Have aquired this Side exit APEXI Flapper exhaust , orginally from a Skiline & modified to fit a Cossie, Mechanical control in car. Will compare it to a automatic diverter exhaust , purchased from the States, this is fully automatic & makes the exhaust straight through on boost. With this less restricted exhaust & a maybe a cam change should release a fair few more horses. Will keep you posted.SORRY IT AINT BLING