A little late perhaps but the exhaust valve opening by default is already figured out: put the car in sport(+), rev it a few times untill valves open, find the right side exhaust end & muffler, just a few inches under there you will find a valve with a connector, disconnect the connector cable when valve is open and tape it (for care), also close off the other side (tape) and tie wrap the cable to prevent it from damaging. The valve should be open all times now.
(Found this elsewhere in this forum, havent tried it yet
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