Have you ever been an inadvertent ecomodder?

[2000mc]

A couple of years ago I was sitting in a restaurant watching the snow falling on my car just across from where I was sitting. I noticed that the snow was melting around the edges of the hood and around the headlights, but not at the back of the hood. I assumed this was due to the seal at the back edge of the hood. So I ran some cheap foam tape around the other areas, thinking it could help conserve the engine temp while running errands and such.
Fast forward a few months, and for whatever reason I wanted to check what the temperature outside was. Displaying my intake air temp on the scangauge, while driving on the highway or interstate, had previously been just as good as having an outside thermometer. At first I was confused by the readings, but after watching for a couple more days, I realized what I'd done. I accidentally had given myself a mild warm air intake, worth about +25f on my intake temps.

[user removed]

When the only new Nissan alternator-waterpump-fan belt I ever had brake at the seam on my 76 280Z, 10 miles away from the shop. I used P&G (engine off) to get home without cooking the engine.

With the clutch fan spinning due to airflow and driving the water pump, the temperature gauge reading was actually LOWER after 10 miles that it would have been normally.

regards
mech

[Xist]

I used pulse and glide with my first car over a decade ago, but did not see a tank-to-tank difference.

[Chrysler kid]

I hit a coyote going about 40mph on a backroad in my truck. It was nasty and he stuck in there. I only drove around for a day or two with him in there as a grille block


/thread

[some_other_dave]

I wound up doing P&G to keep oil temps under control when going through the Nevada desert in the summer in my 914. Was good for fuel economy, too.

-soD

[Kara]

Two things with my (now sold) automatic 2000 Renault Mégane :
- I once broke my RHS rear view mirror driving too close to a (badly) parked car. I duct-taped the hole and drove like this for a few months ==> unintentional aero mod !
- On a long highway trip the water temp gauge was going really high, and the temp light went on. Without knowing it was good for fuel economy, I did some pulse and glide to be able to cool the engine down. (finally it was due to a leek, I had almost no "water" left !)