BMW 525i M20 power output

[mrcrisp]

Hi all. I'm new to this forum.Just thought I would post the spec of my E34 525i with M20 engine.It currently has an ECU chip, and a open cone filter, with stainless heat sheild.Attached is a copy of the power/torque output of my BMW using a road dyno system. This was about the power I was expecting (165bhp - 165lb torque) because there is a dodgy hose to the intake from the idle control (still waiting on delivery of my silicon hose to replace it). The other factor I put down to the open cone filter sucking in hot air. I don't have the stock airbox handy as I would replace it and go do another few runs to see what the powers like.Has anyone else actually got power figures before and after adding an open cone filter?A few weeks and I will be putting on a BMC closed carbon intake, which I hope brings back the power.Thanks in advance for your ideas/opinions.:top: