Motorcycle tuning with exhaust & power-to-weight ratio?
I bought a new MT-03 this year. It has 30.89 kW and weighs about 155 kg, which is exactly close to the 0.2 kW/kg limit allowed under my A2 license. If I were to make changes to the air filter or exhaust that might gain another 1-2 hp (something goes), and thereby exceed the A2 permissible power-to-weight ratio, that would no longer be legal, right? And when calculating the power-to-weight ratio, the dry weight is used, not the full weight, right?
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The empty weight is taken and this is in the vehicle certificate.
You won’t get out of there without a vote.
If the parts were properly homologated, they do not change the performance by themselves.
A new exhaust and air filter can also cost you just as much power and torque as the machine does not have.
95% of all approved accessories exhaust systems for the motorcycle change the performance or have a negative effect. Especially in modern machines, nothing goes up when it is not matched. The greatest advantage is usually a slightly lighter weight and a different sound.
If your exhaust has an ABE or an E sign then it does not change the performance. Bzw has specified the manufacturer that he does not.
Because otherwise it was a single take-off obligatory part.