Aprilia De-restriction

[freestyler_onli]

Not so much the speed/power issue, but how does it affect the sound of the bike/exhaust etc.....


Ta.

[G]

I don't think it should significantly change it. It may get a bit louder as the bike will be able to fully rev out, so more gasses will be shifted through it.

It definitely won't be anywhere near the volume of a race pipe.

[freestyler_onli]

Lovely-ta. Im already pissing off the neighbours- dont want to add to it

[Kickstart]

Hi

Depends how they have restricted it. The official kit is a blanking plate in power valve, and this will quieten the bike down a touch (but not enough that most people would notice).

A lot are "restricted" by just disconnecting the power valve, and connecting it back up again will make no difference to the noise between 2500rpm and 8000rpm (as between those revs it is closed anyway). Below 2500rpm it will be open and will sound slightly louder, but not really a problem at idle. Above those revs it will be noisier, but best off not revving it that hard near home anyway.

The other "restriction" is just the cdi being deliberatly screwed up to cause a large flat spot between 5000 and 6000rpm. This it is there for the noise tests so that the bike will not accelerate when it is tested under the correct proceedure. Not really an issue (as if it did just bog down on you in real life you would just knock it down a few gears anyway).

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing