Starting line rpm enhancer for foot brake.

I call it an idle up solenoid. Just like for your ac. Advantage is correct. Same rpm everytime. It is not illegal. There is no electronics involved. Just turn your ac on even though there is no compressor. Modify the bracket holding said solenoid to achieve desired rpm. Imp no different than using a shift light. These are aids to the driver. There is no electronics or computer doing your job. Just like a play back tach is not illegal. Now I have been out of bracket racing for 5 years, but this were the rules then . Idle up solenoid, nothing wrong with it.