with RA-1's and an Exedy twin disc I'm @ 1.7s with 2 full revolutions of wheel spin when I launch

 

Im gonna have to agree with warrtalon on this one. Launches are obviously no good and must be running to lean. Those traps are horrible. Disconnecting the two step will help alot. Launch higher and harder. I only could take out as much as 5-10% when I had exhaust only on 93 octane to achieve around 11.5 across the board. On 110 octane I had as much as 18% out and was in the low 12s for afr. I bet you are pulling gut load of timing in third and fourth gear. Try fatting it up and I bet you pick up 3-5mph.