Quote:
Originally Posted by wwest
Since my '78 Targa, 180HP, will get ~20 only above 90MPH I find it difficult to believe a TurboCharged engine running off-boost, detuned/derated mode, would do the same. 20% less, ~16MPG, at best.
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Believe it. I get 20ish plus all day long in 4th at 65 MPH limit on the freeway.