Help with minor misfire / hesitation ?
Had my new 09 s3 for over a month now, done 3k miles, had it REVO'd and Forge DV fitted, now im quite sure i noticed this little problem before the mods but cant be too sure, anyway im experiencing some hesitation usually always whilst motorway driving, its a strange one as it happens when im keeping the revs and speed pretty still usually 3.5rpm in 6th gear (although it happens in 5th too), so im not on heavy load or even really accelerating at all, just keeping it moderate - then i get a very minor misfire, the only way i can describe it is if you imagine a short gust of wind hitting the front of the car - the car slows for a split second but the rev needle doesnt move (its def not wind lol, as ive been keeping an eye on it for a while), also it doesnt always happen can be every 5 mins or every 10 mins,
Anyway, i took it down to Stattler today just to check there were no fault codes and there was none showing, everything seemed fine on the laptop, Steve suggested it could either be the DV stripping boost sometimes or just the nature of the software, either way not a big problem, which made me feel better.
I then rang Mike at Votex who loaded the map, he suggested it could be the MAF sensor although he did point out this would be strange on such a new car, he said to put the car back to standard when the select switch comes and take it to the dealer to see what they say.
To summarise, it is a very minor problem, but one of those things you constantly look out for as its always there, so quite irritating really.