I'm looking at removing the AIS and fitting block off plates. I would like to hear any feedback from members who already have . I have already flashed my ECU and fitted a Akra carbon exhaust. I would like to know if a retune is required all does the O2 sensor take up any slack? I've seen the youtube on the installation of the plates and seems straight forward enough. The video does not mention removing the reeds before putting the plates on. although I have seen it mentioned in other articles. What is the Go? Please
Has anyone fitted AIS block off plates ?
what are you hoping to achieve? The O2 sensor only does anything on a closed throttle, or less than 2% or thereabouts.
the AIS only comes into play on deceleration. is it really worth the grief of fitting blanks?
the AIS only comes into play on deceleration. is it really worth the grief of fitting blanks?
Triple Trouble
Super Moderator
I turned the AIS off when we flashed my ecu...
No need for blanking plates
No need for blanking plates
fizzy
Member
TT is right it's a option when you get the flash, , might be worth having it done through the flash
AIS turn off option was not available / not recommended when I had my ECU flashed in oz . I am looking at reducing the amount of popping thru my Akra carbon on decel .
Triple Trouble
Super Moderator
No they won't have the same flash as were based in the UK
It's not a hard job & cleans up the popping on deceleration quite nicely. It was ok for the 1st 5 minutes but then became nothing more than wank factor.
I removed the AIS & all the internals & have had no adverse effects after 9000k's
I removed the AIS & all the internals & have had no adverse effects after 9000k's
misscrabstick
Member
This is incorrect, o2 sensors work most of the time the engine is running , they are ignored by the ecu 1) during the warm up cycle 2) during acceleration as richer mixture is required defaults to mapped fueling and finally 3) flat out, this prevents weak mixtures detonating the pistons to death.
AIS throws air into the exhaust to reignite exhaust gases to clean up emissions further precat, the popping starts as the fuel comes back in as the engine speed drops, usually at higher rpm's on deceleration with a closed throttle the fueling is cut off anyway, the AIS will be doing stuff when the throttle is open and the engine is cruising, you just don't hear the popping because there's more exhaust gases in the exhaust and the reburn happens quicker.
so if they're ignored during warm up, acceleration and full throttle operation they only do anything at very small throttle openings. It is a narrow band sensor, not used for normal fuelling.
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misscrabstick
Member
No, they work at mostly constant throttle openings, narrow band is old school oxygen sensor technology with a output voltage to the ecu between .1 to around .9 of a volt, wide band sensors are the newer tech sensors, they output higher at a max of around 5 volts, they also can not be checked reliably with a oscilloscope.
Regardless both types work at modifying the fuel mixture at all engine speeds providing its a reasonably constant engine speed, the engine is not cold, and not accelerating, or flat out.
I refer you to this wiki article on oxygen sensors, there is no difference between the theory and operation of motorcycle lambda sensors and cars.
Oxygen sensor - Wikipedia, the free encyclopedia
I'm not going to say anything further on this subject, you can believe what you wish to, makes no odds to me, I fix cars every day for a living and have been for years, and emissions diagnostics are one of my specialities.
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Twozup
New member
Man knows his stuff ^^^
I quite like the popping and banging on overrun.
But then I am cool for a total gimp.
Can I have a few weeks in Lanzarote for Christmas this year please.
I quite like the popping and banging on overrun.
But then I am cool for a total gimp.
Can I have a few weeks in Lanzarote for Christmas this year please.
misscrabstick
Member
If you mean me
I just looked in my underwear and there is no willy, I am pretty sure that I am a woman who knows her stuff.
Triple Trouble
Super Moderator
Haha. Excuse him miss c he's been on the buckfast again lolIf you mean me
Twozup
New member
Man/ woman all the same to me [emoji106]If you mean me
(Apols miss-c! [emoji177])
Can I have a few weeks in Lanzarote for Christmas this year please.
Miss, what is your opinion regarding block off plates? It is worth the money?If you mean me
Thanks!
flydnb
New member
Yeah you were saying about this the other day.
misscrabstick
Member
How much are they asking? I looked on ebay and could not find any for sale