Has anybody ever run a 12 with a regular radial? I tried today and could only get a 13.3@114mph. I was hoping for a 12 in street trim (91 octane, capped exhaust, alky, BFG KDWS tires 245/50/16) Just couldn't do it................ Of course this was with the exhaust uncapped, because halfway down the track on the first run, the test pipe got "blown out" of the down pipe (Just a little bit of backpressure?? boost pegged the gauge at 30 before I could let off)