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chloe080105

Is anyone's remapped GTI blow black smoke?

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I have noticed that under hard acceleration, my GTI blows a puff of black smoke from the exhaust. After the initial puff each time everything seems fine. Performance hasn't been affected. Just wondered if anyone else has noticed it on theirs? I have seen Audi's with the same TFSI engine do the same so not sure it's a trait of the engine. Interested to read other people's views.

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Have never noticed any although I have never followed my car.

I have noticed that it is now taking longer to soot up the exhaust tips and the car isn't using any oil.

How many miles have you on yours?

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Black smoke is fuel, blue is oil and white is water. I'd say that it's over fueling at low revs just a bit.

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I have done 29,000km's. I would have thought that the remap would have made the air/fuel ratio produce a near perfect burn. Meaning no black smoke (from excess fuel). Fuel economy on cruise is better than standard. I notice the puff of black smoke when I look at the rear view mirror to see how far I am pulling away from the person I am racing... smile.gif

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it happens yes - pulled up behind a presumably remapped GTI which floored it and puffed out smoke like an old hag in a social club

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The engine on the mk5 gti is turbocharged and therefore the fuel to air mixure is quite rich, hence all your exhaust pipes have black sooty deposites inside them. Under normal driving the soot builds up inside your exhaust but when you accelerate hard the sooty deposites get blown out of the exhaust, this will happen on all TFSi cars, not just remapped ones as they are all tuned to run on a rich fuel air mixture.

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