3x? What is your setup and power figures?

EDIT: checked your sig 505whp is a nice figure... not quite 3x, but it's still impressive.

Any internal work?

 

While I have observed 29 MPG in my '05 AP2 on an all-freeway trip (which is 3 or 4 higher than the EPA rating, depending on old or new) averaging 75mph without traffic stops or slowdowns. It wasn't completely constant, but I'd say 70-80 the whole way. I have not done the same trip at a lower moving average. I plan on doing so within 2 weeks... I'll report back

 

if you can't afford the gas, don't drive. the kind of driving described in that article would lead me to homicidal rage were i behind him.

 

[QUOTE=scottrunsxc,Jun 6 2008, 09:24 AM] How are we supposed to prove it to you?

 

Come on, let's not get carried away.

If you take this to the extreme or limit, the results are not optimum.

That is not the point here, is it?

Anyway, I understand what you are saying and we'll leave it at that.

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EXPERIMENT (for those curious about reality):

I ask those subscribed to this thread to try this procedure below and post back to this thread. This approach will work even if you don't have an onboard means of tracking instant and avg mpg...

1) Fill-up your tank (without topping off - just let it kick off on its own, this is important for the little gas you will be using), where you pick a station close to a highway entrance ramp.

2) Get on highway and drive at a constant speed of 65 mph (set cruise if you have it) in your top gear. Do this for 30 miles or so (of course the more miles the better, but in this day of $4/gallon gas let's be reasonable).

3) Find an exit that has a gas station close to the off ramp, then exit. The idea is to not have much city driving to affect the experiment.

4) Fill-up your tank again (letting the automatic stop kick off the pump), noting the gallons used and miles driven.

5) Get back on highway and drive the same route back to the first gas station at a constant 75 mph (cruise control again or hold it manually). Hopefully the entrance and exits ramps are close to the gas station not spoil the experiment.

6) Fill-up again, letting the pump kickoff automatically again. Note the gallons added and miles driven back.

7) Simply divide the miles by the gallons and viola! You should have the results to this experiment.

8) Report back your MPG for each stint.

This should tell us something about efficiencies driving at certain hwy speeds.

If this is taken seriously, the results should be interesting (not saying I'm right or wrong at this point).

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EDIT: I realize head winds, elevation and traffic or many other obstacles/circumstances other could think of could spoil this, but if approached in a reasonable manner the experiment is simple and would probably yield good results on avg.

 

Unfortunately I just recently had a harddrive crash on my computer and lost all my mileage logs. I actually logged every tank of gas I put through 2 S2000's. Bone stock, geared (4.44's), and supercharged, I had about 50,000 miles worth of fillups (date, miles, gallons, mpg, and price of gas). I can absolutely gaurantee you that my 2002 S2000 and my 2001 S2000 both performed significantly better at 80 than at 50. Even when geared (while it did lower the optimal speed), I still got better mileage at 80 than at 50.

 

I bought an CRX HF back in 89 and on a trip from Columbus to Indy I acheived 62mpg travelling behind an 18 wheeler the whole way @ 70-75mph.

The return trip home I was by my lonesome at roughly the same speed (2am) and got only 49mpg

Aerodynamics had everything to do with it IMHO

 

A slight exaggeration with the 3x part


stock engine with head gasket and I still log 31mpg on the highway

 

You might just be surprised how much fuel you can save if you slow down. MPH made a HUGE difference in my MPG when I had my Insight.

 

All I know is how pissed off I am about everyone else trying to save fuel by slowing down in front of me.