i emailed eric at mrHP about the end cap and jets and he said the best dyno he ran wa with the stock jets?

 

That could be. My first slip on pipe for my DS was a White Bro's R4. It required no jet changes either.

 

if that is what he said it should be, it wouldn't suprise me i never ran much over the stock jet on the stage 2 seemed 170 worked good. and that was with a full pipe.

 

I can't speak for Mr. HP, but from my experience.... I have the Mod Quad end cap which I hear (I am not saying it is or isn't) that it is the same dimensions as the Mr. Hp one and my DS wouldn't run right without re-jetting. It sputtered and popped when I hit the gas after installing the end cap until I went to a 175 main (mikuni) jet. Now it has tons more power and torque and runs awesome. My altitude is 50 feet above sea level. I didn't have to change the pilot jet at all. And it sounds awesome ! It's not as loud as the Raptors with the White Bros, which is a good thing as they are too loud, but you can hear it growl when I give it gas. Another point of interest is that I got my cap off e-bay for $45.00 plus $5.00 shipping and I got my jet locally for under $3.00. That is alot better than $125.00. In fact I recently saw a Mod Quad on e-bay for $35.00 and $6.00 shipping if anyone else is interested. Either way it's a must to get the DS to perform.

 

looks like it is starting, let eric do all the money work then go with some other product then try and get his info. seems to happen every time.

 

You notice that too [img]i/expressions/face-icon-small-shocked.gif[/img]

 

I agree - Its probably a good thing to ask support from the one who you buy it from.

 

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For what it is worth ... At 6,000 ft to 10,000 ft altitude a stock DS with a K&N and an HMF slip-on runs best with the stock pilot jet, needle clip moved one position richer than stock, and the stock main jet.

 

Me too!

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