You appear to be well confused.

SAS is only used really for emissions, it is designed to route air directly from the air box in to the exhaust stream as it exits the cylinder which puts more oxygen into the exhaust and enables the cat's to get up to temperature and work more efficiently, one they are at temp it really has no function.

If you have aftermarket exhausts then it does nothing. However it is a very small system and the removal will not accomplish much in weight saving, if you are talking about removing the airbox and replacing with a foam filter then that is a different thing all together that does have a weight saving, and improves access to the engine area. Removal of the original exhausts and replacement with akro's or similar will also save a lot of weight, some on the bike and loads out of your wallet

 

Possibly confused and maybe mixed up SAS mod with air box replacement. But also susceptible! Hence question.

I read these claims on various sites but not sure if true. I have aftermarket FMF cans but by sounds if it not worth going?

Curious why some do it though as lots of threads on it??

Thanks for info

 

sorry you have confused me.

If you have FMF cans (nothing wrong with them) the SAS system is redundent it ONLY works with the original system with the cat in the cans, so just get rid. Its not hard a couple of blanking plates and a little dongle thing, it just wont reduce weight by much.

or you can just leave in place and just bung up the tubes and effectively get the same effect at next to no cost.

 

I've heard that on my 2011 dakar 990 that you can just "turn off" the SAS with tune ecu?

 

Yep, you can. But why not just remove the whole lot - a fair bit of plumbing. It's not like a new buyer will ever try to knock you down for "missing the un-needed complex nonsense"....

I think it's just there for emissions - makes the bike leaner when starting and it good for the CAT. No CAT = no need.

I don't have a 9x0 photo handy, but even on my 1190 it's the same sort of pipework. It's the black pipe. You get blanking plates for the cylinders, a dongle for the one connection you can see, and a blanking tube for the airbox hole. Simple as.

 

Been told by taking the SAS out you may gain a tad more performance but at the same time use more fuel. I have after market cans with new map and the SAS is still in place. I am more then happy with the power from the 990 so the SAS is staying.

 

I have the plates etc sitting in a drawer, can't be arsed doing it. Isn't the right side a prick to remove?
It also stops the backfire pops when closing the throttle, with aftermarket cans fitted, dosent it?

 

The sole reason I haven't done this mod is because I like the overrun backfire!... I know that makes me a childish twatto, but it makes me smile so the SAS is staying!!

 

It is cool, I like it too. If I crack the throttle hard and fast in neutral it backfires hard! But out the air box. Bang.

 

No
No
Yes
Yes

In that order.

 

I still don't know where the air is getting in then? Are we saying that the SAS does absolutely nothing at all once the engine has warmed up?

 

Maybe its unburnt fuel igniting in the headers because it runs a tad richer with aftermarket cans?

 

Why is this Stupid Arsehole System only on KTM's?

 

It isn't, most manufacturers will have a similar system. Kawasaki had a system on there GPx's even before catalytic converters came in.

 

Bike was designed without it, only added for emmsisons and noise regs, Fuck it off in the bin it serves no usefull purpose and is just another thing to go wrong at a bad time.

 

Backfire is unburnt fuel, running rich on the overrun, air makes it run lean and hot. What map do you have dozerman?

 

Ok, will do.