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Yes it is the A4 2.0 TDI tr7, sorry for missing that detail in my original post, thank you for all the advice guys. Once I have chance to get the egr off a looked at I'll post what I find, cheers!

A bit of background about the car, I bought it about three years ago and about a year later the car seemed to start coughing and spluttering and kicking out loads of smoke. I took it to a garage that deals with Audi's and they put it on the diagnostics which showed a boost pressure fault but...

OK, so I looked under the car at the exhaust system and there are no bulges in the pipes coming down, no sign of a cat or dpf as far as I can tell, there looks like there is a slot under the middle where it used to be but the exhaust pipe leading down is the same diameter all the way from the...

Right, I'll have a look at the exhaust system in the morning to see if there's signs of a weld on the can and also check where the egr valve is meant to be and report back. I just can't see why the car would have them deleted with a remap if they are still part of the cars system but I'll double...

The lads at the garage said the egr and dpf were removed and the car had been remapped so he couldn't tell if the injectors were performing correctly with his software and would have to put it back to standard settings and start over anyway but told me he didn't want to go any further with it, I...

Would unplugging the maf sensor cause the car to run as it should if that is what's at fault? I have no idea, someone else will do the work for me. If that was the case at least I could rule it out without buying another one.

Could the MAF sensor thats showing a fault cause this sort of problem?

No not particularly, haven't noticed it when the bonnet was lifted anyway, I'm not using the car currently as I was worried I might do some serious damage but when I took it to the garage which was a decent drive I lifted the bonnet when there and everything seemed normal. The car does seem to...

Hi all, I'm having a problem with my audi a4 2007 as stated in the title. The car feels like it's pulling back and kicks out a lot of smoke. It starts up fine and idles OK however when it hits 2000rpm the engine doesn't want to go any further and without dipping the clutch it really struggles to...