Which F23A did you get?
F23A1/4 - 9.3:1 Compression Ratio
F23A5 - 8.8:1 Compression Ratio - this matches our F22A1/4/6 compression ratio.
If you got the A5 this may explain why there is no bump in compression.
F23A1/4 - 9.3:1 Compression Ratio
F23A5 - 8.8:1 Compression Ratio - this matches our F22A1/4/6 compression ratio.
If you got the A5 this may explain why there is no bump in compression.
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