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I installed wolfpack last season in my zr6.

Not really sure if I got MORE hp.  I doubt it.  However it did give a much crisper throttle response.  Even the engine sounds more crisp.  And there is a distince difference in sound when the reeds are fully open as compared to only half open.

newf
 

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Put V-force on a stock MachZ. Cant say if it's any better or worse for that fact. I do wish I had my $250.00 back!
 

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Have a set of V-Force waiting to install on my ZR6, I'm just hoping a more crisp throttle.  I only have $155 in them so if it's not an overwhelming change I'm not going to be too disappointed.  I've heard from others you get more change in the higher horsepowers/cc sleds.  Don't know till you try.
 

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on dyno,our mxz 700 showed a 1-2 hp gain with boyesson reeds and 2-3 hp gain with the v-force.the most bang for your buck is the boyesson reeds.the gains were in the mid range not topend.
 

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I installed v-force on my zr500 and it seemed to make a huge difference in throttle response but I don't know if I got anymore hp.  I have been really happy with them so far though.
 

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Like I said above...if i get a crisper/snappier throttle response I'll be happy and feel I got my moneys worth.
 
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Discussion Starter #9
Here is an example.  My buddy has a 96 ZRT600 also.  I just added the VForce this past winter and up until then these sleds were neck and neck.  I mean literally.  I put em on and now I get him out of the hole and at the end of a 660 I have 1.5 sled lengths on him.  He just bought a set for his.
 

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I have the delta v-forces on my 99 zrt600 along with other mods done at the same time very impressive mid range pull now. I now ave a set in the asement waiting to be installed on my 03 zr900 when I get it. Kevin
 

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I would like to get a set of v force reeds for my ZR 600 efi. I already have some modes done so I hope I will see a diff. I would hate to spend the money and be disappointed. Maybe this summer I will get some.
 

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arcticzrt600, did you try the boyesson reeds out?I would say from my experiance that you would have seen similar results out of them as well,for less money.my testing was done on a land and sea dyno and within a half hour of each pull.
 
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Discussion Starter #14
I only tried the Boyessen reeds once on a 76 Rupp Nitro 440, punched .40 over with 38mm carbs.  When I had that motor it was in a Viking chassis that weighed 150 pounds.  I ran it once against my buddies 617 Mach 1 and spanked him badddddd.
 

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Put Boyessen reeds on my 82 SRV years ago and lost 4 SLEDS!
Needless to say, I raised h### and got my money back and 4 sleds!
Another scam at that time for the SRV was a fellow [who is still in business] advertized: For $40.00 I will bore your carb and you WILL gain 6-8 sled lengths and 2-3 miles per gallon guarnteed. That also turned out to be a crock! I lost 6-8 sled lengths and mileage was the same. Raised h### with this guy and recieved some other poor suckers carb that was ready to be bored out. I know this is a little off topic but thought is was a good time to mention it.....


P.S. The only thing that made a REAL improvement for my SRV was a comet clutch [5 sleds]
 
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