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2011-2014 Mustangs
Power-Adders
Single Turbo 7675
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<blockquote data-quote="corepwn" data-source="post: 14998046" data-attributes="member: 110539"><p>The supercharger did not apply pressure to the exhaust valves, which is why you can make 1000rwhp on a stock valve spring blower car but the smaller single turbos create a lot of back pressure in the exhaust and cause the valves to float.</p><p></p><p>JPC recommends the Trickflow valve springs for this reason. I think anyone selling the 76/75 turbo kits without being upfront that the back pressure will screw you above a certain power level without higher pressure valve springs installed is just misrepresenting their product. The downside is that the valve spring upgrade is a pretty heavy job and will add a lot of cost to these kits if the owner can't do the job themselves, so I can see why it goes unmentioned.</p></blockquote><p></p>
[QUOTE="corepwn, post: 14998046, member: 110539"] The supercharger did not apply pressure to the exhaust valves, which is why you can make 1000rwhp on a stock valve spring blower car but the smaller single turbos create a lot of back pressure in the exhaust and cause the valves to float. JPC recommends the Trickflow valve springs for this reason. I think anyone selling the 76/75 turbo kits without being upfront that the back pressure will screw you above a certain power level without higher pressure valve springs installed is just misrepresenting their product. The downside is that the valve spring upgrade is a pretty heavy job and will add a lot of cost to these kits if the owner can't do the job themselves, so I can see why it goes unmentioned. [/QUOTE]
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