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D&D claims 155-158 hp with their twin pipes on the 800. Keep in mind, twin pipes are not necessarily just a bolt on and go item...clutching and jetting needs to be matched and then there is the noise issue as well...Marc
 

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I had a set on my '02 ZR 800 and we got them to run with no burndowns. You need to be sure that you have the jetting and carb needles set properly or you could burn down a piston and cylinder under the right conditions. Trust me I have done it. These pipes are for the guy who is a tuner. Do your home work and be sure you understand what is required to use them. If you want more performance without the reliability issues try a single pipe with air box mods and a clutch kit. Oh, by the way the twins are quieter than the single I run now. It's the can that makes the noise difference. Arnie
 

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My Buddy bought a 2001 ZR 800 same time as I did. He bought the D&D kit. (twin pipes, reeds, airbox, timing key) and the D&D clutch kit. I kept miine stock. He burned down his motor the first year because D&D gave him the wrong jets. Last year he had to fuss with his clutching constantly and still couldn't get it right. It does sound good but when we raced, we were either even or I took him. I don't think D&D got it right that year. May be better now. I think if I was spending the $$$$ I would look elsewhere.

Just my 2¢
 

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Discussion Starter · #6 ·
my 600 has pipes reeds chip and its clutched, but with the quiet can silencer its sound almost stock, probably a little louder. My dad is runnung a D&D power pack (something like that) silencer so noice is already very high, as for D&D i think they seem to be much better than my black magic junk, we arn't afraid to mess with the jets, or clutches, i just wanted to know how big the increase really was. by the way he is already clutched by D&D...

thanks for the info guys, for 100-200 buck i think the pipes will be pretty good

-mike
 

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ooops. I would say to the real ?, I seem to dislike twin pipes on the 8-1000 twin set-ups. They are finicky and are not even close to be as nice and torquey on the trail...my opinion...
 

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i have a speedwerx single pipe ceramic coated and silencer and reeds, spacers,gears,420 jets,clutch kit, air box and it runs great. i would take the single speedwerx over d and d or psi anyday. my friend has psi and they are loud and they have no power, the d and d coating is flacking on his twins and he spent about 950 for pipes and silencers
 

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I just got MyZR700 with D&D twins running.
BTW it is Quieter than the srock with the MBRP silencer.
And you are right. The power band is narrow and higher on mine at least. Clutching it wasn't too bad.
BUT the setup is a bit steep for trails. On mine I am running 4700 engage and 8100 tops.
Jetting wasn't too bad either. Follow D&D's step to start. BUT watch you wash and plugs. I ended up tow steps down fron their recommend.
 
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