My Car has been doing this for about as long as I've owned it. The low RPM power delivery seems very poor and not linear to me. Between 2000 and 2750 rpm the car seems to load up and be very sluggish to respond to throttle inputs. I also seem to get a bit of a vibration in that RPM range as i accelerate through them. I've logged that rpm range and nothing seems out of the ordinary, no knock, timing looks fine (can't recall the numbers) etc.
Also along with this issue I've never had very good fuel mileage. The best I've ever recorded is 22mpg with it being mostly highway. Normally I average about 18-19mpg.
I've checked the timing belt and all timing marks line up.
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