Does it really matter? - Page 2 - Yamaha R6 Forum: YZF-R6 Forums
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post #11 of 12 (permalink) Old 12-12-2012, 06:21 PM
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I don't even know what the question is bro.

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Zeus Armor crash cage, sub-cage, stunt stay, subframe brace, R1 rectifier mod. ATC steel subframe & ATC 12 bar. Runman big rotor HB setup with r6 monoblock calipers. Stunter-X res clamp hose kit. Dented gas tank with HT moto grip. Kleen air mod. GPR V1 steering damper. Brembo RCS 19. SS brake lines. BMC air filter. ATC adjustable clip ons. Brembo 16x18 HB. 05 R1 front forks. 06 FZ-6 rear rotor. NGK plugs. DCP radiator cage. LP gas cap. Secondary radiator fan switch setup. HT Moto Rear Seat. Leo Vince CBR 250 exhaust. Naarden shark fin. 14/54t 520 gearing. Intergrated rear turn signals. Engine Ice. Shaved wind screen.
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post #12 of 12 (permalink) Old 12-13-2012, 02:40 PM
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Re: Does it really matter?

Quote:
Originally Posted by robthezombie View Post
Id like to be able to learn this machine so I understand how it runs and runs most efficintly. So ive been reading around on here about back pressure and how it affects the bike. Im not a mechanic so I dont fully understand the whole issue. So I would like to propose some cases and hear what you think. Does the muffler, honeycomb, or both add to the backpressure?
1. Megaphone exhaust (Hotbodies) with a y-pipe and cats removed.
2. Hotbodies exhaust with y-pipe, but honeycomb still in.
With those two set ups would it be wiser to keep the cat to have some backpressure or does it matter?
I know this exhaust basically has no back pressure so I used it.
I appreciate anyones help trying to figure this out.
First of all, coming from someone who did it before and learned their lesson, if you run a megaphone or any type of hollow pipe with no cats/muffler, its going to be the most obnoxiously loud thing youve ever heard. Probably won't even let you run it on a track, and cops (in Pensacola/Panama city anyway) will pull you over in a heartbeat. BS that harley's can be as loud as they want but god forbid there's a loud rocket...

I had a custom midpipe welded in with a Toce slipon, and when I went to get it dyno'd, I lost 12hp from the previous setup. I then found out that the shop screwed up and changed the size of the pipe coming off the header, so I don't know 100% what it would be like assuming you bought a legit midpipe.

I'm running a MJS midpipe w/a gytr slipon as a temp fix until I get back from the desert and get my full system, but I dyno'd 116 last time I was on, so I don't think the backpressure is really a terrible issue..

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