secondary butterfly valve removal - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 11 Old 07-18-2006, 05:16 PM Thread Starter
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secondary butterfly valve removal

hey peoples how is ya all i finaly did it i took the secondaries out man it made a big diffrence all around but mostly right off the start and my throttle response is incredable my top speed also went from 220km to 235 easy im glad i did this mod i also have a tfi box k&n filter and achripovik slipons
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post #2 of 11 Old 07-18-2006, 05:49 PM
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I was impressed with the improved throttle response on mine too when I pulled off the secondaries. Don't know how bad I want to test the max speed though. That asphalt whips past pretty good, even at normal highway speeds. :shock:

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post #3 of 11 Old 07-18-2006, 11:26 PM
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It may be the best "free" mod that can be performed on the Strom! Mine aint NEVER going back in!!!

BRIAN "GO Buckeyes, GO Wildcats"!

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post #4 of 11 Old 07-19-2006, 06:49 PM
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Then why did they put it in in the first place?
post #5 of 11 Old 07-19-2006, 09:25 PM
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Quote:
Originally Posted by Ben1050
Then why did they put it in in the first place?


EPA.

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post #6 of 11 Old 07-20-2006, 09:05 AM
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Quote:
Originally Posted by Ben1050
Then why did they put it in in the first place?
I think it has to do with intake velocities. When you whack the throttle open, the secondary butterflies respond slower, maintaining the velocity of the intake air and ensuring proper fuel atomization. So, in theory, they should make the bike run better (which many of us disagree with) and it probably helps with emissions.

I think they have also set them up to act as a limiter for the top end. The secondaries will not remain fully open in top gear, limiting intake capacity and maximum speed. Some guys have posted about increasing their top speed when they remove them.

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post #7 of 11 Old 07-20-2006, 07:58 PM
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any negatives

Wondering; how do find slow running and throttle control with the secondaries removed? Also did you have to remove the throttle bodies to remove the butter flies?

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post #8 of 11 Old 07-20-2006, 08:45 PM
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Low speed throttle is very responsive, some say too rsponsive. I like it.

No need to take off the throttle bodies. Once you get inside the airbox, like removing the air filter, the secondaries are right there.

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post #9 of 11 Old 07-21-2006, 12:37 AM
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I did the mod on my K5 650 and didnt think it really made any difference other than more intake noise. Infact, the low speed response seemed to be slightly less. I put the plates back in for good.

Cheers

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post #10 of 11 Old 07-21-2006, 06:07 PM
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Quote:
Originally Posted by rcacs
I did the mod on my K5 650 and didnt think it really made any difference other than more intake noise. Infact, the low speed response seemed to be slightly less. I put the plates back in for good.

Cheers
You can't get any more power out of the Wee's, or make them run better. :lol: They are simply.....add gas and go!!!! It isn't wishful thinking, that my Strom runs better without the butterflies.

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