Quote:
Originally Posted by oldtamiyaphile
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.
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A diesel is a whole different story. A turbo increases power and mileage. Remember the difference. Power is controlled by fuel, not air. There is no 14/1 ratio to maintain. This is why basically every single diesel made today that makes more than 50 hp uses a turbo.