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It wasn't an exact test by any means, but I seemed to have gotten worse fuel economy driving with the turbo. Of course, I did kind of have a little more fun with the turbo than maybe I should have. Maybe a really smart intelligent driver could utilize the turbo in a way to increase fuel economy, maybe it's just strictly better to drive without the turbo. I've heard that turbo-charged engines have to lower their compression ratio to sort of compensate for the added power of the turbo. I don't know. I do know that the turbo version of the sprint is rated at a lower MPG than the regular version, and of course, the coveted ER version. I think I might try advancing my ignition timing on my next trip, and hope I don't inject the turbo or else in theory I might get engine knock and pinging and exploshions with an h. I'll probably forget to try that. Eh, maybe I'll just advance the timing during this tank. My last tank was 41 and I'm hoping to get at least 43mpg.
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