Thread: Civic Si better than hoped!
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Old 06-07-2016, 09:55 AM   #4 (permalink)
elhigh
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Quote:
Originally Posted by MobilOne View Post
And out of curiosity, why the Shell premium?
11:1 compression ratio. Reason enough, or at least it used to be.

I imagine the computer would retard the timing if you used regular, though.
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