I know..drive slow heh I was thinking about something else like replacing 02 sensors, plugs, wires and...???? Give me your sugestions....Now I have M6 and 4.10 gears 255/16 tires and my gas millage stays around 10mpg. Car is all stock!!

 

try new plugs, wires, air filter, the hotter the engine the more gas efficient. 4.10 dont help that gas problem! Try MSD is ignition system, i hear they help out a lil.

 

check for exhuast leaks
o2 sensors
coil, wire plugs
take it from there
your milage sucks

 

charcoal canister

 

Buy a hybrid........

 

i knock down consistent 20mpg+ driving around town if i keep my foot out of it most of the time and shift 1,3,5 around town and shifting before 3000rpm. 4.10s didnt seem to hurt mileage at all except at constant speeds above 85. replace your o2 sensors if you havent lately that will help. also make sure you keep your tires properly inflated since the gas prices have shot up i have been running 40 in front and 37 in the rear where normally it would be 35/32 just because it rides better.

 

Worked for me

I get 500 MPG now,a nd 900 HP from the combo. all else is stock.


BTW, you beat me to it you bastage