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2011-2014 Mustangs
2011-2014 Mustang Talk
Twins vs single?
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<blockquote data-quote="CPRsm" data-source="post: 13413555" data-attributes="member: 81705"><p>CSG is right. Twins can be smaller in size, but has half the energy to apply force on the turbo. Singles have more preturbine volume which lowers back pressure and can slow spool. Twins can be the opposite. The sooner u pressurize the hotside the sooner stuff spins. There is more to it than that generally. How kits are built are just as important. I prefer a big single. In this chassis you can fit a 5in down pipe which is larger in volume than twin 3in down pipes. This helps spool and relieves back pressure as well. </p><p>Post turbo volume is a big one as well. Longer it takes, the longer time to torque. For twin or single. Single will generally win here. Intercooler size is a determining factor. Use a small cooler and spool faster. If it's too small, the power starts to drop the longer you're on it because of rising inlets. We've been able to spool faster than any twin on the market by a few hundred rpm. and even faster yet with an air to water intercooler. So it being twins is not an automatic win there.</p><p>Twins do not also automatically mean more power. Power comes from efficiency. Where your plot is on a compressor map, if the AR housing is sized right, can the turbine process enough exhuast? Long story short it comes down to more than one or two turbo lol</p></blockquote><p></p>
[QUOTE="CPRsm, post: 13413555, member: 81705"] CSG is right. Twins can be smaller in size, but has half the energy to apply force on the turbo. Singles have more preturbine volume which lowers back pressure and can slow spool. Twins can be the opposite. The sooner u pressurize the hotside the sooner stuff spins. There is more to it than that generally. How kits are built are just as important. I prefer a big single. In this chassis you can fit a 5in down pipe which is larger in volume than twin 3in down pipes. This helps spool and relieves back pressure as well. Post turbo volume is a big one as well. Longer it takes, the longer time to torque. For twin or single. Single will generally win here. Intercooler size is a determining factor. Use a small cooler and spool faster. If it's too small, the power starts to drop the longer you're on it because of rising inlets. We've been able to spool faster than any twin on the market by a few hundred rpm. and even faster yet with an air to water intercooler. So it being twins is not an automatic win there. Twins do not also automatically mean more power. Power comes from efficiency. Where your plot is on a compressor map, if the AR housing is sized right, can the turbine process enough exhuast? Long story short it comes down to more than one or two turbo lol [/QUOTE]
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Twins vs single?
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