Quote:
Originally Posted by BAMxi
As of that posting, it sounded like he was thinking the 320i had 11:1 ratio, so he was worried about knocking. I believe it has since been confirmed that both the 328 and 320 are running 10:1.
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Nearly all 20i's have 11:1 compression. The pistons are different. Currently the only 20i with 10:1 compression is found on the X3/X1.