bmw e34 540/6 v8 powerflow exhaust, de-cat lpg 155mph rrs rolling road services HD

we did a test run with baffles fitted in the de-cat pipe, car produced 218.5bhp @ torque 255lbf-ft 138mph. after removing the baffles the car produced a shocking 67.5bhp more!!! the baffles are in the bin, output 286bhp @torque 290lbf-ft 155mph. all test runs were done in 5th gear. theres still drops on the graph report so still got to find a few more ponies so watch this space