Snatched throttle response.

I've just recently bought a triumph america with 2,5k miles on the clock 61 plate. I've been out tonight to show off my new bike and buy the wife some new bike gear and I'm finding it difficult to make smooth progress. If I slowly open the throttle from closed it tends to snatch and if I'm doing a steady 30mph in 3rd gear I can feel the bike constantly hunting back and forth. Is this a common fault do we know? If so is there an easy (cheep) fix. Or am I being paranoid?

Thanks in anticipation,
Andy

 

Ok so reading around it seem o2 sensor removal and ais removal is a good place to start, so bits now on order. Waiting is the worst bit when you want to get things sorted.
Andy

 

I'm not sure how I'd find out has there been any upgraded mapping since 2011?
Thanks for the suggestion.
Andy

 

Is the ttp lead the one to go for or does anybody have a recommendation.
Cheers
Andy

 

Thanks for the suggestions looks like more money to spend. ..
Andy

 

Woody don't apologise, I'm more than happy when people are prepared to take the time to respond to my questions. Thanks to everyone who's replied. I'm new to triumphs haveing only owned one for a couple of weeks. So far I like the bike in general, hopefully I can get the fueling sorted and then sit back and enjoy. At the moment setting off and slow riding looks like I don't know how to use the clutch when in reality I'm having to slip it and ease it out with a lot more care than my other bike were I can just set off and creep along on tick over if needed. Anyway onward and upward, once my new bits arrive I'll get sorted and report back.
Andy

 

Thanks for the info. I started it up this afternoon without touching the throttle and let it run for 20min with an old fan blowing a bit of air about, so I'll see if it's made any difference next time out.
Andy

 

I was talking so a neighbour today about my problem (bike only) and he asked what fuel I was using, suggesting that super unleaded might help. Has anyone got any views or experience of using different fuels?
Cheers
Andy

 

Well I tried the ??mini reset, I started it didn't touch anything and left it for 25min. Well I went out yesterday and it seems better but not quite 100% . But I did make it on to BBC look north riding in to Hornsea with a few other triumphs.
Andy

 

OK, all my bits have arrived SO...my plan for the morning is remove and blank off o2 sensors and the same with the ais. Once done I have a obd cable and software to check things etc, the first hurdle seems to have got me though, where is the socket for the obd cable on a triumph america? Once I have this small but critical bit of info I hope to out in the afternoon fully sorted. Wish me luck.
Andy

 

OK ais removed and dummy plug fitted, o2 sensors removed and dummy plugs fitted, online with tuneecu and vacs are identical and tick over at 1050 to 1100 no faults and the standard map loaded already. Going out after tea to try it out. Is there anything else I need to check? TPS goes from 0 to 95% should I be able to 100% ?
Cheers,
Andy

 

Thanks for the offer, all removed now ready for testing later on this evening.
Andy