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Jan 20, 2009 | 06:09 PM

#101

weezo

Tourer

Joined: Apr 2008

Posts: 338

Likes: 3

From: NorCal - Land of Pinkos and Prix

My left muffler looks like it's about 1.75", my right is around 2.25". There's definitely exhaust coming out of both sides.

Jan 20, 2009 | 06:18 PM

#102

Twinrider

Outstanding HDF Member

Joined: Oct 2007

Posts: 2,368

Likes: 14

From: Yokohama

Quote:

Originally Posted by checkers

mpg/performance. local hd dealer says rush mufflers 1.75 baffles only. leave all else stock. anything more leans out too much and o2 sensors are fooled and ecm richens up causing poor mpg.

That probably explains why Dynojet says to disconnect the 02 sensors when attaching the PC.

Jan 20, 2009 | 07:49 PM

#103

fuelmoto

Platinum Sponsor

Joined: Feb 2007

Posts: 7,287

Likes: 4,286

From: Little Chute, WI

Quote:

Originally Posted by Street G

So how does the mufflers work? Is the left muffler a dud, just for looks no sound goes through it. And all the sound goes through the right muffler? What would be the size baffle in the right muffler?

Although the RH muffler is used as the primary muffler, the left muffler also plays an important part in our baffle design. The LH muffler does expel exhaust (although a reduced amount than the right) and the baffle features a unique cone which controls reversion.

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Jan 20, 2009 | 07:55 PM

#104

fuelmoto

Platinum Sponsor

Joined: Feb 2007

Posts: 7,287

Likes: 4,286

From: Little Chute, WI

Quote:

Originally Posted by Twinrider

That probably explains why Dynojet says to disconnect the 02 sensors when attaching the PC.

Actually, the reason is because unless the O2 sensors are bypassed you cannot richen the mixture properly as the EPA mandated O2 sensors will continue to adjust the mixture to 14.7:1 AFR which is way lean.

Jan 20, 2009 | 08:12 PM

#105

Street G

Cruiser

Joined: Jun 2007

Posts: 101

Likes: 0

From: Lansing Kansas

fuel moto.

Thanks Jamie for your explanation.

Jan 21, 2009 | 09:48 AM

#106

tzman

Cruiser

Joined: Jan 2009

Posts: 143

Likes: 0

From: Mesa, AZ

Man, I can hardly wait. I just ordered my mufflers, PC V, and A/C from Keith for my 09 Ultra. It will be about 4 days. ARGH!!! It is going to be awesome.

Jan 21, 2009 | 03:05 PM

#107

103Eagle

Road Master

Joined: Oct 2008

Posts: 793

Likes: 112

So even with the PCV you must disconnect the O2 sensors? Do they stay disconnected all the time or just on initial setup of the PC.

Thanks

Jan 21, 2009 | 03:38 PM

#108

wildeano

Tourer

Joined: Jun 2007

Posts: 250

Likes: 0

From: venice,florida

i do believe that, the only way to use the 02 sensors is if you would use the auto tune from fuel moto or another tuner like thundermax or a couple of other ones..........

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Jan 21, 2009 | 04:39 PM

#109

QIKLUV

Tourer

Joined: Aug 2008

Posts: 369

Likes: 0

From: CLUTE,TX

Quote:

Originally Posted by tzman

Man, I can hardly wait. I just ordered my mufflers, PC V, and A/C from Keith for my 09 Ultra. It will be about 4 days. ARGH!!! It is going to be awesome.

trust me you WILL have a smile on your face.
the fuel milage will suck for about the first tank or untill you quit twisting the trottle so aggressivly

Jan 21, 2009 | 05:15 PM

#110

Watchfuliz

Road Captain

Joined: Aug 2008

Posts: 716

Likes: 10

From: Shreveport,La

Quote:

Originally Posted by QIKLUV

trust me you WILL have a smile on your face.
the fuel milage will suck for about the first tank or untill you quit twisting the trottle so aggressivly

Yep!! all the above here

Maybe for more than one tank in my case LOL.
I like the way it runs and I love it's new sound..........the wife loves the sound, she is still waiting on throttle to ease up......she might have to wait awile longer.

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