Your mods look good. Funny, I sealed the bottom front corners on my Mk IV with coroplast. We think alike.
Quote:
Originally Posted by Tesla
Diesel's like air, the more the better and cold air is denser so more air per unit of volume. What you might want to consider is a RAM air cold intake. High EGT's is what kills diesel engines, the hotter the air intake the higher the EGT's, running the engine hotter may yield a small benefit in FE, but it's false economy when engine longevity is compromised.
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If you hypermile slow and easy on the flat land of Texas you may be fine with such extensive grill blocking, especially if you are not using A/C. I monitor Intake Air Temperature (IAT) on my ScanGuage and it can go to over 200 F on long climbs in the Rockies. IIRC I read somewhere that a degree of intake temp increase is like 3 degrees of Exhaust Gas Temperature. I have the top left grill block open to feed cool high pressure air to the factory ram air intake. I have the intercooler grill open except in winter when I block part of it.
I have a full belly pan from the front to the back bumper. Check my album. I have loaded some pics. I only screwed into plastic- body plugs, bumper edge etc. There is a wind deflector plastic ahead of the fuel tank of the Golf. I pulled it off so I didn't drill into the tank but I have a couple of screws into that plastic.