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The black smoke is due to the car being a Diesel (VW TDI) and he is probably running larger fuel injectors as well.
I run the Upsolute program in my VW Jetta and love it, I hardly smoke at all under WOT and it really adds a kick to the car. I have been chipped since 20K miles now have 112K miles and my lifetime MPG is hovering right at 50.5 mpg.
Not bad considering EPA for it is 45 and 49.
Injectors are the oher mod that is popular on the TDI engines and they do add a nice little kick but they hurt MPG's and also cause a smoke cloud to follow you around town.
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78 Euro 911sc Targa
03 Hayden
SCWDP
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