Topgunz has two cold side exits instead of a coupling. The piping and intercooler are larger. The oil cooler for the unit is also substantially larger. These are all items that support more power at lower boost, keeps the oil cool for the unit, and better power scaling; especially at higher boost levels.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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