Secondary Air Injection Removal

Good gracious Capt.
My bikes only done 9k miles and runs really well.
I think at this stage I'll probably just remove the SAI and turn off the signal on the Tuneecu

 

All this hard work of disecting everyone does, I still just don't get it as mine runs superb with it all connected with my Motad's, popping nicely on the overrun and it's stinking quick too

 

I obviously don't know for sure Eric, but your bike runs suspiciously well for an 865 EFi Bonny - I suspect Motad did something to it (map tuning maybe) as it just runs too well.

 

Mine runs really well with all the standard OEM engine and exhaust parts fitted.
This is why I am undecided on removing the SAI
Popping, I can live with that.
Bluing of the pipes, I can live with that.
Performance, perfectly good at all speeds.
If it wasn't as good after removal, I couldn't live with that!
Verdict, leave well alone for the time being.

 

I'm putting my main ride (modified MT01) to bed for this summer and my Bonne will take her place. She's pretty much the same as your but will be doing some mods to help her breath a bit better etc in the next 4 to 6 weeks and can report my findings to help you decide what route you should go down

 

Hi Mick, don't quite understand. I thought there was a problem that you were trying to cure by removing the SAI, but after the above comments there doesn't seem to be a problem to solve ?

 

Nope! heh heh heh

 

Hi Mick, the cheapest mods for the biggest gains, are snorkel removal and baffling removed. With a hi-flo less restrictive air filter and open exhausts you gain good midrange torque and some extra ponies too.

 

Hi biglad,
No problem other than the oft reported 'popping' on deceleration and bluing of the pipes, both of which I can live with.
Periodically someone will raise the SAI issue as in this thread Steve Lovatt.
That then makes me revisit the modification which I cannot bring myself to do because the bike runs nicely through all ranges.
Sorry for any confusion, I really appreciate the advice and comments from yourself and the other forum members.
I may decide to do it when I check the valves in another 3k when the tank and SAI gubbins has to come off.
Don't put any money on it though! lol

 

Yep same as me - SAI removed, but popping still there, which is good

 

When I replaced my silencers I got the popping and banging on deceleration with the standard ECU map. After replacing the map with the TORS map the popping stopped.

My only reason for removing the AI is the smoother throttle response at the low end.

As well as the four options listed above there's a fifth and even simpler option.

Remove the left hand side cover, pull the Air injection pipe out of the air box, it's a push fit.

Put a piece of gaffer tape over the end of the pipe and shove it back in the hole. Replace the cover then turn off AI in Tuneecu.

Job done. It takes less than 10 minutes. If it doesn't suit you can reverse it just as quickly.

And let's face it, unless you're desperate to remove the plumbing for aesthetic reasons why bother? And anyone who thinks weight saved by removing so little of it is going to make a noticeable improvement to performance is deluding themselves.

 

Blocking the tube temporarily is still a good way of assessing potential improvements though. And yes, my blockage for the airbox was a wine cork !!

 

Any particular year biglad ?

 

Not so much year, but the Domaine Roche Mazet and their cabernet sauvignon cork works very well. It's all about history, passion and attention to detail.

 

SAI removed airbox baffle removed (without taking half the bike apart) K&N fitted now waiting on my kit from Greece hope it's here for the weekend

 

They All run extremely well in Standard Trim, they just lack throttle response and power ! Example 600cc sports bikes produce 120hp ! So why do 900cc cruiser twins produce 50??? As a 900cc 4 cylinder it would be 214hp ?so where did 164 possible horse power go ? Oh I know in the sai and restricted exhausts ! My 2009 America is in the ball park of 75/80hp and still should be more, so I guess it's cam/valve timing.........not going to mess with that as cams cost way too much !

 

Same here - although I have also removed the end baffles from the OEM silencers. It sounds lovely, and pops better than ever.

 

All done K&N filter, SAI removed, snorkle and baffle plate removed, louder pipes so now can anyone recommend a Tune Ecu map to load in? I would like to keep the O2 sensors at the moment