Catalytic converters and AI and Lambda sensors removal in 2008 Speedmaster

See an earlier thread on this page titled -

Oxygen lambda o2 sensor kit

it answers most of your question , I've got slash cut pipes on mine (2008 America) - they were on when I bought it - I did the lambda sensor conversion & the AI conversion (bunging up airbox etc etc ) and didn't need to remap the bike - it now runs loads better , in fact its perfect - I can only assume the remap was done when the slash cut pipes were put on .

 

Again if you look at the TTP site under breathe and also the airbox baffle removal, it should explain things.

 

Hi Alex, to answer your question No. 2 - yes you can install any exhaust if you are prepared to re-map the ECU to match the mods, to ensure the fuelling is in the correct ratio. Obvious with a bike as stylish as yours, aesthetics plays a part as well.

I'm assuming you have a clear reason why you want to get rid of AI and O² sensors - don't forget the airbox mods to help the bike breath to it's optimum.

 

Not a silly question! I beleive You can run without the AI without remap but you will have to use something like tune ecu
And suitable cable to "tell" the ecu that they are still there, I beleive the lambda removal will need remap due to it regulating mixture. BIGLAD has written a lot about this so he will put you right.

 

Hi Alex, re your question about do you need a re-map with cocktail shakers straight away, or can you run your bike with them but without a remap.

If it were me and I was only - in the short term - going to add the shakers,I wouldn't change anything else. I would the AI and the O² sensors in place. It's quite complicated to explain but in the short term just change your pipes and enjoy the bigger sound.

Do the full remap and at that time remove the snorkle, airbox baffle plate, get a 'Breath' cover plate, put in a DNA cotton air filter, remove the O² sensors and get a map that will take into account all these mods, at one go.

 

My personal experience of this was that I bought my bike with short pipes on (as in pic) - but everything else was standard & in place (although I since believe the ecu may have been remapped when the shorter silencers were fitted) .
The bike ran okay , but did used to pop and bang quite lot on shutdown of the throttle.
I then fitted a K&N air filter when I gave the bike a full service (this made no apparent difference)
I then removed the o2 sensors from the downpipes & blanked the connections (this made the bike pop & bang more than ever.
I then did the AI conversion - removing all the plumbing for the air return system & blocking the hole in the airbox (at this point , I expected the engine management light to come on but it didn't, indicating that a remap may have already taken place)
The popping & banging stopped , the bike ran smoother , acceleration improved , it sounded slightly quieter , and is now running really well , plug colour is spot on whereas before it was running a little too lean & the down pipes aren't blueing anymore (one was starting to more than the other) . I also think the bike is using slightly less fuel .

 

Your best bet to get a clear answer is to contact TTP here and speak to someone direct , they are a friendly lot so don't be shy. Let us know the outcome

 

you will find it all worth it I am sure. have you got your OBD-2-USB cable and blanking bolts? Look here for AI removal hints and tips and here for any bits. since I removed my AI it has either been raining or I have been at wor.... cough cough! but for the little 30 min run I did it certainly ran a lot smoother especially at low speeds.
Another thing (this won't cost you anything) Download "tune ecu" so that you can copy your old map just incase, as I think the TTP map comes integrated in its own tune programme and I cant remember seeing the option to save the map that's on the bike already. When you've done it all you will realise how easy it is and how worthwhile. Good Luck

 

ideally its got to be loud enough to scare small kids & old women coming out of the bingo hall on the high street , you'll know when you've got it about right though , when you go past a posh countryside farm cafe & well to do ladies start shaking their heads & tutting

 

That error report is normal and clearing it will sort it. Hope you get her out tomorrow/today I'm sure you'll be pleased

 

Great news, when I did all this my cold start changed. Instead of having to pull the cold start knob out fully I only had to pull it out half way, still need a little bit to start when warm too. Let her warm up for a while before heading off. It sets the closed throttle position.