Are the Jap YD25 down on power?

[bods]

The advantage is you'd be doing less rpm at 100ks than the ones with the shorter diff...

 

[happy john]

I have driven of 4 of these in stock form and every one has a different form of power delivery. Think mine sits on 2500 at 100kph. I have noticed the more the kms travelled when it loosens up it goes better.

 

[hedgie]

Mine sits a lick under 2500 at 100kph. Spot on with me mates 2012. FFS!