The three most hated letters T P S !!!!

[darrsi]

Check the Suzuki one 13550-13D61 Exactly the same and usually over half the price depending on where you buy

Both Mikuni

Compare it to the Yamaha one 4HD-85885-00 and see for your self

Hi Unfazed,thanks for the number,I'll keep an eye out for one as they do come up a lot over here on leboncoin but without the serial number it's all guesswork and suck it and see,after living in france for 20 years i still dont get the second hand sellers ,they post photos of dirty uncleaned parts and when you ask if it's been tested you just get a non,if it works ill buy it otherwise it's just food for the bin !
coeurdelion

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I had a look at my notes from a couple of years ago and undoubtedly after a lot of research found out, like Unfazed has said, i'd written down that the TPS is the same model number as the 2001 YZF-R1.

Part number: 4HD-85885-00-00

Better still, i found one that is a reasonable price too:

https://www.ebay.co.uk/itm/314487469323?  

Hi darrsi,thanks for the information and part number ,it will help a lot in my search ,unfortunately the one on eBay isn't mikuni and the last one I tried that didn't work was also not mikuni so lesson learned but thanks .I've not got a proper trip on the bike until end of September so hopefully plenty of time to source one and if not I'll just not look at the rev counter needle jumping about when riding 
Coeurdelion

There has been a lot of discussion about these over the years, but unfortunately they were all on the old website which can't be accessed now.
To cut a long story short i would say DO NOT buy a used one. Due to the age of the bikes you will have no history of it, apart from the fact it will be very old and likely to have done a lot of miles.
I bought two used ones before and they both failed on me, not instantly but gradually, so the bike playing up sort of creeps up on you whilst creating a lot of confusion figuring it out, but at least now i know the signs, as my bike is now on it's 4th TPS but at least the latest one was brand new.
Personally i reckon you're thinking too much into the Mikuni thing, and IF your last one was brand new then i'd say you were just very unlucky as there's not really too much to them.