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Old 04-26-2020, 12:34 PM   #12 (permalink)
COcyclist
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Join Date: Dec 2007
Location: NW Colo
Posts: 738

TDi - '04 VW Golf
TEAM VW AUDI Group
90 day: 52.55 mpg (US)
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Quote:
Originally Posted by GreenTDI View Post
A sportfilter could have more effect after chip tuning, when more air is required.
The air intake is already in front of the engine compartment, so it's getting cool air directly from the upper grill.
You may want to look at TDIclub.com for good information about the VW diesel. They do not recommend aftermarket cone style filters as the factory filter is already very good and free flowing. I have seen where some owners will add a second duct to the air box.
Quote:
Originally Posted by GreenTDI View Post
I'm thinking about removing the passenger windshield wiper. Looking at the regulations, I see that it's allowed. Hurray!
I have tuft tested the hood/windshield/A pillar/side window area send found the air is flowing forward at the base of the windshield. The wipers are in a “recirculation bubble” so nothing is to be gained there, at least on the Golf.

Quote:
Originally Posted by GreenTDI View Post
I found an astonishing article about Gerhard Plattner who drove a stock Fabia Greenline to nearly 107 MPG on a 1246 mile trip.
I suspect he is using E-Off pulse and glide to get those astonishing numbers. I do not recommend doing this in a turbo diesel except as an extreme mpg stunt. You could probably achieve those numbers in a totally stock Fabia Greenline. I plan to keep my car a long time and I would worry about turbo issues among other things.
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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.

Last edited by COcyclist; 04-26-2020 at 11:15 PM..
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