As far as I know, there is no plate out there that will hurt fuel economy, but thats not saying your fuel economy wont go down if you always have your foot in it. If your not looking for alot of power, go with a 10 or 11 plate, if your looking for a little butt horse power try a 0 of a 100 plate. If you dont want to spend money on a plate, then slide your stock plate full foward. Pulling the plate completly is an option too, but you will have to be easy on the throttle and contol fueling with your foot if you want to get some good MPG's. Just find the plate that suits you and your driving style, and play with your starwheel. Making usable power and still acheiving some good fuel milage is all about tuning your P7100 Pump
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1999 QCSB BLACK 5 SPEED- Studded & Ringed Head, Boost, Pyro, Fuel Pressure Gauges -
150 HP Sticks- Snow Performance- BHAF- Southbend Dual Disk-
Edge Comp Box Stacked W/
Smarty-Aeromotive Mech. Fuel Pump- 5 In. Single Exhaust