So you guys getting over 15 with larger tires did you regear your speedo? I'm getting 14 mpg on a 4.2 MPFI that's been recently tuned including new injectors, new tank, plugs, etc... I'm happy with the results but I just don't see how people are getting close to 20 mpg if gearing and numbers are correct.
Then again I'm in CA and if I took off the cat, ran a simple breather, and got rid of the charcoal canister I may be able to get a few more miles out of it.
I use my GPS to find out how far I've driven.
'89 Wrangler 4.2 .....Sold......
'08 Grand Prix GXP 5.3 V8 303 hp 323 ft-lb tq, my baby =D ..... SOLD.......
'94 wrangler 4.0, parted out/traded off
'94 Wrangler 4.0 K&N cold air, bored throttle body, head polished, Comp cam, 4.5" RE extreme duty, ubolt flip, 1" booms, 1" daystar body, M.O.R.E shock mount extenders rear, shock mount extenders on front, D35 W/ Richmond Lunchbox, 4.56 Gears, 35/12.5/15 Pro Comp M/T, Black D steelies, Front bumper W/ Stinger and winchplate (Armorology), Warn XD9000I, Dakota seats,Kenwood KDC-MP342U head unit, Soundbar with Kicker DS65's, Kicker DX200.4 Amp, Kenwood 6X9 on bottom of rollbar, Infinity 4X6's in dash, Tuffy Glovebox, 4 100W Daylighters, and a CJ hardtop.
2012 HD Night Rod Vivid black stock =D
R.I.P. Chad Daniel French 29 July 1982 - 25 Oct 2010 I'll Miss you Bro