Took the car back down to Straightline's Mustang dyno to see what I picked up with these mods :
Kooks 1 7/8" longtube headers & hi flow cats
SLP Loudmouth II
Rotofab CAI
Car is still running the OEM tune...until the cam goes in it.
Results : 422 rwhp/406 rwtq 
Weather corrected results.
Graph showing stock baseline over mods.
On the rollers.
