Hello Stephane,

Hour 170CDI run about 8200 with the 19x11, we reduce the power at 7700 to pass noise check, at 8200 the engine is around 97dB, and the 20 x 10.5 runs on the 175 at about 7600, and as you stated 30% nitro. CPLR uses 25%nitro.

There is a power difference between the 170DZ and the 170CDI, if the CDI is converted it is almost the same, if the engine came as a CDI then it has the hyper piston wich increases the power, and you can get 500RPM more on the same prop, but the torque changes and the power curve is better, almost flat.

Very good graphs!

Regards