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p12.ecu with f22a1 mpg ?

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    #16
    Originally posted by owequitit View Post
    According to the dyno around here, it only adds about 3WHP to an F22A1.

    Not only would doing the A6 parts on an F22A1 result in more power, it would probably give better MPG as well, at least based on my experience.
    Very true. The difference in power between the Prelude and Accord with the F22A1 is 10hp. The engine itself is the same in both cars. The ECU is probably the majority of the power difference, but the intake and exhaust systems are probably a bit freer-flowing on the Prelude as well.
    Taking into account the age of these engines, drivetrain losses, and the intake/exhaust differences between the two cars... and 3whp sounds about right. Also, with such a minor change in power, a dyno can be inconsistent... and all engines are also subject to atmospheric conditions.

    The fact of the matter is... it's a very minor modification. People act like this is the greatest thing ever. It's a neat discovery... but it's nothing special. The H23 intake manifold is a more significant modification, as far as bolt-on stock parts.

    Originally posted by Losiracer2 View Post
    I had my P13 tuned. Well he removed the speed limiter and changed the VTEC engagement and Rev limiter. Also said he changed the fuel maps for partial throttle cruising so I'd get better highway mpg.
    Yes, there are minor adjustments that can be done... but it's not "tuned" in the same way that you have complete control over a P28, P06, P72, etc... once they're modified properly. Tuning an Accord/Prelude ECU is a waste of money.






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      #17
      I just installed my p12 over Thanksgiving and I haven't noticed any change in mpg yet. I'll have to check my mpg the next time I fill up on gas.

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