According to MCN, Honda have developed a new, more efficient (3%) engine for the PCX for this year. The claimed mpg goes up to 133.9. I've had 132 out of my scoot before - well, it was over 131.5.
Full story here: http://www.motorcyclenews.com/MCN/News/ ... ed-133mpg/
Revised PCX125cc engines
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maddiedog
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Re: Revised PCX125cc engines
Interesting. Sounds like a minor tweak to the ECU, or an added sensor. I'd be curious how they modified it...
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride 
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Revised PCX125cc engines
Revisions to the cylinder head, barrel, piston and cooling apparently.
Linky
The PCX150 has also benefitted from these new engine developments.
Another linky
Linky
The PCX150 has also benefitted from these new engine developments.
Another linky
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maddiedog
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Re: Revised PCX125cc engines
Didn't see anything about that on the first link, second link asked me to sign in for the "Visit www.mcvpo.honda-eu.com for more information." part. 
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Revised PCX125cc engines
From the first link: Positioned as a low cost scooter, the Honda PCX 125 has plenty of talk here its release in 2010, partly because of the idling stop system, close to the "stop and start" automobile. This system goes into standby mode when the engine stops in urban areas, to lower consumption and CO2 emissions. Known for its easy operation and low overall cost of operation, the PCX will inherit in 2012 of part of the Vision 110 technology and adopt the name PCX eSP.
The combustion chamber is edited, the cylinder gets a new chemical treatment, the piston is reduced and cooling with a refined nouveal heatsink / fan. Idling Stop System is of course of the game. According to Honda, performance and pleasure not change, but the average increase from 2.17 to 2.10 l/100 km. A modest, but given the low consumption of departure, it becomes difficult to progress without massive investment. The PCX 125 eSP should arrive during the summer in France as in neighboring English and the price should not move (€ 2,440).
The more info part is a link to Honda's press office so looks like someone at T&G forgot they were signed in to a restricted area
The combustion chamber is edited, the cylinder gets a new chemical treatment, the piston is reduced and cooling with a refined nouveal heatsink / fan. Idling Stop System is of course of the game. According to Honda, performance and pleasure not change, but the average increase from 2.17 to 2.10 l/100 km. A modest, but given the low consumption of departure, it becomes difficult to progress without massive investment. The PCX 125 eSP should arrive during the summer in France as in neighboring English and the price should not move (€ 2,440).
The more info part is a link to Honda's press office so looks like someone at T&G forgot they were signed in to a restricted area
Four decades on two wheels has taught me nothing, all advice given is guaranteed to be wrong
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maddiedog
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Re: Revised PCX125cc engines
Okay, must have missed that. I wonder what "the combustion chamber is edited" means. Maybe they changed the valve positioning or something...
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes
Re: Revised PCX125cc engines
It's a Google Translate of a French website, so the language is interesting.
Four decades on two wheels has taught me nothing, all advice given is guaranteed to be wrong