Found this video online because i been on a G8x video binge lately and came across this.
Stock M4 comp vs '20 GT 10 speed auto with intake, no cats, and a tune.
The M4 actually started to pull from 135 or so but basically about even the entire race, maybe the mustang got the M4 by half a car but the aerodynamics of the M4 might have caused it to pull at 135?
Would anyone agree the M4 is stock or perhaps a tune?