the booster supposidleyt adds 5 points. Actually I got the octane booster from my mechanic for free. Also Im realizing now that I have the pressure gauge on, I can spray when its in the green. When I spray when pressure is around 6 then it runs rich. Before I didnt have a gauge so I didnt know the pressure.
What I have noticed is that california's hot weather keeps the pressure in the green zone. I thought it would be hot but it isnt.
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