NHRA Legal MSD Timing Control

Re-read your post. Two lines above the bold part says "2007 IHRA updates" not the NHRA.

 

Oops, this is what NHRA says:



CONTROL OF STARTING LINE RPM IS PROHIBITED BY THE FIFTH SENTENCE OF THE SECOND PARAGRAPH OF THE TRANSMISSION SECTION OF TAD (WHICH ALSO APPLIES TO TAFC); PAGE 150 OF THE 2007 RB, PAGE 146 OF THE 2006 RB. THIS IS IN A PARAGRAPH THAT DEALS PRIMARILLY WITH TORQUE CONVERTER EQUIPPED CARS BUT IT APPLIES TO ALL CARS. IF YOU DESIRE THE 8971 MSD CAN PROVIDE IT WITH THE RPM LIMITING DEVICE DISABLED. HOWEVER; IT DOES NOT HAVE AS MUCH CAPABILITY AS THE 8973.

 

so, we can't use the rev limiter at the launch? would a converter itself be considered a rev limiter? how is nhra going to police which functions of the 8973 are used? that's gonna be a little difficult
bryan

 

http://www.youtube.com/watch?v=dFVvZea3lGk
This is one of our on board shots listen to the 2-step when we're up on the t-brake