2006 - 2008 Yamaha FZ-1 Page
This bike has lazy
throttle response, and also the typical abrupt on/off throttle transition
problem that all of todays EFI bikes have.
This is due to "fuel cut".....
"Fuel cut" happens when you close the throttle anytime above
4500 rpm (on this bike), the fuel injectors will stop.....
Upon re-application of the throttle, there is a delay before the system
will start back up and re-wet the intake tract and combustion chamber.....
the rider feels this as a delay and jerky response from closed throttle....
especially while leaned over in a turn.
In addition to the response problem, there is also one loud bang from
out the exhaust that is usually heard when re-applying the throttle, after
you change the exhaust.
Under these conditions, throttle response is much less than precise.
I have designed the
FCE (fuel cut eliminator - $195.00) for this bike, and as a result there
is a marked difference as to how much better this bike responds under
any riding condition.... and as the first dyno chart shows, more midrange
power between 6000 & 9000 rpm.
The product will
add as much as 10hp due to the sub-throttles opening at a faster rate
as well as preventing the EFI system from shutting off under decel conditions.
Combined with proper fuel and ignition mapping, this bike is transformed
from a precarious ride under aggressive riding conditions to a perfectly
smooth and predictable ride under any riding condition.
This
product will make a marked improvement in any year fuel injected
Yamaha FZ-1 (2006 - 2008) because it eliminates the root cause of the
abrupt throttle response - "Fuel Cut" and it also offers the
advantage of a faster opening rate of the sub-throttles.... regardless
of what the factory may have done to improve this model.
The fact is... as long as there is "fuel cut", the problem will
remain.
(Fuel Cut is a federal
emissions regulation requirement for all EFI vehicles sold in the USA
since 1980...... NO VEHICLES ARE EXEMPT !! )
All Stock 2006 FZ-1
vs. Same with Ivan's FCE
Adding a slip-on
exhaust with the FCE and PC3 with proper mapping will wake this bike up
considerably....
All stock w/FCE
vs. Slip-on exhaust and FCE, PC3 w/Ivan's mapping
Adding an ignition
module will sharpen part throttle response as well as add some power to
full throttle.... in addition the bike will run noticably cooler and will
return better fuel economy.
Slip-on exhaust
and FCE, PC3 w/Ivan's mapping vs.
Same with ignition module
Modifying the airbox
and adding a race type air filter will yield improvements starting at
4200 rpm with the proper fuel map.
Slip-on exhaust
and FCE, PC3 & IM w/Ivan's mapping vs.
Same w/airbox mod and race filter.
Still not satisfied
with the throttle response, and wanting the bike to feel like an instantly
responding 1000cc bike (like it should be), I designed these new replacement
sub-throttle plates.... These plates will put back the response that you
are after.... more power at any throttle opening and dramatically better
response at part-throttle.
All of the above
mods vs. same with our sub-throttle plates
Just for comparision......
All stock vs.
all above mods
Full exhaust system
results to follow soon - Stay Tuned !!
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