Don Guhl No Longer Tuning Motorcycle ECUs

[the Ferret]

That's the EPA causing this. They have been fining various business that have been tuning, or selling parts that they deem to be for the purpose of circumventing emission controls.
It's a shame because the EPA wants to prevent people from modifying any vehicle that ever had a VIN, even is that vehicle is to be never used on road ever again.
In other words if you want a racecar the vehicle and engine can never of had a VIN...period.
If they are allowed to continue with this path, the entire parts aftermarket industry is doomed and a lot of people will be put out of work.
Billions of dollars will be flushed down the toilet in an instant.

It wouldn't bother me if it put an end to obnoxiously loud exhaust pipes on motorcycles or cars, but so far i haven't read anything about loud aftermarket exhaust pipes no longer being made or sold.

Having attended MotoGP races, those bikes are insanely loud. They could have quiet exhausts and still race. If the mfgs were restricted to X amount of db's, they would just build exhausts to meet that rule and they would still race each other. They race electric bikes which don't have any exhaust noise.

https://www.youtube.com/watch?v=RZ_fOz30TKY