Re: [ST] K & N Filter requires a new tune?

[John H Seltzer <jhseltzer@xxxxxxxxx>]

Al,

Not necessairly. The computer has the ability to coorect for small 
chanes. However, if you change the filter and exhaust you should have 
the perfomance tune installed.

The exact same thing happened to me at the 6,000 mile service. I also 
have a 2000 ST. The bike ran great up to 6000 miles. The motor was 
execptional. But, after the 6000 mile checkup I started having the same 
problem you're experiencing. After going back to the dealer several 
times he finally changed the idle air valve stepper motor. The stalling 
stopped, but the surging continues and that wonderful low end power off 
idle is gone. Some day I'm going to try a power commander  to change the 
fuel map.

jhs

Al Garvin wrote:

>I had my bike (2000 ST) in for 6K service a couple of weeks ago. Standard 6K
>service things were done. I had them install a K & N air filter. Nothing on
>the paperwork says anything about any change in the tune that was originally
>loaded into the computer. But now I have a definate flat spot just off idle.
>This bike used to pull away from a complete stop in 1st gear with no bogging
>or excessive reving. Now I have killed the engine several times pulling away
>from a stop. I need to rev it to 2.5 to 3K to pull away. It seems to have
>this flat spot at 1.5 to 2.5 K. I have also noticed a small amout of surging
>at low speeds that wasn't there before. The bike runs strong and does not
>miss or surge at higher RPMs.
>
>So my question is does changing the air filter to a K & N require a new tune
>to be loaded?
>Al
>
>
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- -- 
John H. Seltzer
2906 Alvarado Drive
Bellingham  WA 98226
360647-7702
jhseltzer@xxxxxxxxx




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