speed, STAGE 1, Mopar BOV, Plastic Intake, Modified Upper and Lower Airbox, Custom Airbox-to-turbo pipe, Borla dual exhaust, Maddog Short Shifter, Drilled/Slotter Rotors, Ceramic Pads, chrome wheels, chrome door spears, AMP chrome fuel door, PT Cruiser 3rd light diffuser, H&R Springs, Rear Sway Bar added, MGW chrome door lock pulls, Blane's hood struts, Custom license plate mount, some interior dress up stuff...more to come
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