where are you shifting to get optimum gas mileage?

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Feb 25, 2004 | 03:07 AM

#41

sryth

Newbie - Just Registered

Joined: Oct 2000

Posts: 1,420

From: Poughkeepsie, NY

You are correct. Tire inflation will alter actual speed. The speedometer simply measures the rotational speed of the axles.

The only way to calculate a theoretical top speed in a given gear would be to consider the tire inflation. This usually sucks and produces inaccurate results.

The only other way to tell is to get out there with a radar gun. I don't have one, so I stick to the crude math

Feb 27, 2004 | 01:37 PM

#42

PLUMMAXSE

Supporting Maxima.org Member

iTrader: (2)

Joined: Dec 2002

Posts: 707

Quote:

Originally Posted by Dave B

For those you that can go over 100mph in 3rd, either you're an automatic or your speedometer is off. It's impossible to any faster than ~96mph in 3rd with the stock rev limiter

With my 7000rpm limiter, I can only do ~102mph in 3rd.

As for shift points and MPG, I shift my 1-2 at approximately 4000rpms, the 2-3 at ~3800rpms, and the 3-4 at approximately 3000rpms. A lot of the time I go directly from 2nd to 4th. I tend to play around in 2nd and 3rd quite a lot revving it to 5000-6000rpms a few times a day. I usually get 22mpg with 80% city and 20% highway. I usually get 26-27mpg in straight highway driving.

Dave

My speedo is actually right on the money according to my Garmin GPS! Next time I'll test the car by going max in 3rd gear and logging max speed on the Garmin. It could be 96mph but thats a lot more than 80.