I've been putting off chipping my L for fear of warranty cancellation so I've been running it with only afew mods (modulator valve, K&N panel, oval blade TB, 2" lowering). Though I'm envoius of the 12 second trucks, I'm pretty satisfied with my best time: RT:.528 60':1.930 1/4:13.358 MPH:101.21 race weight:4612lb (spare tire, hitch, jack, bed mat and front sway bar removed,~1/4 tank of Ultra). Was hoping to better that, but had to put the stock stuff back on for I/C replacement and noisy blower pulley, so looks like I'm done for the year. Anyone in the 12's yet without a chip?