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Finally!! This is our brand new single exit ( Center ) mandrel bent 304 grade stainless 3" catback exhaust for the Corolla GR.
We started at 262.4 whp and 243. ft lb of torque.
With our downpipe, catback, intake, and tune we are currently right about 320WHP/320FTLB on standard pump gas, 93 octane.
The catback weighs in at ONLY 17#'s!
This is a killer combination!!