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post #1 of 15 (permalink) Old 03-31-2010, 06:40 PM Thread Starter
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Baron's Big Air Kit

I want to install a big air kit on my 900 custom. Has anybody done this and had problems I should know about? I did find one thread that said his Fuel Injection light came on and he doesn't know why. Any tips I can get would be greatly appreciated. Thanks, Mark

2008 vn900c
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post #2 of 15 (permalink) Old 04-01-2010, 07:34 AM
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I want to install a big air kit on my 900 custom. Has anybody done this and had problems I should know about? I did find one thread that said his Fuel Injection light came on and he doesn't know why. Any tips I can get would be greatly appreciated. Thanks, Mark
It was easy. I was the one with the FI light issue. After doing some deeper inspecting i found i had knocked a hose off, put it back on and it works like a charm. Took me about 1.5 hours to install that and my Cobra FI2000. Love it.
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post #3 of 15 (permalink) Old 04-01-2010, 07:47 AM Thread Starter
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You mentioned using a Cobra FI2000, do I have to use a fuel controller with the Big Air Kit?

2008 vn900c
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post #4 of 15 (permalink) Old 04-01-2010, 07:49 AM
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You mentioned using a Cobra FI2000, do I have to use a fuel controller with the Big Air Kit?
From all of the reading I have done, if you have stock pipes with your BAK, you don't need an FI. But, if you have aftermarket or modified stock pipes you are probably running too lean and will need the FI.
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post #5 of 15 (permalink) Old 04-01-2010, 09:19 AM
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So, would debaffled stocks and a BAK require fuel management?
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post #6 of 15 (permalink) Old 04-01-2010, 09:53 AM
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Put one on myself, dead easy to do just take your time, make sure everything that comes off, hoses and sensor, goes back on and check to ensure nothing knocked loose in the process, while you are at it, great time to marble the Reid valve intake hose, slip a standard marble in and stick the hose back to the plug and clamp it down.

Fuel management systems are not required with only one replacement, if you replace both air and exhaust you are highly advised to put on a fuel system, you will not believe how lean it will get, yes I have experience in that area.

IMHO debafeling does not increase the air flow, just sound volume; the catalytic convert is the restriction on the pipe

Ride safe and keep the shiny bits in the air.

John
"I am a modern cowboy, on a steel horse I ride"
09 VN900 Classic
Big 3 +++++
Double Darkside
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post #7 of 15 (permalink) Old 04-01-2010, 10:00 AM
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what is this marble thing??? what does it do?
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post #8 of 15 (permalink) Old 04-01-2010, 10:10 AM
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Quick answer, calms down (does not stop) the popping from the exhaust after you change the exhaust.
If you are not going to change the exhaust (I am betting you will ), do not do it, yes even with the stock exhaust the popping is there but not noticeable, the reid valve allows fresh air into the exhaust port to allow unburned fuel (on deceleration) to ignite in the pipe thus causing a sound most describe as a pop, I call it backfire, very noticeable on muscle cars with straight pipes.

Word of caution, you will not believe the sound volume from the BAK, the first time I started it I thought I had done something wrong, actually I had done something right, put on a BAK, sweet look and sounds good now.

Ride safe.

John
"I am a modern cowboy, on a steel horse I ride"
09 VN900 Classic
Big 3 +++++
Double Darkside

Last edited by Bytehead; 04-01-2010 at 10:44 AM. Reason: bad eyes
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post #9 of 15 (permalink) Old 04-01-2010, 10:41 AM
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So, would debaffled stocks and a BAK require fuel management?
I would think, you are getting a good bit of air flowing there now.
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post #10 of 15 (permalink) Old 04-13-2010, 03:24 AM
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Bak

If you turn this up you can hear the BAK sucking air when I give the throttle a quick flick. Same when I got mine installed thought "whats wrong" lol the bike sounds so different with the BAK upon acceleration.

http://community.cruisercustomizing....965/22960.html
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