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The Terminator
Engine/Tuning
Fuel system problems - injector and fuel pump duty cycle
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<blockquote data-quote="HPLouis" data-source="post: 16216105" data-attributes="member: 5445"><p>My datalogs from last night with a 3.1 pulley, JLT RAI, MRT catted H and Borla S type catback. This is from a second gear pull to redline on the highway.</p><p></p><p>[ATTACH=full]1578427[/ATTACH]</p><p></p><p>[ATTACH=full]1578428[/ATTACH]</p><p></p><p>[ATTACH=full]1578429[/ATTACH]</p><p></p><p>[ATTACH=full]1578430[/ATTACH]</p><p></p><p>[ATTACH=full]1578431[/ATTACH]</p><p></p><p>[ATTACH=full]1578432[/ATTACH]</p><p></p><p>As you can see, where I was maxing out with the 2.76, now it's happening with the 3.1. The injectors are at 100% and the fuel pump is at 98%. I don't know if the fuel pumps are getting tired and old, or if there's something else going on but over the past year, the duty cycle has climbed up as I've lowered the boost. I don't get any check engine lights or anything and the fuel pressure across the injectors are staying steady. I also put a new, rebuilt, Ford alternator (bought from the Dealer) in the car because I thought the old one was going out but this new one still puts out the same volts as the old one. </p><p></p><p>Does anyone have any advice or experience with this? Thanks</p></blockquote><p></p>
[QUOTE="HPLouis, post: 16216105, member: 5445"] My datalogs from last night with a 3.1 pulley, JLT RAI, MRT catted H and Borla S type catback. This is from a second gear pull to redline on the highway. [ATTACH=full]1578427[/ATTACH] [ATTACH=full]1578428[/ATTACH] [ATTACH=full]1578429[/ATTACH] [ATTACH=full]1578430[/ATTACH] [ATTACH=full]1578431[/ATTACH] [ATTACH=full]1578432[/ATTACH] As you can see, where I was maxing out with the 2.76, now it's happening with the 3.1. The injectors are at 100% and the fuel pump is at 98%. I don't know if the fuel pumps are getting tired and old, or if there's something else going on but over the past year, the duty cycle has climbed up as I've lowered the boost. I don't get any check engine lights or anything and the fuel pressure across the injectors are staying steady. I also put a new, rebuilt, Ford alternator (bought from the Dealer) in the car because I thought the old one was going out but this new one still puts out the same volts as the old one. Does anyone have any advice or experience with this? Thanks [/QUOTE]
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Fuel system problems - injector and fuel pump duty cycle
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