Hiya guys I recently bought an a4 1.8t cabriolet, flew through an mot and been driving mint until I went from middlesbrough to Glasgow, after about 2 hours driving I put my foot down for an over take and the car was popping spluttering and really jercky. Now I've had it plugged in and its cam up with 16497 (air intake temp sensor) before I throw money at this will the new part fix/solve my issue.. any help would be appreciated cheers guys

Welcome to the forum you'll find the members on here are a friendly and helpful bunch. I'd go with what the code reader has said. Alternatively it could be the maf sensor, fuel filter, can sensor. 

4 hours ago, Steve Q said:

Welcome to the forum you'll find the members on here are a friendly and helpful bunch. I'd go with what the code reader has said. Alternatively it could be the maf sensor, fuel filter, can sensor. 

So I've changed the iat sensor and that didn't work so thought id take off the n75, definitely need one ogmf them as I broke it lol really doin my head in as to what the cause could be

Keep us posted on how you get on 

So I unplugged the n75 the car drove without the issue just no turbo as expected so looks like it could be the valve causing my problem gonna change it in a few weeks when im bk home ill post an update when its done cheers guys

15 hours ago, phil1888 said:

So I unplugged the n75 the car drove without the issue just no turbo as expected so looks like it could be the valve causing my problem gonna change it in a few weeks when im bk home ill post an update when its done cheers guys

Nice one, hope that fixes the issue 🙂

Hi guys a quick update on my driving issues, turned out my injectors were the cause of my issues, I've put 440cc injectors in and it drives a lot better, due to a broken n75 valve im not getting much boost but I've a new one on the way, now do I get the car mapped again or get the original injectors serviced decisions decisions 🙃 

Glad you e got to the bottom of it. Now there's the question! 

Well final update, the new n75 valve is on and it looks like the cars getting another remap 😁 no bottom end boost due to bigger injectors