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Old 05-06-2013, 11:41 PM   #4
Apple Jam
Forest Flyer
 
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Joined: Aug 2007
Location: Mt Hood mud flow
Oddometer: 6,176
So....since this SAS subject is up on the table...

I did my SAS removal at the same time I replaced some rather dirty fuel filters. I have noticed significant change for the worse in the famed jerky throttle at low revs. Especially annoying coming off 2-3k off-road.

I've ridden this bike through 50k miles and 2 other filter set changes, and I never remember it being this bad. But I never off-roaded so much as the last two years, so it could be my imagination, but......

Just a thought......I blamed the fresh fuel filters originally,...could this air injection be smoothing out throttle at low rpm? I mean, it's purpose is to heat the cats at idle/warmup....was this, just maybe, causing more backpressure and lowering power output at very low rpm?

Edit: 07 -990FI
Also, kinda curious.....What opens the reed valves on the heads, vacuum from exhaust, or pressure from the SAS pump?
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"got no problem with keeping truly roadless areas as wild....
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Apple Jam screwed with this post 05-07-2013 at 12:04 AM
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