Dave, take alittle different approach here. He is only saying what he has NOT bashing.
Whipple you should deffinetly have cold IAT at idle, if you don't have the water temp gauge hooked up you should still see a IAT drop of 25*+ from abient, also your hoses should be cold/sweaty and the water temp should prolly be around 40*. You have a vaccume leak or a bad divertor valve. Look at the didvertor valve to see if it is fully closed when the A/C is on, if its not it will be allowing the water from the stock exchanger to mix in and not be as productive as it can be.
CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS
LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.89@129mph
TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRE cam & tune,LPE Fuel, AI Super Chiller,MT ET Streets