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Author Topic: SAS been told a story!  (Read 8125 times)
Solo
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« on: June 14, 2014, 00:58:07 »

Hello

Called into local scooter tuning place that had Piaggio leader engine belts in stock, while waiting the local engineer came over for a chat with me ( free advice )...

Asked me if i swapped my Piaggio Catalytic exhaust straight over fort he 4Road Leo Vince ? I told him yes.

He said that's where most people go wrong with the Piaggio bikes with SAS valve on them, i was told that the SAS valve is there for the Catalytic exhaust, to feed more free oxygen in to the engine to meet emissions laws which don't really matter over here but is fitted.

I was told if it pops....or runs abit crap on petrol, i told him yes, he tells me now i have fitted the Leo Vince the SAS must be blanked off, as the Catalytic exhaust is gone, the engine is now been fed extra oxygen for no reason wich will give a weak moisture and pooping...

So any one with SAS valve on the Piaggo engines and have an after market  exhaust and hear pooping or slightly lowed MPG, Blank off the SAS valve


Don't know if any of this is true but what he told me and ill try it tomorrow.

Unless anyone wants to speak up on the subject ?

SOLO





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(5X) Piaggio X9 125 (1x) Piaggio X8 125 (1X) Aprilia Atlantic 125 (1x) Gilera Runner (5x) Pioneer Nevada 125 (1X) Shineray 125 (1X) siamoto 125 (1x) Piaggio Zip **Biking since 2005**

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Dave Milnes
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« Reply #1 on: June 14, 2014, 07:10:30 »

It sounds plausible, and may explain why some owners have no problems after fitting replacement exhausts, as the secondary air system has previously failed and been blocked off, probably even before they bought the bike.
I'm not sure is SAS was fitted to all 125's from the start, or whether it was another later introduction probably around the 2003 time when the Evo was introduced. This may also be why very early 125's except replacement exhausts with less problems than later models.

Report on the results and that may confirm the info was good in which case give them a plug!
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2004 X9 500 Evo in YELLOW - 2016 Maxsym 600i Sport
Anderton 2004, Pen-y-cae 2005, Matlock 2006, Hay on Wye 2007, Minehead 2008, St Florence 2010, Newent 2011, North Kyme 2012, Betsw-y-coed 2013, Hardraw 2014, Parkend 2015, Whitby 2016, Mundesley 2017, Derby 2018, Telford 2019, Loch Doon 2020, Cumbria 2021.
shedload
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« Reply #2 on: June 14, 2014, 14:24:59 »

My first X9 125 was a 2002 and I am fairly certain that it did not have an SAS.

I have just had it go on my current 125 evo, and have blocked it off with no ill affects. It still has the original exhaust though.
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Solo
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« Reply #3 on: June 14, 2014, 18:21:42 »

The Piaggio X9 2002 125s has no sas valves but all the evo x9s did and after the x9 evos the X8 came out with them on.

So if the sas valve not been blocked off and you fit a free flowing pipe....and not plug it off....will get abit bad mpg and poping.... ill be plugging it soon and see the results
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(5X) Piaggio X9 125 (1x) Piaggio X8 125 (1X) Aprilia Atlantic 125 (1x) Gilera Runner (5x) Pioneer Nevada 125 (1X) Shineray 125 (1X) siamoto 125 (1x) Piaggio Zip **Biking since 2005**

FaceBook: https://www.facebook.com/SOLO.Biker.Leeds
Photography: https://www.flickr.com/photos/solo-photography/
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