ONCE the vehicle has reached NORMAL operating temperature there will be almost NO difference
if you allow the vehicle to COOL and sit then YES these vehicles gain a decent amount from a cool down period
HOWEVER when being driven there would be less then a 5 horse dif between the car having sat and idled for 15 minits vs the car just having reached operating temperature
AND i have NEVER had a sizable loss because only people who want to ARTIFICIALY INFLAT THE NUMBERS FOR THIER PRODUCT do not bring the car to full operating temperature before doing a pull.
the ONLY reason not to is to 1 make your product look good and say look how much more power we made
or
2 just to see how much benifit a long cool down between rounds would have for a pure drag car.
dyno pulls should all be made at operational temperature with a fully warmed up engine to duplicate what the engine will actualy see on the road.
and in order for that heat shield to make any significant kind of diference to the air being pulled in to the motor you would have to sit still for a VERY VERY VERY long time
dyno cells DO NOT put fans on the motor to cool the engine for more power they do it becuase there is NO airflow across the radiator when stationary and the engine needs that airflow for proper cooling when the engine is seeing full throttle loads and NO air flow across it it WILL over heat without any kind of fan your radiator fan is NOT enough.
the diference in intake temperature with a fully insulated intake pipe vs a non insulated pipe is ONLY a couple degrees.
I personaly tested this on my race car with a turbo.. the non insulated steel pipe wich runs RIGH OVER one of the turbo headers wich are far far far far hoter then any normal engine compartment header is .. vs wraping it with 1/2 inch of heat reflecting insulation resulted in less then 3 degree change in actual intake air temps.
and this was on aproximately 2 and a half feet of tubeing.
on a 05 up mustang when given the short 8-10 inche distance the air travels through that tube and the velocity it is traveling at you would exspect even a far less increase/decrease in air temps.
anyone who claims 25 horse just for the cold air is ALSO A LIAR and trying to sell parts
a good half of that comes from the custom tune ..
the reason these cars gain so much from the cold air kits is the factory tune is far off and very rich
real world people who are not trying to sell a PART,
like myself and murillo motor sports who realy care about the customer wil tell the customer the truth.
the cold air is only worth around 12 horsepower out of the 25 or so they all claim the rest comes from the TUNE that is REQUIRED to be done with the cold air.
if you have done JUST a tune on your STOCK box with a
k and n filter you will only gain 10-14 horsepower by adding a cold air and retuning..
im not trying to sell parts im trying to educate the customer and give them real world knowledge and facts isntead of advertisement hype.