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Old 04-24-2020, 06:57 PM   #17 (permalink)
Aero Wannabe
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Join Date: Dec 2007
Location: NW Colo
Posts: 697

TDi - '04 VW Golf
90 day: 55.54 mpg (US)
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Originally Posted by GreenTDI View Post
Chiptuning could help reduce consumption with about 5%. Only if you don't make advantage of the extra power, that is. You could save even more if the EGR has been closed and the particulate filter has been deleted. But those things are not recommended (emission-wise)!
Of course mine is old enough that it did not come with a particulate filter. I did remove the muffler and replaced it with a straight pipe. It is not loud. The turbo and catalytic converter seem to muffle exhaust noise just fine.
60 mpg hwy highest, 50+mpg lifetime
TDi=fast frugal fun

Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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