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Old 05-06-2009, 02:09 PM   #27 (permalink)
COcyclist
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TDi - '04 VW Golf
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Arrow EGR helps TDI mileage?

Hi Tas,

So if I'm reading the last map correctly, in a modern diesel we want to lower O2 levels by adding more exhaust gas, and injection timing just a little before TDC for best fuel mileage right??

Many TDI owners eliminate the EGR with a block-off plate to reduce soot buildup. I have also read that some have suffered mpg losses in the process. Is it your opinion that a fully functioning EGR improves highway mpg?

If so, I may have to figure out an alternate location for a future EGT probe I'm hoping to install. (there is a nice kit out there with the thermocouple probe mounted in the block-off plate)
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https://ecomodder.com/forum/showthre...tml#post621801


Quote:
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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