I'M FRUSTRATED!!!! (kinda long, sorry)

[USMC302]

Generally the tube increases in size as you go up in the calibration. Here is one point to pay close attention to though, make sure the tubes you bought were for your year models and not the 94-95 model and that they are C&L tubes. The 24lb tube for the 1995 76mm C&L is different than the 1988-1993 76mm C&L mass air, even though they are both 302 5.0's. Call C&L and they have them specifically color coded for the tube you should be using in relation to the size you are running and the year car you have. Call with the color you have.

Another thing to check is your O2 sensors, and pull those plugs again, could have fouled out, I've had plugs do that brand new. We can always tell alot from the plugs.