04 Mach vs 03 Cobra

[1995MGTS]

Originally posted by andy669
When you change the blower pulley on those cars, you have to put a chip in it too otherwise it will run dangerously lean. He probably didnt mention that. I'll bet that car is around 440 at the wheels.

Andy

Not always true. It depends on the pulley you change it too. I had a 3.2" pulley that was pretty decent on the air-fuel (12.5 down low to 11:1 up high). I don't run a chip but the Afterburner eFPC which allows me to fine tune my air-fuel. I defintinely needed some air-fuel tuning after putting on the Lightning pulley. Unfortunetly, by not messing with my timing curve (like a chip would), I'm leaving a lot of torque on the table.