Brutale 1090RR exhaust mods. - MVAgusta.net
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post #1 of 16 (permalink) Old 03-31-2014, 12:44 AM Thread Starter
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Brutale 1090RR exhaust mods.

Hi all, I've been looking at de-cat link pipes to use with the standard mufflers, I can't stand that big ugly cat box. They're all around the $400 mark which is pretty steep, there's a talented guy in Geelong who can make me one for around half that. I was showing him the setup i wanted and it struck me, why not cut the standard system just in front of the flapper valve instead of after, and use a longer link pipe, the flapper must be pretty restrictive. Has anyone done something similar? I'll probably need PCV and autotune i guess, any thoughts?
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post #2 of 16 (permalink) Old 03-31-2014, 06:42 AM
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Most of us, when we mod a bike exhaust, remove the flapper valve control so that the valve stays open all the time.

...or we install a full system that does not have the valve....


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post #3 of 16 (permalink) Old 03-31-2014, 07:29 AM
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The lady has some guns (arms) and she is nice looking (lady and bike). By the way, you don't have to completely remove the tank to remove the cables. Just lift up the back of the tank about 3 inches.
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post #4 of 16 (permalink) Old 03-31-2014, 07:34 AM
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I don't mess with her....much....

She works in an industrial electricity generating venue and is used to dispatching men with her wit.

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post #5 of 16 (permalink) Old 03-31-2014, 04:39 PM
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There do seem to be a few squeeze points at bends and such with the stock headers and along the line of the stock system which seem to be taken care of with most, if not all, of the after market systems. If you're going to take out the flapper and your guy is talented enough, why not just craft the headers as well?

Maybe buy a full exhaust system or even the headers to get measurements for fabricating your own then return it? Seems a bit unethical, but why recreate the wheel?

PS - Chuck, If you got her to do all the wrench work as well, you're a very lucky man

Speed is relative, but fast is fast.

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post #6 of 16 (permalink) Old 03-31-2014, 05:36 PM Thread Starter
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I'm just being cheap I guess, for the sake of a couple hundred bucks it'd flow almost as good as a full system without the exhaust valve restricting things.
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post #7 of 16 (permalink) Old 04-01-2014, 06:18 AM
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David, I am privileged enough to get to be the wrench...she does everything else!

That's her bike. Once, and only once, I suggested she learn to clean and adjust her chain...she's a mechanical engineer after all...she politely reminded me that was my job, unless she should give up cooking, cleaning, stacking and carrying wood, mowing......

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post #8 of 16 (permalink) Old 04-01-2014, 08:31 AM
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I just received and installed the Arrow exhaust. Easy removal and install and worth the money
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post #9 of 16 (permalink) Old 04-01-2014, 11:34 AM
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Quote:
Originally Posted by silentservice703 View Post
Most of us, when we mod a bike exhaust, remove the flapper valve control so that the valve stays open all the time.

...or we install a full system that does not have the valve....


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questions on O2 sensor
on last pix. you didn't put O2 sensor is that ok?
when i change the exhaust with HP corsa i put OEM O2 sensor back in

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post #10 of 16 (permalink) Old 04-01-2014, 01:20 PM
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The O2 sensor is not used in my ECU.

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Call (423) 519-2000 or (423) 253-6213 to reserve your Riverfront Cabin. PM me for The Crow's Nest reservation!!!

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'07 Ducati Monster S4Rs, '07 Ducati Monster 695
2010 Harley Davidson Ultra-Classic Electra-glide CVO FLHTCUSEBLK
'63 Honda C100A Cub
'61 MVA TRA 125
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