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2010 Forester
173 Posts
Discussion Starter · #1 ·
On the 2.5X NA engine, is it normal for the power to flatline at around 4500 RPM? When my '10 was new I kept the RPM below 4000RPM until I was over the 1000 mile point. I was pretty satisfied with the power. Recently I've been pushing the throttle up to 5500-6000RPM and the engine whines a lot more with no additional improvement in get-up-and-go. I presume the turbo has extra power at the high end when the turbo is spinning fast.

I have the 4EAT auto tranny. Are the shift points the same between the non-turbo and turbo engines?
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