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The Terminator
Engine/Tuning
Fuel Pressure Spike, but going lean
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<blockquote data-quote="black03" data-source="post: 10708097" data-attributes="member: 4037"><p>How many psi of boost are you pullied for and where are you reading the fuel pressure from? </p><p></p><p>Your fuel pressure should go up 1psi for every 1 psi of boost you are making. So if you run a 40psi base pressure and you're running 20psi of boost the peak pressure should be at 60psi. For you to be getting 75psi fuel pressure doesn't seem to be right unless you're running 35psi or you're getting an incorrect reading. Also to lean out with 75psi doesn't make sense as well unless you're out of injector. If pressure is there and the injectors are keeping up with the demand you shouldn't lean out. That takes us to the next question of what is your A/F and how are you getting that reading? Tailpipe sniffer or is the sensor installed in one of the bungs on your midpipe? Who's tuning the car? </p><p></p><p>Once you give me a little more info I can help you better. </p><p></p><p>Thanks, Jared</p></blockquote><p></p>
[QUOTE="black03, post: 10708097, member: 4037"] How many psi of boost are you pullied for and where are you reading the fuel pressure from? Your fuel pressure should go up 1psi for every 1 psi of boost you are making. So if you run a 40psi base pressure and you're running 20psi of boost the peak pressure should be at 60psi. For you to be getting 75psi fuel pressure doesn't seem to be right unless you're running 35psi or you're getting an incorrect reading. Also to lean out with 75psi doesn't make sense as well unless you're out of injector. If pressure is there and the injectors are keeping up with the demand you shouldn't lean out. That takes us to the next question of what is your A/F and how are you getting that reading? Tailpipe sniffer or is the sensor installed in one of the bungs on your midpipe? Who's tuning the car? Once you give me a little more info I can help you better. Thanks, Jared [/QUOTE]
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Engine/Tuning
Fuel Pressure Spike, but going lean
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