Please help...lost.
OK, I'll try and make this a short story. I've got a 04 1700 with the 3" HK big straights on it. I've been struggling getting the bike dialed in so I decided to take it into our local shop(not a Yamaha shop)and have it tuned in on the
dyno. Now the shop told me I need to put baffles in to create more back pressure. The pipes have the "straight through" baffle. There is no "honey comb" part to this baffle. It looks like a solid piece of pipe. The shop is having problems getting the mid range dialed in. My current setting as best as I can remember are:
main jet at 170, I put the stock
pilot back in, needle on the 4th slot from the top, K&N open air filter. The shop took the pilot down 4 sizes, which cleaned 3000 rmp and above, idle is now on the lean side, and the mid range is still fat. I've been reading about baffles in the forums but nothing talks about back pressure, just noise. Which by the way, my wife rides also, and she complains about how loud my bike is when she rides behind me. Anyway, would the crumb cups create enough/to much back pressue? I don't mind the noise, they tend to leave us alone here in North Dakota. I love this web site. You guys helped me get the bike set up after I bought it. Thanks advance for everyones help.
Wayne.<br><br>Post edited by: whintz, at: 2007/04/17 12:56
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Did you put them on new? I have an '04 with the HK 3 pipes, and the baffle that came inside mine looks like, for the lack of a better description, sort of a serrated-edged vortex. HK sells other baffles to install in your pipes, depending on the desired result. Have you checked their website? Maybe the ones you have are ones they make, maybe not. Let me know what you find out, please! 
