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SAS removal yes or no !

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39K views 23 replies 13 participants last post by  charlie264  
#1 ·
As above really, mine is fitted not sure to remove or leave it in ! is it just a weight saving mod ! or is there another reason to remove it as in any performance/fuel gain ! iv read about it from 1 end of the internet to the other and it seems its just for weight saving really ! other thing i read is it does cause the exhaust to pop and grumble a bit when closing the throttle ! now the sound of that alone makes me think keep it on as it sounds wicked.
 
#2 ·
Weight is minor, even if you rip out all the hoses etc, easier to drink 1/2 pint less for a couple of weeks. Makes no difference to fueling or power, and I have not noticed any popping or banging.

I removed the ones on our 1090 / 1290 just to free up space under seat, takes no more than 10 minutes, I left the hoses in place so I can refit it before selling / trading in.
 
#4 ·
I think that is mainly the Yanks saying such things, and two things to note:-

1. They often have way more complex emissions controls and removing all sorts of shit may well improve their bikes (or not, see 2. below)

In our case the canister is just a way to vent fuel vapour via a charcoal filter to reduce CO emissions, all you are doing is removing the charcoal filter and venting to atmosphere.



2. They talk a lot of bollox.

Their approach to things is "If it ain't broke convince yourself it is, then break it and convince yourself it is now much better"

According to the Yanks if you have not fitted a full Rotti kit you will need a new engine before you get to the first service.

If you wish to follow the advice of our US friends then you will also need to send you engine oil off for analysis every ride and make sure you change it every 1,000 miles, and don't forget to fit a car tyre to the rear wheel for better mileage ;-)
 
#11 ·
Unless someone removed it then it did have the SAS but not the canister.

My 1190 has the SAS on it but my 990 had it removed and blanked.

Looking at the kits on US sites it seems they deal with both at the same time, thus call it an SAS/Canister kit.. but they are separate things.

If you have a blanking plate like the one in this link it has been removed.

https://cdn10.bigcommerce.com/s-xk32d/products/80/images/275/027__74524.1405660493.1280.1280.JPG?c=2

If it had a pipe on it like here then the SAS was still installed.
Image
 
#14 ·
If SAS has no noticeable impact to performance I would not be bothered to f*** with it, one less thing to return to standard before KTM tell you they cannot warranty your TFT as the removal of SAS must of caused it ;-)

Ditching the canister took 10 minutes and serves a very useful purpose, and 10 minutes later can be back to stock (plus the usual 2 hours trying to find where I put it for "Safe Keeping")

Plus when buying a bike I look for bog standard, the more it has been "improved" (Often meaning fucked up, butchered, missing bits) the more inclined I am to walk away - and I assume other potential buyers have similar views, so unless a bike is a "keeper"* I try not to spend too much money on devaluing it ;-)

* "Keeper" = a mythical machine I will keep forever, I have owned many "Keepers" only to find they were in fact just ordinary motorcycles when something shiny and new caught my eye, so I have pretty much given up on expensive mods, where once I would of avoided electronic suspension so I could have forks re-worked and an Ohlins shock slotted in, I now except all this expense will pretty much cover a new bike every few years.

Maybe the last fire breathing fossil fuel burning bike to enter my garage will actually be a keeper as I have no interest in a Duracell powered vehicle, although if they end up having the performance of a 1290 with the weight of a 690 and a range that would allow me to tour the Alps even that may change....

...Although unlikely as they will also either be fully autonomous or have some kind of virtual policeman installed ensure no fun can be had.
 
#16 ·
I think mapping the latest 1290 models is difficult, not seen anywhere other then Hilltop - Don't want to go there (Literally or in this thread)

Not a fan of Power Commanders, as if there is not already enough electronic bullshit on this bike (and lack of underseat storage) the last thing I want to do is add more electronic devices and connections that can end my holiday.

I know many ECU flashes often do not touch the closed loop, which is almost certainly where the major improvements can be found, I was also told by more than one tuner that these dongles can cause problems, on my Yamaha CJS told me to just unplug and blank them off, another place (cannot remember where now) I spoke to on the phone told me that the eliminators caused problems on RC8's.

Another place (Race Engineering) recommended the Power Commanders wide band sensor kit for modern bikes / ECU's, which then means drilling out the headers to put the bigger sensors in - and IIRC by the time you bought the Power Commander, AT Module, Wide band Sensors, modified the pipes and had the dyno setup you can wave goodbye to a grand - which goes a long way towards a new bike.
 
#17 ·
Another way is to disable the SAS without removing it (and upsetting the ECU), just block the feed hose from the air box.
This can be done by pushing a small bolt in it and putting a blank (or some tape) on the airbox side. Alternatively a suitably sized ball bearing can pushed into the hose and then it can be connected back to the air box as before.

This means the SAS valve will still be operating but no air is being delivered to the exhaust ports, which means the gurgle will be gone.
 
#18 ·
Looks like some confusion with the sas here on the 990 and 950 . It was there to bleed air into the exhaust to make the cats in the silencer burn properly , without it they would become blocked . Removing the sas went hand in hand with fitting aftermarket silencers . The bike ran better afterwards and was smoother on low throttle removing most of the poor low end fueling that was complained about so much on the 990
There was a lot written on here about it back when the 990s were current . The extra sound from aftermarket cans outweighed the original ,especially with the lovely wings cans . The heat from the cats original cans was a real pain especially if you carried throwovers and pillions

No idea how it effects later models like 1190 etc .
 
#19 ·
I removed the SAS pure out of aesthetics: its horrible to look at.
got a kit off eBay from Greece: blanking plates+screws and resistor plug and some sticker merchandise. installed on the SMT without removing the tank (can just about fit a small socket wrench and spanner.
didn't have the popping before with the leoVince end cans though.
 
#20 ·
I removed the SAS from my 1190 adv r to clean up and give a little more room around the engine etc. I did this when I removed the cat and other mods so the exhaust ran cooler for European touring. Prior to this I would be on fire in low speed traffic. Made little or no difference to performance.
 
#23 ·
I have a 950 SM and during my 5 years I have had my share of issues. It’s a long and sad story but basically, I had the engine out twice and the carbs out lots of times. I soon got fed up of working around the limited space and the myriad of pipes everywhere. As I read it makes not difference I ripped it all out and made my own blanking plates. Bike runs fine, taking stuff on and off takes less time, less to faff around with. I have the x bikes air box mods jetting and Leo Vince pipes and the difference from stock is amazing and well worth the effort IMHO. I would like to do away with the air box entirely if possible and looked into the Rottweiler mods but the cost stops me. The throttle is……erm, sensitive but I’ve learned to cope. It is a bit of a weapon now so it’s not my daily driver.