Baffle

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jman311
Posts: 8
Joined: Sun May 19, 2013 10:12 pm

Baffle

Postby jman311 » Tue Sep 10, 2013 6:14 pm

I have an Akrapovic slip on installed on my 650R. No Power Commander. How much will performance and/or gas mileage suffer if I take that baffle out of there, not having a PC?
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biketechted
Posts: 376
Joined: Sun Sep 06, 2009 8:22 pm

Re: Baffle

Postby biketechted » Wed Sep 11, 2013 6:56 am

A slight difference maybe noticed with the response from your throttle.
You'll want to remove the snorkles from the air box as well. This will help the engine flow air better by introducing more air into the system. However, with the poor flow going through the small inner diameter of headers, it's unlikely much difference will be noticed.
Likely the only thing you'll notice is the sound.
jman311
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Joined: Sun May 19, 2013 10:12 pm

Re: Baffle

Postby jman311 » Wed Sep 11, 2013 3:30 pm

Snorkel? Is that the tube that comes off the top of the motor, right where a block off plate could be installed?
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biketechted
Posts: 376
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Re: Baffle

Postby biketechted » Sun Sep 15, 2013 5:01 pm

No.
They are the holes in the airbox that blow air directly onto the filter. Its best to remove the tank so you can gain access to the airbox

http://asianconnection71.com/0728AirBoxBaffles.jpg

biketechted wrote:Here is a pic of the velocity stack/snorkel not attached to the airbox:

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Here is a pic of the airbox. The 2 holes on the left are where the "Snorkels" go and the holes on the right lead into the throttle bodies:

Image

If you leave the stock snorkels it helps bottom end. If you totally remove or trim them it helps top end. If you go with the about half the length of stock then they should help out in the middle....according to theory.

Finally here's a pic from and link to the thread about modifying throttle bodies.

http://www.brp650forum.com/phpbb3/viewtopic.php?f=11&t=1494&p=15495&hilit=butterfly#p15495

Image

:moto
electjohn
Posts: 310
Joined: Sun Oct 12, 2008 4:38 pm
Location: North East Ohio

Re: Baffle

Postby electjohn » Mon Sep 16, 2013 4:57 am

I cut the snorkles off right after they enter the box. I left the round part at the entrance only because I don't like sharp ends where air flows, just a personal thing with me. I makes more noise now but I really don't know if it changed anything else.
jman311
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Joined: Sun May 19, 2013 10:12 pm

Re: Baffle

Postby jman311 » Thu Oct 10, 2013 2:08 pm

Oops...I cut the velocity stacks off. Lol. More airbox work for Josh tonight. :newbie
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BRP
Posts: 1925
Joined: Sat Sep 27, 2008 1:37 pm
Location: Southport, North Carolina

Re: Baffle

Postby BRP » Tue Oct 15, 2013 9:06 am

You cut the stacks or removed them?
I have a shitload of stock ones, as well as performance stacks
http://www.blueridgeperformance.net/brpengines.html
Stock are not listed.
jman311
Posts: 8
Joined: Sun May 19, 2013 10:12 pm

Re: Baffle

Postby jman311 » Fri Oct 18, 2013 11:16 am

You cut the stacks or removed them?



Yes. Like a moron, I cut the stacks. Also broke the bolt off in the cylinder head cover while installing my block-off plate. I'm having trouble.
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BRP
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Location: Southport, North Carolina

Re: Baffle

Postby BRP » Fri Oct 18, 2013 1:16 pm

jman311 wrote:
You cut the stacks or removed them?



Yes. Like a moron, I cut the stacks. Also broke the bolt off in the cylinder head cover while installing my block-off plate. I'm having trouble.

Time to get a torque wrench and http://www.lowes.com/Search=bolt+extrac ... extractor#!
jman311
Posts: 8
Joined: Sun May 19, 2013 10:12 pm

Re: Baffle

Postby jman311 » Fri Oct 18, 2013 2:16 pm

Another question...what do I do with the PAIR valve when I get the block off plate on? Do I just keep it plugged in?
XPyrion
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Joined: Wed Sep 19, 2012 8:49 pm

Re: Baffle

Postby XPyrion » Fri Oct 18, 2013 9:07 pm

I removed mine. I have a small write up in rider forums but did not know if you have access so hope this helps. I used a 5/8 and 1/2 I.D. cap. More specifically, I bought a set of Dorman - Help Bypass Caps from Advance Auto. For the plug itself, I used a 22 ohm 1/2W resistor from Radio Shack. I taped it up when complete and zip tied it to the other wires in the area.

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