Originally Posted by bigblockbill

Alright grip grip. I had a great time at test and tune Sunday. I wanted to post my experiences of my first outing of 2013. The car now has an SL55 fuel pump, 185mm crank pulley, a possibly lean flash(no data yet), dual CAI, stacked heat exchangers and a Phantom Grip with 315mm Nittos. With a good launch iIt only ran 8.02 at 86.5 mph. The engine stumbled a little after changing into second and noticeably after shifting into third gear. We discussed the spark plugs so I went to Twilight Zone and got 12 Bosch Iridium IX heat range 7 for $6.99 each. When removing the old plugs I found Bosch Super Plus gapped at .27. I'll be gapping the new plugs at .35. Any idea why they went with a .27? See you at the track.