First P-51 Intake Running in Alberta

Sonicpony said:
the power does seem low for all those parts,I have that with factory heads/cams/headers, see my sig
I'm guessing you probably had yours dyno'd on a dynojet? If your making those kind of numbers with stock H/C/I on a Mustang Dyno congrats! That would be quite high for your mods.
 
Little things can make a difference such as temperature and altitude and gearing. On a Ford 9" rear end you can get a 4.56 and a 4.57 ratio. The tooth count is different and the 4.56 is slower because there is more drag.