SteveSS
Well-Known Member
- Local time
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- Joined
- May 28, 2013
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- Location
- Colorado Springs
I've often wondered how our high elevation, I've at 7500' and most of Colorado Springs is 6000' or over affects our engine performance. I've taken some modern high-performance cars down to lower elevations and the performance very noticeably increased. I know our compression is much lower here due to the thin air. At the pump, the highest octane we can buy is 91.
I watched an Engine Masters show where they ran everything from different pump gas octanes up through E85 and Methane in an engine and it didn't make much difference in HP. Right now 91 unleaded is about a buck more a gallon. Right on my gas cap, it says to use premium. Do I really need it? Does our elevation, therefore lack of compression, change things? Like is pinging worse at 7500' than 1500'? I'm not sure I would know what to listen for.
I watched an Engine Masters show where they ran everything from different pump gas octanes up through E85 and Methane in an engine and it didn't make much difference in HP. Right now 91 unleaded is about a buck more a gallon. Right on my gas cap, it says to use premium. Do I really need it? Does our elevation, therefore lack of compression, change things? Like is pinging worse at 7500' than 1500'? I'm not sure I would know what to listen for.