Redline, I've said it a hundred times now

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My friend, with a stock 305TPI & automatic transmission...he installed edelbrock headers & highflow y-pipe, cat & muffler....he had the car dyno'd.</P>
Then he installed a cut-out, infront of his cat..he dyno'd his car again and GAINED 20 REAR WHEEL HP

Also he gained 8 REAR WHEEL TORQUE. THIS was with an ALREADY HIGH FLOW EXHAUST!</P>
I can only IMAGINE the gains you will see on a dual exhaust car with cut-outs...it must truly be JAW dropping.</P>