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Message: <blockquote data-quote="clanbuster" data-source="post: 3933856" data-attributes="member: 77719">My setup:L15A stock engine , no internal mod1 x TD04 start boost at 1900 RPMMax boost 0.6 BarStock injector but extra 1 injector before trottle body.AFR: 14.7 at idling0.6 bar AFR around 12.1My tunner told me that my fuel pressure is enough and don't need to add any fuel pump and regulator.But some other workshop said must increase.Question 1: what is our stock fuel pressure?Question 2: If i increase pressure, does it mean fuel comsumption will increase?Question 3: what is the best pressure for my current setup?for question 2, i have doubt, because one of the workshop told me it will not drain more fuel. He gave me a example: If i turn on the tap water and ask me to time how long to fill up a pail and compare to those pressurize car wash, which one fill up faster. I tried and result is direct tap fill up faster. That mean surprise is pressurize water take longer time. So can we apply to fuel? do u buy his idea??</blockquote>

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