03 mustang

Willlee35

New Member
Dec 10, 2018
1
0
1
Lexington ky
I have a 03 mustang gt with 24lb injectors upgraded intake manifold, throttle body, plenum, cold air intake. has a small rough idle and runs rich but runs and drives, starts good I think I still have the stock maf sensor could this be causing the rough idle and rich fuel and if so what size maf sensor should I upgrade to
 
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Changing injector sizes is best done via an updated tune. Attempting to "hack" the MAF to "lie" to the PCM about the amount of air entering the motor at best will produce a good running motor only some of the time.

Where as a PCM that has the correct injector size will be correct most of the time.