AIS Removal

This shows the hole where the AIS unit used to be and the plug that was connected to it.
I guess its ok to just zip tie this plug somewhare out of the way?


This bugger did NOT want to come off!!


Krabill's kit is on the way...

I just black-taped it and tug it somewhere out of view

why would i do this? does changing the head pipe disable the ais?

The AIS introduce air to burn the left-over fuel, so you will have a cleaner burning process...

When you change your exhaust (may it be head pipe alone or full system), the AIS is not affected...

I removed mine basically just to clean up the outline of the bike, as well as minimising the popping when decelerating...

Undo this zip tie right here and use it to capture that loose end.

Follow the large hose from the AIS unit, over the head and around to the left side


Cap it with the part supplied with Krabill's kit


Remove metal pipe between AIS unit and cylinder



Save your metal gasket and re-use it behind Krabill's block-off plate


here is a diagram of the AIS system so you can visualize what you are removing

I took my AIS off the other day. I cut the metal tube off and welded up the hole and bolted it back on. I'll take a photo of it when I get home and post it up. Saves about 17oz of weight

Here's the photo of mine removed with the welded up plate. Not the prettiest, but you really gotta look hard to even see it, and it gave me an excuse to break out the Miller-matic.

Machtig wrote:

Here's the photo of mine removed with the welded up plate. Not the prettiest, but you really gotta look hard to even see it, and it gave me an excuse to break out the Miller-matic.

Dude! What is with that glob of RTV around your exhaust? Does it leak that bad? No offense, but it seems like overkill.

It's his Orange Meanie.

SheWolf wrote:

It's his Orange Meanie.

Its for the FMF header. The instructions said to use some. I suppose I went overboard, but heck, it doesn't leak.

AIS is gone!!

Made the cover out of some scrap aluminum I had kicking around, and used the metal gasket that was in the hole already.

I now have a yellow knob.

SheWolf wrote:

...
I now have a yellow knob.

Somehow I was envisioning you would find a purple one.


Has anyone removed the the AIS and still have the stock exhaust?
If so how is it running?

I had heard elsewhere that there would be off-idle stumbling by removing the AIS and retaining the stock exhaust.
I haven't replaced my exhaust because A. I haven't decided on which one is quietest and B. I'm cheap!

I have full stock exhaust. So far, nothing. BigDog is running the same setup; stock exhaust. He's got more miles on his and so far he hasn't had a problem, so he told me.

If I could find a purple knob for my boy, he would have one.

what did you guys do with the vent hose on the left side of the tank? any one have a picture? and does it drain when you fill your tank all the way up?

I never touched any hose except the one coming off the AIS to the airbox. One thing I have noticed is the little pop on decel is gone.

so the hose on the left of the tank is kept on for the vent and over flow? or does your tank not have that? you know i think my tank is different then yours, california crap! i have more hoses.

drater wrote:

so the hose on the left of the tank is kept on for the vent and over flow? or does your tank not have that? you know i think my tank is different then yours, california crap! i have more hoses.

yours is the cali model am I right?

only the cali model has the vent hose

yeah your right, cali model. what do i do with all these hoses?

I am sorry... but I can't help you with that...

mine is not the cali model so I don't have those hoses running around

yep! i know, can you believe it? i just have to make along vent hose but still not sure how much is going to be leaking out when the tank is full, cali crap you can call it.

You could make a big bong out of it....

and you are a fire warden it does have a good huca hose

AIS...Amazing Intoxicating Smoke.