I see in alot of posts showing number of boost being thrown around and what fuel you can run with it or if the engine will take it. I would just like to remind everyone that that boost number means nothing unless the accomponing data is with it such as altitude, humidity, temp, intake air temp, etc. Using the absolute boost as a number is much closer but still does not compare exactly. I have seen guys saying they can run 16lb of boost. No problem at 10,000 ft but at sea level it probably won't last. Just FYI for some of the guys that don't know already.
Boost pressures explained
- Thread starter allblowdup
- Start date
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yamazoom
Active member
To add to your point, for every 2,000' increase above sea level you will loose nearly 1 point of atmospheric pressure. The best way to look at this is, if you are riding at 10,000' and running at 5 pounds of boost, your engine will have a very similar power output as if you were riding at sea level. Atmospheric pressure at sea level is approximately 14.7 PSI, atmospheric pressure at 10,000' is closer to 10 PSI.
Thanks for posting that up! I ride at sea level and the boost info in these threads is pretty much useless to me most of the time without that little bit of extra info.
Yup, but man at 16 lbs at sea level your sled will really rip but only for a bit. I could run 12 psi at 2000 ft on c14 all day 14 seemed to be ok but at 16 psi on a dragon 700 even with the intercooler,the head would start to lift and I would blow an o ring. I won't even talk about what happened at 20 psi (by mistake) but the motor still wasn't toast just o rings. Man it was fast for that time though.
What the gauge says makes no difference to me. I try to tune based on absolute pressure to the motor.
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