Apness not sure about your pipe design. But I have now got a 4-2-1 fitted. Stainless so it won't rot and it weighs over 5kgs less. Bike feels alot lighter to ride, if there's such a thing. I didn't need to re-jet as like I've said b4, Steve @ K2 said bikes are set up a bit rich when 1st made anyway. All I can say is the boost now goes even quicker. There's no flat spot at all, if anything its got more low down grunt than b4. Pipes are wider so don't strangle motor like b4. But if you go for one of these systems, be warned. There's no sound deafening exup and, at mo I've er not got a thingy in the end can. And its LOUD.

But it sounds kin great at er a very high speed.

Plus when I road tested the sytem I found it very, very easy to erm (hope wife don't read this), get to at least 20mph+ in a similar distance on a certain road somewhere about.

So go get one. You know you want to. Otherwise we'll have to do another ride out, and you can see what mine goes like compared to yours.

Anyway blame YZF Kev its all his fault. Cheers Kev for the advice.
