So guys i am looking to buy a 2007-2008 xtx but i am troubled witht eh ecu issues, so my question is, does PCV fix the surging issue on those? Or if i buy one of those i am doomed to surging issues? Thank you in advance

It most certainly does if you are in it for the long term the best option by far if it�s the value for money you are after then buy Kevs mod but a PC is another league.

i have had 3 xt660 now (still have 2 of them) Two with the kev mods one without never had any problems with any of them at low speeds never had any problems with them surging at all they run fine if you know how to ride them mine have anyway they are no sports bike but lots of fun. i have 4 other big bikes but still love the xt660. most important is the cush drive rubbers check for free play and the chain slack keep that adjusted right and you will have no real problems

I can assure you the PC will fix the surging but it�s a jigsaw puzzle and you need all the pieces,thats a pair of aftermarket pipes,snorkel out,both 1&2 filters and the holes as per the size in the air box it will transform the bike,leave anyone one of those mods out and you�ll notice the difference with the bike I did each one separately.

I originally went the Kev mod there�s a marked improvement and you�ll get the same improvement again from his mod to a PC just a case of how much you want to spend and how much hassle you want to go through to get that better result.

I am actually about to buy a 2009 xtx after all with 35k km(thats what he says at least) completely stock so i can do what i want, About the holes in the air box i actually did not find enough info, i also found out that stage 3 is not sold anymore and its actually rather expensive( maybe 600 euro for used)... so when the time comes i will have to come looking for more info about the holes drilled. Thank you all for your answers, the cush drives i am looking how they are named in my lang ...

cush drives are the rubber 'shock absorbers' in the rear wheel housing. They sit
within compartments as part of the rear hub.
basically they wear and can cause snatchiness. Simple fix is to use old inner tubes to pack them out OR buy some made out of polyurethane ..
HTH

So guys this is what i am about to buy( tomorrow will probably go make the paper...) Sorry for the wrong angle but its how the uploader uploaded them...

Looks like a nice example..and unless the sticker on the air box is a blag its already got a K+N airfilter in..

Any service history?..

And a fork brace bling kit too

Thanks for that nikroc, where's good for those polyurethane cush drives?
Also, is the same place good for front and back chainset (my bike is now 7 years old and I should treat it to a new set)

Sorry I have no idea where to buy the cush drives..maybe Ebay?..

Tbh I used the inner tube fix. Worked perfectly well on both mine and my mates R.

As for chain and sprocket kits..again Ebay or maybe M+P etc..just dont buy cheap stuff .