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Cobra Forums
2013-14 Shelby GT500
Boost and vacuum problems
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<blockquote data-quote="impactblue" data-source="post: 15062412" data-attributes="member: 154785"><p>So I've been building my car for I think almost 2 years. It's started to come together but naturally I'm running into a few problems. </p><p></p><p>I'm getting a code for "sip" sensor on the egr. You can actually hear what sounds to be an exhaust leak coming from the egr. New egr is on its way now. At idle the car sits at 9 inhg so obviously I'm seeing a vacuum leak. I've checked it with 2 different mechanical gauges. Don't know if this is related to the egr </p><p></p><p></p><p>I went to have the car tuned and unfortunately only made 740ish rwhp. I was expecting a lot more out of my car. Tuner told me I'm loosing boost. It actually hits 20psi at around 4000rpm but was around 15psi at redline. With no evidence of belt slip as I have a stock upper pulley as well </p><p></p><p>This could be egr related as well?? Another possibility I was thinking of was maybe my bypass valve is having problems because of the vacuum leak? </p><p></p><p>Any helpful advice is appreciated! <img src="http://images.tapatalk-cdn.com/15/10/20/edb47ef39da19a0fb7968a7336363687.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /><img src="http://images.tapatalk-cdn.com/15/10/20/b87a3aaeafeebde9de6a8b3fade5e13e.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="impactblue, post: 15062412, member: 154785"] So I've been building my car for I think almost 2 years. It's started to come together but naturally I'm running into a few problems. I'm getting a code for "sip" sensor on the egr. You can actually hear what sounds to be an exhaust leak coming from the egr. New egr is on its way now. At idle the car sits at 9 inhg so obviously I'm seeing a vacuum leak. I've checked it with 2 different mechanical gauges. Don't know if this is related to the egr I went to have the car tuned and unfortunately only made 740ish rwhp. I was expecting a lot more out of my car. Tuner told me I'm loosing boost. It actually hits 20psi at around 4000rpm but was around 15psi at redline. With no evidence of belt slip as I have a stock upper pulley as well This could be egr related as well?? Another possibility I was thinking of was maybe my bypass valve is having problems because of the vacuum leak? Any helpful advice is appreciated! [IMG]http://images.tapatalk-cdn.com/15/10/20/edb47ef39da19a0fb7968a7336363687.jpg[/IMG][IMG]http://images.tapatalk-cdn.com/15/10/20/b87a3aaeafeebde9de6a8b3fade5e13e.jpg[/IMG] [/QUOTE]
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2013-14 Shelby GT500
Boost and vacuum problems
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