My dad has an 06 300c srt-8 and recently had the diablo computer installed. He went to the track last Friday and ran a best et of 13.15 and mph was 103. His previous best was 13.22 and mph was the same. So he didn't get much and i told him i wouild check on the forums to see if anyone has any advice and/or knows any "trickery" with tuning these things. Perhaps something is not quite right? He has a cold air/intake, throttlebody with spacer, and esp mod from GSM. Appreciate any input on this. Thanks.