March 2008
News from the Honda
boffins about the new 2008 Fireblade is, that they recommend owners
Do Not change the original exhaust on the new bike.
Well in truth this
isn't anything new Honda have always said that it's advice is
to retain the stock silencer on any of their bikes for emissions,
noise, and better running, except this time they are saying this
about the 2008 Blade, and siting a lose of power as the reason
to not change the end can, and Honda dealers have been advised
that removing the stock exhaust with it's 2 valves will rob the
bike of it's mid range boosting ability and will alter the bikes
power curve.
The standard exhaust
has 2 valves, one electronically operated at 3,800rpm in the lower
gears, and then at 5,600rpm in gears 4 to 6, the second valve
is pressure activated at 7,000rpm and these valves together regulate
the back pressure in the exhaust, and by removing the silencer
it removes both these valves, causing the bikes power curve to
be dramatically changed, say's Dave Hancock from Honda UK.
The first after market
manufacturer is Scorpion in the UK, who have developed a race
can for the 2008 Blade, and they say they have developed the can
to use the bikes standard fueling and also say they have not had
any problems, and have even found a small increase in power.
Well, not to take
anything away from after market exhaust makers, but if you can
imagine the amount of money the big H has at it's disposal for
using in development work in comparison to most after market end
can makers this could just be worth thinking about, before you
spend out £300 or £400 on after market race can.
Just a thought !!!!