Will replacing the stock coil with an MSD coil help improve gas mileage? Will it also eliminate some of the popping heard during shifts when the car is cold?

 

umm only if your stock coil is messed up

If your car runs and starts fine, then your coil is probably ok, and gettin a new coil wont fix the problems u are having. It sounds like maybe u need a wire/plug change.

Marcin

 

so what would be a description of a messed up coil. And what kidna of plug/wire combo woudl you suggest? I don't need anything to expensive or heavy duty...i pretty much stick to the streets...not the track...

 

a bad coil could cause a miss. the miss is usually in the higher rpm range. just to warn you, many people have problems with msd coils. actually, i was told that some members on here called msd about a coil and the staff at msd recommended getting an accel coil. do a search for "coil" and you will probally find what your looking for.

 

i replaced my coil with an msd and have had no trouble with it. it improved my milage but i also did new plugs and wires so i can't give all the credit to any of it. all the fbodies i have heard do that popping sound on downshift. its just a thing