Getting cars faster than 200 ?

[ofpdeadeye]

I've started working on a script that enables you to drive faster than 200.
But I've got a problem.
The scripts already starts somethinh like a boost when reaching 180 accelerating to 300
but the problem is to stop without using an UserAction
How can the script react to the action defined in
class manctions.hpp -> ACTION(SlowB) (from commented_config). So that everytime I'm braking in that car the
config calls up my script like booststop.sqs
What should I edit in the car's config file ?
 
Thanx for any help  

                 <-OFPDeadeye->