Fair enough. With gas prices above $4 now, anyone coming on here looking to mod their car for MPGs is barking up the wrong tree. I've even had a friend try just driving the speed limit and sticking with low accelerations. He was surprised how much a difference just doing that can make. I think people are looking for a quick fix. And hate me for saying it, but cars come from the factory are pretty well configured for fuel efficiency with a factory set up IF you drive slow and don't accelerate hard. That's why the government adjusted all the fuel economy ratings a few years ago - they were based on 55 MPH speeds and slow accelerations.

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2004 Impala SS - ZZP PCM, 3.4" Pulley, K&N CAI, TOG Headers, SLP Cat-Back, 180* thermo, Autolite 605s, PRJ Performance wires, Alternator rewire, GMPP Handling kit
2000 Grand Prix GT, Commuter Car - K&N CAI, GMPP Handling kit, ZZP downpipe w/U-bend delete, ZZP Plog, Alternator rewire