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·i have a stock supra mk4 going to make it bpu sick of its launch 0-60miles i just order a downpipe, exhaust,bcc,intake ,intercooler,manual boost greddy,cam gears ,boost guage.. i wana know how many hp i am gona gain in 16psi and how many secs from 0-60miles .and quarter mile how much its gona be. thanks