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EX & LX Cruise at different RPM's

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    #1

    EX & LX Cruise at different RPM's

    MY 1991 EX Cruises 70mph @ 2850rpm

    My 1990 LX Cruises 70mph @ 2500rpm

    Can I simply change the ECU on my EX so it will run out at a lower rpm?
    My gas mileage is nowhere near where it needs to be, I only get 23 at best.
    '91 EX 280,000 || '90 LX 330,000
    _____(me)__________(wife)___

    Tags: None
    #2
    its the transmission. EX is H2U5 LX is H2A5.
    COUPE K24

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      #3
      whats my cruise rate i have a 92 lx auto

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        #4
        Originally posted by real_mckoy View Post
        whats my cruise rate i have a 92 lx auto
        Go cruise at 70 mph and u will find out.
        1993 10th Anniversary MRT

        Originally posted by The G-Man
        For that money, yes. But my dick isn't big enough for that shit.

        List of all my cars to date

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          #5
          Originally posted by BurninCB7 View Post
          MY 1991 EX Cruises 70mph @ 2850rpm

          My 1990 LX Cruises 70mph @ 2500rpm

          Can I simply change the ECU on my EX so it will run out at a lower rpm?
          My gas mileage is nowhere near where it needs to be, I only get 23 at best.
          To easily get any car to turn less RPM bump up the tire circumference.

          What do you think your MPG is supposed to be? Look here for realistic figures http://www.fueleconomy.gov/feg/noframes/7794.shtml

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            #6
            Originally posted by 92exa6 View Post
            To easily get any car to turn less RPM bump up the tire circumference.

            What do you think your MPG is supposed to be? Look here for realistic figures http://www.fueleconomy.gov/feg/noframes/7794.shtml
            Thanks for the link, good info there.

            So you are saying bigger tires will give me a lower cruising rpm. That makes sense to me, although I never would have thought to do that!

            I have planned on buying new tires at the end of this month, so I will consider upsizing. Does anyone know the largest tire size that will fit in a 1991 EX sedan? I want tall and as wide as I can go.
            '91 EX 280,000 || '90 LX 330,000
            _____(me)__________(wife)___

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              #7
              Originally posted by 92exa6 View Post

              What do you think your MPG is supposed to be? Look here for realistic figures http://www.fueleconomy.gov/feg/noframes/7794.shtml
              I want my EX to get at least 25... It has gotten as bad as 19 before, but I had a bad o2 sensor and a CEL. I think it would help if it ran out at a lower rpm. I recently checked/adjusted my timing, that seemed to yield me about 2-3 more mpg. I was pretty stoked about that!
              '91 EX 280,000 || '90 LX 330,000
              _____(me)__________(wife)___

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                #8
                your only gonna get a few hundred rpm lower than you normally would. its not worth the inaccurate odometer and speedometer. i pulled 31 mpg pulling an empty trailer with my coupe going 75 the entire way. thats with the rpm at 3k the entire time.
                COUPE K24

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