Just picked up almost 2.5 MPG in my Suzuki Swift by doing a simple grille block out of duct tape. 3 set 2-way average before was 46.95 MPG, and with the grille bock came out at 49.41, an improvement of 2.467 MPG.
So I'm now more convinced than ever that a grille block is about the easiest, quickest, and most effective mod there is (with the possible exception of maximizing your tire pressure).
- oh, and it didn't effect engine temp, at all, although it was pretty cold today -
You mentioned not wanting to shut off your engine for "only a minute or so". (!!!!) Some of us will shut it off for 10 to 20 SECONDS! I highly suggest you consider shutting off your engine if you're reasonably sure you'll be stopped for at least 30 seconds. Idling while not moving =
zero MPG. That
really skews your average DOWN!!!!!
