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The Terminator
Engine/Tuning
04 Cobra possible fuel issue | Data log attchaed
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<blockquote data-quote="Blown38" data-source="post: 16788148" data-attributes="member: 88849"><p>The injector pulse just means the injector needs to stay open longer to hit the AFR the EEC is commanding. Your tune is commanding 12.0 AFR so that could be cleaned up some.</p><p></p><p>If the injector duty cycle is getting up there then they won't be able to compensate any more. Like say it gets cold outside.</p><p></p><p>I havent messed with returnless enough to know if it is typical for the pressure drop across the inj to fall off over time, but the pump is not maxed yet so....</p><p></p><p>You could put a FP gauge on the rail to check if it is staying strong. The external gauge should read boost psi amount over 40psi. IE 16 pounds of boost the fuel pressure should read 56psi.</p></blockquote><p></p>
[QUOTE="Blown38, post: 16788148, member: 88849"] The injector pulse just means the injector needs to stay open longer to hit the AFR the EEC is commanding. Your tune is commanding 12.0 AFR so that could be cleaned up some. If the injector duty cycle is getting up there then they won't be able to compensate any more. Like say it gets cold outside. I havent messed with returnless enough to know if it is typical for the pressure drop across the inj to fall off over time, but the pump is not maxed yet so.... You could put a FP gauge on the rail to check if it is staying strong. The external gauge should read boost psi amount over 40psi. IE 16 pounds of boost the fuel pressure should read 56psi. [/QUOTE]
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04 Cobra possible fuel issue | Data log attchaed
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