Recent content by mark_watkins

I run a Gen I busa dragster in my local bracket races around SoCal. The car runs in the high 9's NA on pump gas. I run an MSD SB6 box to manage launches and shifting. I observed on the SB6's DA that the timing was jumping back and forth from 24 degrees to 41 degrees. Has anyone seen a Hayabusa...

Thank you to all who weighed in with ideas. I will be back on the track at New Years for a bracket race. I leaked down both my motors and the are showing all the cylinders within 1.5% of each other. I created a couple of maps that return the dwell to 100%. FYI, the car is running 14-45 with 76...

Here is the TPS fuel map that was in the ECU. Dwell was set to 110% and the cylinders were unified.

Here is the Racepak from the run. Engine RPM, Axle RPM and A/F on traced. The pass was a 9.86 at 129mph. I was running VP C12 and the MSD SB6 shifted at around 9500. Questions -I believe the engine RPM trace is showing the clutch is slipping in 1st and 2nd. I use a slider clutch set to engage...

I appreciate all of the info. I plan on running the car Saturday. I will post a .jpg of the Racepak DA screen.

I am racing a small rear engine dragster with a NA 2002 Hayabusa engine. I run premium pump gas, pretty much stock, except for a slider clutch and a MSD SB6. The car is running 9.80's at 130mph. I just installed a Racepak Sportsman unit with A/F sensor mounted 12 inches down from the flange. I...