Why mpg testing is difficult and variable...
Fiberglass wheel covers will be a project of mine in a few months (maybe next spring). I first need to do the engine swap, install cruise control, put the new wheels on and do other small modifications like the PCV catch can or maybe the A/C kill switch when accelerating.
Eventually though, I'll get those damn wheel skirts made. Another problem with it though is that the insight rear wheels are considerably inwards (toward the center of the body). On all other cars the wheels stick out. Maybe the trick is to get super small wheels too, which I will NOT do considering I just spent a small fortune on my HX wheels. |
Compression Tester
I drive an automatic and am a big time coaster. Heck, I’ll crawl as far as I can and relax while doing it. Part of smart driving is knowing how much gas you need to burn between point A and point B. It’s always interesting to see SUV’s and trucks roar around me so they can get to the red light first. Should I pat them on the rear bumper and congratulate them for winning the race?
Coasting is for relaxation, but hurrying it up breeds anxiety. Paul Osborne |
6th Gen Accord Aerodynamics
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Good-bye
I pretty much coast as much as I can. If I don't need to burn the gas I let up. I'm a very patient driver - I can even rejoice in a traffic jam!
My wife tells me I drive like an old lady. :-D If I think there is a stop sign up ahead, my foot is already off the gas. Remember, I'm the guy who wrote the book Take Your Foot Off The Gas. ;-) Paul Osborne |
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Neutral Maybe Not-so-Good
I read somewhere that putting the car in neutral actually uses more fuel -- here's the theory. When you lift your foot off of the gas, you allow the car to remain in vaccum, compression of the engine is used to slow, and minimal fuel is delivered. If you shift to neutral, you're asking the car to use deliver fuel just as if you are idling, which which may be more than allowing compression to slow you down. If you have a manual, the recommendation is to stay in top gear until the engine is about to bog, then shift to neutral, or cut shut the engine down.
RH77 |
That's what I've heard about
That's what I've heard about honda in particular, but talking to drdisco from h-t, he suggested that mehbe the cost of decelleration from engine breaking would mean less time to coast or more need to accelerate after coasting, which might make coasting in neutral a more viable solution.
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Honda-Tech Post
Over at h-t there's a thread that really tries to figure this out (and really belabors the issue at times)...
https://www.honda-tech.com/zerothread?id=1404584&page=1 Essentially the fuel injection system (including DPFI) pulses to lean out the mix on closed-throttle, whereas the fuel injectors are on full-duty during idle to maintain a certain RPM. You're correct in the fact that is may slow you down too quickly, so then fuel is to be used to catch back up to traffic, so finding that sweet spot would yield the best economy. This would be much easier on a manual, because my automatic gets all confused when I shift to neutral down a hill going 55-60, then shift back to D4, which causes some drag and may have negated the whole fuel savings while coasting (basically it seems to go into 3rd then down to 4th). The best thing to do is to cut the fuel injection entirely when coasting, perhaps? That way you get to keep all that fun safety stuff running(if you have it) like power steering and power brakes. RH77 |
Power steering psssh...I
Power steering psssh...I don't need that. I would like my power brakes back though. Sometime soon I'm going to start experimenting with shutting to car off to coast.
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Re: Power steering psssh...I
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RH77 |
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