Slight difference, unless you add ram-air. You also need to get your computer flashed and at least upgrade your muffler to get good results. Otherwise, it will help a little, but your seat of the pants dyno will forget about it within about 2 weeks. I get an extra 2-4 mpg with the ram-air on the highway, but even at a 10-15% better effeciency, it would be around 50,000 miles before break even with gas around $3/gallon. If you do the ram-air, do it for performance, or find a much cheaper way than a custom ram-air hood.
_________________ June 2001 Liberty Limited 4X4
Frankenlift II Premium, Al's Upper Arms, 245/75R16 C Silent Armors on Moabs, RL Skink Super Sliders, Rear DTT, Riddler Diff Cover, Fastman Throttle Body, Profinish-Proglass Hood, Borla Dual Outlet Exhaust, TransGo Reprogramming Kit, APS Stall Converter, 4.10 Gears, B&G Chrysler PCM, Lots of Line-X, etc...
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