Quote:
Originally Posted by pete c
Maybe I'm missing something here, but as I said before, if 2 engines are the same displacement, the turbo one, if it is making boost is making a lot more power. If you back off the throttle and run it off boost, the NA motor will get better mileage, partly because of the drag of the turbo, but more so because it is a low compression engine.
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Yes, but there's a middle ground. Running just barely any boost and staying out of enrichment.
At 50MPH my Fiat gets 70- 80MPG. My 2 ton van (diesel) gets 60+ MPG @45MPH.
So it's not all bad for turbos, but I'd say the amount of optimization that went into those engines is well beyond what a bolt on DIY kit would offer.