Originally Posted by miltonch76
Having said that, I ask for advice to the ones who actually have a Bazzaz, PIM-2 or DFC installed, especially those who have the yoshimura PIM-2 installed since it seems to be the more cost effective solution.
OK so I'll keep to the point.
I have a DFC and a complete LeoVince system with an end baffle which is modified to give the sound that I want ( louder than stock but capable of being trundled through towns and villages quietly).
The DFC does exactly what I wanted and expected. That is it gives an engine with balanced throttle response throughout the rev range. Flexible bottom end ( 4000 r.p.m.), rewarding and responsive mid-range, top end which can deliver a genuine 90 m.p.h. ( 100 indicated) in favourable conditions. At the same time as giving good fuel consumption figures.
The main way it does this is by slightly tweaking the output from the lambda sensor to influence the closed loop fuelling. It also has mapping adjustments for wide throttle openings/high rpm and 3 potentiometers which can be tweaked for on-the-road adjustments.
In my opinion dyno testing alone cannot get all of the above set up correctly so if you are not happy with spending many hours riding round to find quiet stretches of road and evaluating and tweaking the settings then it is probably not for you. Personally I love it and its something you can't do on a superbike because its impossible to spend a significant amount of time on full throttle!