As stated ,the adjustable MSD chip is what I used when I used a transbrake to run the wheelie thing at the nationals one year.

Word of CAUTION
If you are`nt running enough octane combined with that low RPM limiter it will beat your engine to death.
I have a set of pistons with the top ring lands that look like wafer-springs .
Car started running slower as soon as I started using a 2-step and brake.
Assumed it did`nt like the brake WRONG 2-step caused detonation against the converter