11 to 1 on pump gas

The people claiming higher compression useage near the ocean do not have Houston heat or constant humidity. California, Oregon, and Maine do not have Houston humidity. (Even the Oregon rains are not the same...the heat in Houston slaps you in the face immediately after sunrise with instant sauna in June, July, August, and September.

- Location: St. Helens Oregon





- Location: Fair Oaks Ca,



I am just going by what others are telling me and what engine builders like MRL and IMM have told me. You do not need to listen to me, my car is also in Ca at Sea Level. I had Kb107 at 0 deck which was actually 10.9 with 62-63cc magnum heads and a xe274.[/QUOTE





My 360 has 10.6:1 static compression and cranks 195-205 psi and runs fine on 89 octane. I have tried 87 but I need to be careful. even on 100+ degree days it runs fine on 89. - Location: Pembroke, MA

Im in san jose and no we do not havw 100% humidity, but we have close to it with 65-75% not like So Cal.