RE: TPS

["kate lewis" <kate.lewis@xxxxxxxxxxxx>]

Greetings from sunny  ????? England


"You can't look at this FI system so simply.    The reason the surge
happens is
because unburned fuel in the exhaust causes the 02 sensor to deliver a
high
value to the FI computer.   When it gets this high value it runs a
default
lean fuel curve essentially ignoring the value of the TPS.  The flipping
from
the rich curve to the default lean curve makes the bike surge.   If you
ride
it purposely in that "surge zone" you can almost sense this happening.
It's not just a matter of the bike running lean and needing more fuel
poured in."


What your saying here Tom makes a lot of sense, but I've had 2 UK spec
1100gs both with no cat or o2 sensor, but with the co pot. Both have
surged.

All the best
Rich
Notts
uk

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