Pajero Owners Club of South Africa

I've read about Freeflow exhaust here sometimes but still don't understand what does it means.
Is it some new system or techniques or some sort of tuning?
Maybe I have stupid questions but could be anybody explain this for me/
Thank you in advance

Please feel free to correct if I'm wrong

The free flow is to let exhaust gasses escape with a certain amount of back pressure required for optimal performance.

Eg,if you increase pipe diametre from 55 to 63mm,the motor would run a bit better,but increase to 70mm would result in loss of torque.

Hope this helps.

Freeflow means there is no restriction through the length of the exhaust.

A free flow exhaust usually refers to the silencer box.

The free flow model has a straight through pipe that is perforated to allow sound to be absorbed like this one.



A normal exhaust has resonator chambers and the exhaust design lets the gasses move through a maze of passages which in turn muffles sound, creates back pressure and robs power in certain conditions and rev ranges.

Thank you for information. Do you know about any company which is providing this kind of exhaust for Pajero 3.5V6 24v?
I'm using K&N air cleaner from beginning, maybe exhaust will help my car as well.
My idea is to use DENSO Iridium spark plugs and NGK ignition cables as well.