Can someone tell me about upgrading the chip? How much does it improve performance on the 1.8TQM?? How much does it cost? Where do you buy them....any ones work better than others? Thanks, Brian .....and what's this stuff about the flashing of headlights? Is it assimilated to the "Jeep wave"? 3mos., 30 days away from being an owner of a BLACK 1998 1.8TQM