So are you saying my 23 MPG with cruise control on the whole time (on the highway of course) and 330 mile range is not where I should be for a bone stock 03 GTP with 60000 miles? I was gonna change out the fuel filter...but it won't stop raining.....
-Jesse
this is sounding pretty close to OK I guess........depends on what area you live in too........it is not really hilly around here....Have you ever changed your plugs out on the gp?
98 GTP Coupe- 180* T-stat, GMPP Front Sway Bar, Dual Aeroforce Interceptor's, TDC FWI, TDC Taylor 10.4's, ZZP SS Plog, ZZP 3" SS catted DP, ZZP MPS W/3.4, AL104's gapped @.055, 3800Perf. PCM