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SVTPerformance's Chain of Restaurants
Tuning À la carte
Fuel pressure gauge won't read over 40 psi
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<blockquote data-quote="bergs" data-source="post: 14196584" data-attributes="member: 77705"><p>I put the gauge in years ago and was worried that it read low so I went back to my tuner and he dyno'd it and logged the fuel pressure. He said it looked good, see the graph below. back then it would read 40 psi at WOT and jump up when I shifted. now it reads 35 psi at WOT and only jumps up when I shift sometimes. back then at idle it would be at 28-30 psi, now it reads 20 at idle. My system is stock with GT supercar pump in the stock basket and 42 lb/hr injectors. My tuner said it was maxing out the pump at 6000 rpms but below that it was ok. I took off the sensor to see if there was any junk in there and it was clean. I'm hoping it is a bad sensor and I can just replace it. I have an SCT X3 can I watch fuel pressure on it as I drive? I really never used it. I don't use the car a lot so that's why I never looked deep into this but now that the gauge is reading really low I am worried.</p><p></p><p>Here is a vid and some pics:</p><p></p><p><a href="https://www.youtube.com/watch?v=UY0PlcP72zY" target="_blank">https://www.youtube.com/watch?v=UY0PlcP72zY</a></p><p></p><p><img src="http://www.supermotors.net/getfile/1024485/fullsize/photo.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://www.supermotors.net/getfile/1024484/fullsize/photo-4.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://www.supermotors.net/getfile/1024483/fullsize/photo-3.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://www.supermotors.net/getfile/1024482/fullsize/photo-2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p><img src="http://www.supermotors.net/getfile/1024481/fullsize/photo-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="bergs, post: 14196584, member: 77705"] I put the gauge in years ago and was worried that it read low so I went back to my tuner and he dyno'd it and logged the fuel pressure. He said it looked good, see the graph below. back then it would read 40 psi at WOT and jump up when I shifted. now it reads 35 psi at WOT and only jumps up when I shift sometimes. back then at idle it would be at 28-30 psi, now it reads 20 at idle. My system is stock with GT supercar pump in the stock basket and 42 lb/hr injectors. My tuner said it was maxing out the pump at 6000 rpms but below that it was ok. I took off the sensor to see if there was any junk in there and it was clean. I'm hoping it is a bad sensor and I can just replace it. I have an SCT X3 can I watch fuel pressure on it as I drive? I really never used it. I don't use the car a lot so that's why I never looked deep into this but now that the gauge is reading really low I am worried. Here is a vid and some pics: [url]https://www.youtube.com/watch?v=UY0PlcP72zY[/url] [img]http://www.supermotors.net/getfile/1024485/fullsize/photo.jpg[/img] [img]http://www.supermotors.net/getfile/1024484/fullsize/photo-4.jpg[/img] [img]http://www.supermotors.net/getfile/1024483/fullsize/photo-3.jpg[/img] [img]http://www.supermotors.net/getfile/1024482/fullsize/photo-2.jpg[/img] [img]http://www.supermotors.net/getfile/1024481/fullsize/photo-1.jpg[/img] [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
Fuel pressure gauge won't read over 40 psi
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