97 Ultra, 96" Stage 1 from new. Rinehart True Duals,
Installed Andrews 48H cams last summer. Had dyno after cams. Couldn't communicate with SE tuner. Replaced with Power Commander 5. Ran strong but crap fuel mileage. Black carbon smoke on hard accel. Flutter at around 2200 RPM. Had dyno again this August (different shop) to try & improve mileage. They said it was VERY fat. Ran more evenly thru a pull. No complaints on power. Still, plugs are black after a 3,000 mile trip to Colorado.
Mileage on highway, steady 75MPH thru Kansas, 32 & 33 MPG. 25 miles from home developed miss. Changed plugs. Still has miss, still bad flutter at the 2200 rpm range.??????:
Any Ideas?
Thanks,
Jim
Installed Andrews 48H cams last summer. Had dyno after cams. Couldn't communicate with SE tuner. Replaced with Power Commander 5. Ran strong but crap fuel mileage. Black carbon smoke on hard accel. Flutter at around 2200 RPM. Had dyno again this August (different shop) to try & improve mileage. They said it was VERY fat. Ran more evenly thru a pull. No complaints on power. Still, plugs are black after a 3,000 mile trip to Colorado.
Mileage on highway, steady 75MPH thru Kansas, 32 & 33 MPG. 25 miles from home developed miss. Changed plugs. Still has miss, still bad flutter at the 2200 rpm range.??????:
Any Ideas?
Thanks,
Jim