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...80 psi is more pressure than what you want with stock injectors and a basic rule of thumb is anything over 70 psi will not yield any performance increase and will usually only result in a decrease in fuel mileage...
How does the high pressure cause a decrease in fuel mileage?
How does the high pressure cause a decrease in fuel mileage?
Not sure but it might have something to do with how split shot injectors work. Mileage figures on my most recent tank of fuel seems to validate Bob's statement as well.
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