Quote:
Originally Posted by Joggernot
I blocked the lower grill on the 2000 Accord (V6 automatic) and finally got to make my run to see if there was any effect. Results are from ScanGageII readings over my normal run: two miles with five stops (4 signs, 1 light); 12 miles of highway; one mile with four stops (3 signs, 1 light). Before the block I would get reading from 27.2 to 28.6 mpg depending on whatever. This trip resulted in 33.6 mpg going and 32.4 returning for the average of 33.0 mpg at 60 mph on the highway. Can't say this is totally scientific (seems too high to be real), but the numbers are there. EPA for the Accord on highway is 28 mpg, but it has 250k+ miles on it.
I drive using TPS on ScanGageII and, yes, the TPS was one to two numbers less than before (17 vs 19).
I will have to wait to see what the tank will deliver this time.
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If your drive with the block was twelve miles, driving the same route without it should be a fairly good comparison, although ideally, you would have done this first, and again afterward. 33 MPG is 15% higher than 28.6, the higher of your numbers. I do not think that I have ever seen one single modification with results that large.
Please do not take this as ordinary criticism, just the constructive type. For the record, I have been on this site for a year and my car does not have a single modification!
Some do, the rest criticize.