secodary butterfly ? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 9 Old 01-07-2006, 01:29 PM Thread Starter
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secodary butterfly ?

hi peoples ive got an 03 silver 1000 bought it new very happy with this bike i left the bike stock for the fist year then started to spend some money i currantly have installed techllution [my spelling sucks sorry] fuel meter k&n air filter and the achripovich titanium exhaust did k&n first ran very lean then got techllution way better then got pipes wow what a diffence about 20 lbs makes and the sound [should have done first] i now have a fast v-strom but i have one ? will removing my secondary butterfly valves help with my currant modifications?im very happy with my gains so far does any one have a sugestion
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post #2 of 9 Old 01-20-2006, 03:45 AM
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Re: secodary butterfly ?

Removing it will give more power(=more air intake) on lower gears (1-3) and remove top speed limiter on 6th gear.
post #3 of 9 Old 02-07-2006, 10:17 AM
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Anyone have pictures and instruction for this secondary butterfly removal?
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post #4 of 9 Old 02-11-2006, 03:02 PM
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monster v & 805gregg,

Well you can mark me down under the category: Sold on Secondary Removal.

Yank them suckers ASAP!!

If you want a performance gain that costs nothing (and trust me I am as sceptical as it gets when it comes to "penny-mods") then pull those secondaries immediately. It's not even so much that you are getting "more" HP.. You are simple able to access what's there at all times, all across the RPM band.

Holy cow!

The real gains come on 02-03 DL1000's. I am here to tell you, as a witness, that a Yosh remap (or any type of fuel richening device) and secondary removal will COMPLETELY change the nature of this bike. I've done them one at a time, so I knew what was giving me what response when I made each change.

Yosh box - cured stumbling and most of low-RPM surge, not all of it. Also cost me a couple MPG as the bike runs richer at idle, mid, and low throttle. But not bad, maybe 1-3 MPG.

Secondary removal - HOLY @#$&*@! No, I'm serious. It's that much of a difference, and my bike didn't run bad before. The closest I can relate it to, is when your chain and sprockets are shot... you get that tugging and surging that makes you feel as though your bike is working against itself all the time. I got the same feeling, in relation to the fuel-air delivery, before removing the secondaries. Now, not only do I not feel that "drag" in the top end approaching redline anymore, but the throttle response is smoother and more accurate throughout the entire range. I know some folks have reported a "lag" when slamming the throttle open. Well, I'm not quite that ham-fisted on my bike. A slight change in your throttle habits from a wide-open *chop* to a very quick roll on... hehe.. you will be fighting to keep your front wheel on the ground! Top end is sick, just flat sick... 1, 2, 3rd gears are so much smoother, it's almost like riding an I4. I now have control of my throttle again!! I had thought it was just maybe the nature of the bike, but no it's those damn secondaries. What a great name, because they "second guess" everything you do with your right hand!! Give ME control of my throttle, thank you very much Suzuki. The damn ECU has no idea what's on the road ahead or what I'm trying to do with my bike at any given time.

Maybe if you are a new rider, and this is your first street bike, they might be of some use. But if you have any real riding experience, and a throttle hand that knows more positions that "WIDE ASS OPEN" and "SHUT", then the difference is astounding.

I feel like I just got a new bike.

BEST.

MOD.

EVER.

Actually, this shouldn't even be considered a mod. It should be "essential maintenance". Suzuki really crippled these engines in the DL. I feel like I've unleashed the TL1000S that's bee hiding inside my 'Strom!


Removal is easy:

1) Remove the tank. And all that darn plastic around it.

2) Remove air filter cover and air filter.

3) Observe butterfly valves under filter.

4) Carefully (using the correct size screwdriver, the one in the factory toolkit is a perfect match) remove those 4 philips screws. You may want to take a very small rag and stuff it under your valves to avoid metal shavings or any other crud getting in there. If you have a magnetized bit, or an extendable magnetic screw retriever, now is the time to use it. DO NOT drop those screws down the intake. And for god's sake, please do not touch your throttle until you are done and vacuumed up.

5) After the screws are removed, rotate the valve up, slide it out from the rod it was screwed into.

6) Remove the rags, and use a shop vac to suck up any debris that may have gotten down there. It's your intake. Make sure it's clean. Please.

7) Put the secondary valves and screws in a ziploc baggie, and store them safely wherever you keep useless parts you'll NEVER use again, but don't want to get rid of "just in case"

8 ) Reassemble your bike and go for a ride. I suggest you leave plenty of time for this crucial step, because you will NOT want to come back home.

9) When you get home, change your underwear. :P Then pass the word among other Strommers about this essential modification.

10) Beat yourself about the head for not listening to the wise, wise folks on every Strom forum who have said for years that this is the single best mod you can do to your bike.

11) Get back on your Strom and ride it some more!!!

[SIGPIC][/SIGPIC][I][SIZE=1][SIZE=3][SIZE=3][B]
V-Strom - embarrassing squids since 2002.[/B][/SIZE][/SIZE]

[/SIZE][/I][FONT=Georgia]DL1000K2 #938
[SIZE=1][COLOR=Navy][B][SIZE=2]Blue, of course!!

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R.I.P Jason. You will be missed.[/B][/I][/SIZE][/FONT]
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post #5 of 9 Old 02-11-2006, 04:03 PM
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photos?

Is this job posted with photos anywhere? I would love to do it, but I am a bit of a Luddite.

03 DL1000 (Named Suki) SOLD!
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post #6 of 9 Old 02-11-2006, 04:27 PM
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Here are some pics on another thread/site.

Not much to see really.. This has to be the easiest mod ever.

http://11109.rapidforum.com/topic=103976760002

4 screws. Just be careful not to strip them, they are soft metal and stuck in there good with loctite.

[SIGPIC][/SIGPIC][I][SIZE=1][SIZE=3][SIZE=3][B]
V-Strom - embarrassing squids since 2002.[/B][/SIZE][/SIZE]

[/SIZE][/I][FONT=Georgia]DL1000K2 #938
[SIZE=1][COLOR=Navy][B][SIZE=2]Blue, of course!!

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R.I.P Jason. You will be missed.[/B][/I][/SIZE][/FONT]
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post #7 of 9 Old 02-15-2006, 09:15 AM
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Wow I have never heard of this mod. I cant wait to try it. Can it be done with out a remap. My bike is totaly stock. Thanks for the help
post #8 of 9 Old 02-16-2006, 11:27 AM
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Quote:
Originally Posted by Onenutmak
Wow I have never heard of this mod. I cant wait to try it. Can it be done with out a remap. My bike is totaly stock. Thanks for the help
If you're running a 1k you can. I don't recall any 650 riders that have done it, or if they have it didn't make much difference. I did it on my K3, and I have the PCIIIusb with accerator pump feature. I can whack the throttle open at any speed/rpm and no lag. Some riders said this cured their lean stumble problem, some said it just changed how it stumbled.

In any event when I run through the gears, whether near or 1-2k below redline, I've gone way past the old top speed barrier by the time it hits 5th.

It's free, go ahead and do it!

Jerry
post #9 of 9 Old 02-22-2006, 08:22 PM
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does this help a 650

can anybody report a secondary butterfly removal improvement on the dl650? i want to do mine if possible ,is the intake the same as the big 1000 ? if i do this ,will i need a pc111 or any thing else.what about a TRE from ivans?is that a trick or ?
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