Are there any differences between the us spec h23 and the jdm h23? i cant seem to find specs that show different power levels anywhere. I’m very new to Honda but I thought that the jdm versions of Honda engines produced more power than us versions due to things like higher compression ratios etc… Every time I look up specs on a jdm h23 its identical to the specs I see for the us version? Are there any differences between the h23 jdm engine and the us version like with the h22? The reason for me asking is I just bought my friends 92 prelude that has a swapped jdm h23 in it and I am curious of what my starting point is for power.