In your message dated: Thu, 31 Jan 2002 16:54:32 GMT,
The pithy ruminations from David Evans on
<Re: Sorry....surging yet again> were:
=> Hi John,
=>
[SNIP!]
=>
=> However, the surging I am experiencing, along with an over sensitive
=> throttle response means that low top mid speed cornering where I want pin
Hmmm...low-top-mid-speed? Maybe you're looking for something that doesn't
exist! :)
=> point throttle control is almost impossible to achieve.
=>
=> If I drop the bike down a gear, the Throttle is so sensitive to my input
=> that I can neither dial in more power nor take any off. The throttle is
=> almost an on-off switch between 3k and 5k rpm. If I go up a gear the engine
=> is struggling to pull the bikes weight around the corners, and I simply
=> can't get going as I would like.
I had a similar feeling on my bike--not the surging, but the almost-binary
throttle below 5k rpm. In my case, I think the main factors were altitude (I
was at 2000m or more) and the throttle body sync.
I'm not saying that the surging isn't there, but you can do some things
apart from the EFI mapping to reduce it. Have you tried:
syncing the throttle bodies
adjusting the throttle cable slack
adjusting the chain slack
cleaning the air filters
Good luck,
Mark
=>
=> Can any one suggest what I might look for in the UK, as an alternative to
=> this injector cleaner by Chevron.
=>
=> Ta.
=>
=> David
--
-----
Mark Bergman Biker, Rock Climber, Unix mechanic, IATSE #1 Stagehand
'94 Yamaha GTS1000A
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