He may possibly it is true that cold air adds hp and maybe he may push that do to weather conditions being somewhat ideal. I.e. keeping motor cool and temps low and air intake temp nice and chill. Personally no such thing as winter here in miami lol so wouldnt be able to help prove this claim
1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.