[biggieB15z33]

Ok I did an sr20det swap on my vert and when I apply the brakes and I keep them pressed and rev the engine the brake pedal pulsate/moves up and down, when I rev the engine the brake pedal pushes my foot upwards and when I stop reving the brake pedal returns to the original position, all this is while the car is parked, I didnt have any problems when I had my KA swap,any ideas or solutions????