Bonneville America Forums Forums Technical Forums Performance Mods air injection removal

Im looking for info from those who have done this and what gains or benefits does it bring to the bike.I was told that the removal of this will decrease the popping on decelleration.I understand that removal of the tps does this as well.Any help would be appreciated.

I removed the AI to reduce the discolouration of the headers. Popping on decel was reduced somewhat but not completely. No real performance gains with the removal. It does make pulling the spark plugs a lot easier with the tubes removed from the head.

Thank you.Is it a difficult operation involving any special tools?

Clem, removing the A1 is probably the simplest of all changes. You will just need the correct sized spanner (you do have spanner don't you) and follow the instructions.

Even if you are not too experienced on the tools and you want to clarify something, just get back on here and ask. You will always get a reply and you will not have any difficulties with this one.

Just do it and after a while you will probably find yourself feeling more confident and like many of us, start doing more technically orientated changes. Anyway, its fun and great to see the improvements to your bike.

I would also suggest you look at buying a Triumph Manual or at the very least a Haynes.

btw, I did try to pm you but you have your settings such that you're not accepting them. I was going to mention something that I'm sure you would be happy about.

staffo

I started doing the removal...

but got stuck on those little clamps holding the chrome part of the tube next to the spark plug and the black elbow thingy. How do I loosen them up?

Since I was pressed for time yesterday, I just pulled out on the tubes and plugged them so no air will pass. Call it the cheap way of doing things...

As soon as I figure out how to unclamp those things (help please!) I should be able to remove more!

On the other hand, everything looks stock with the benefits of AI unplugged!

I tried to post this last night, but high winds in NJ lost my hotel internet connection.
http://www.triumph-bonneville.com/images/AI.pdf
It's been many years, but I remember just twisting those clamps off with a pair of pliars. I saved everything in case it ever needs to be reinstalled.

Staffo:I fixed the pm thing.
to all:thx for the info.I do believe Ill get at this soon.

Hey guy's,

Doug here 1st post.. I have a 2009 America and am in the process of removing the AI as I type this.
In the directions it mentions removing the vacum hose from the reed valve to one of the carburettor manifold vacum points & cover the nipple on the manifold with cap supplied.
This has me kinda confused because on the 2009 I know there is fuel injection.. I have two vacum lines coming from the (dummy) carburettors.. but they do not come right from the reed valve.. they go from the carburettors to two points at the top left frame of the bike into two differnt receivers.
Any advice on this one? should one of these be plugged & would there be something different that needs to be done on this new model?
Thanks
Doug

Not sure what effect the AI removal has on the EFI bikes as far as the pipes bluing. There is and ox sensor in the exhaust so it may not have the same effect as the carbed models. The one benefit I can see is that it makes access to the plugs much easier. Since it is EFI I imagine you do need to "trick" the bike into thinking the sensor is still there or compensate in the mapping.

Here is a thread discussing AI removal on an EFI. http://www.bonnevilleamerica.com/forums/...true#Post373983

Haven't found the one with pics and instructions on bypassing the O2 with a homemade resistor, probably on Rat.net.

Here is an extensive thread on removing the AI on EFI models.

Unfortunately Biker7's photo links in the above forum thread have broken. Hopefully he may restore these links but he has been absent from the forum for a couple of weeks.

The advantages of removing the AI from EFI models may include:
1. Cooler running.
2. Less popping on decell.
3. Cleaner aesthetics.
4. Easier plug access.
5. Reduced/eliminated snatchy throttle syndrome

I believe that if you remove the AI you should also disable the O2 sensor. I have my O2 disabled in the ECM by using Tuneboy. I don't know the details of other methods.

I have not yet removed/disabled my AI because of I don't want to void the warranty and because I am not yet quite convinced the ECM system will perform the same or better without it. Reading the above RAT thread shows that others more knowledgeable than me are still figuring it out and debating the issue.

In the meantime, for me, turning the O2 system off has reduced the snatchy throttle and also reduced the pooping - both of which occur on EFI bikes at zero throttle (the only time the closed loop O2 system operates).