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SVTPerformance's Chain of Restaurants
Tuning À la carte
SCT Prp help
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<blockquote data-quote="01blckcobra" data-source="post: 16039388" data-attributes="member: 92039"><p>03 cobra AMZ2 return style fuel system, unleaded. rc750, hpx 4"</p><p></p><p>Having issues with the A/f leaning out at WOT 4k and above. I replaced the regulator but forgot what the base pressure was at. A/f looks like the Rocky Mountain Range, from start wot (.775) to as high as 1.15 a/f. Commanding .773 </p><p>Looking through the tune on SCT Prp, Under Fuel injectors - Pressure drop across Injectors is set at 37psi. Now under Returnless fuel pump - Desired Pressure Drop Across Injectors is 49psi. </p><p></p><p>Had base pressure set to 49psi. Car still leans as much as 1.15 at Wot. Tried base of 52psi same results.</p><p></p><p>New to tuning so have no Idea what any of this means or if any of this matters with a return style fuel system.</p><p></p><p>Or do I need to play around with the base pressure to find the sweet spot again?</p><p></p><p>The car still has the FRPS intact. Guessing the tune is based on what the FRPS sees, but not sure.</p></blockquote><p></p>
[QUOTE="01blckcobra, post: 16039388, member: 92039"] 03 cobra AMZ2 return style fuel system, unleaded. rc750, hpx 4" Having issues with the A/f leaning out at WOT 4k and above. I replaced the regulator but forgot what the base pressure was at. A/f looks like the Rocky Mountain Range, from start wot (.775) to as high as 1.15 a/f. Commanding .773 Looking through the tune on SCT Prp, Under Fuel injectors - Pressure drop across Injectors is set at 37psi. Now under Returnless fuel pump - Desired Pressure Drop Across Injectors is 49psi. Had base pressure set to 49psi. Car still leans as much as 1.15 at Wot. Tried base of 52psi same results. New to tuning so have no Idea what any of this means or if any of this matters with a return style fuel system. Or do I need to play around with the base pressure to find the sweet spot again? The car still has the FRPS intact. Guessing the tune is based on what the FRPS sees, but not sure. [/QUOTE]
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SVTPerformance's Chain of Restaurants
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SCT Prp help
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