So as the title says power gaining mods for RVF400's.

What have you done?
How much did it cost?
How effective was it?



Fire away!

http://mngforce.typepad.com/" onclick="window.open(this.href);return false;


All you need to know...how big are your pockets anyways?

Personally - full exhaust system, sorted carbs, programmable cdi, lost 2 stone, learned to ride faster

CMSMJ1 wrote:learned to ride faster

LMAO @ lost 2 stone! Who would have thought you could save money (eating less) and gain pace on your ride at the same time? Nice.

Yes learn to rider faster very good!

What sort of exhaust have you gone for? Brand wise? Have been looking at Scorpian myself.

http://www.400greybike.info/newforum/vi ... &sk=t&sd=a" onclick="window.open(this.href);return false;


I bought a Hiperform full system - not just a can as this makes a lot of difference.

Had to lose some weight anyways and for a low powered moto the 2 stones made a difference!!

The bikesa re tough to get uber power from without spending lots of cash..

I ported my own heads, removed the cam gear train quietening gears and made sure I had new plugs, carbs that worked and are setup etc.

Takes time and ballache...and you could just go and buy a 1000 if you wanted power..but the V4 is special and so rewarding.

The Hiperform system was 107dB at Cadwell on Sunday...lol