Hi Guys,

I recently bought a EL Fairmont Ghia. It has a tickford 6 cyl motor in it.

I fitted a set of Hurricane Extractors, 2.5 inch highflow cat, it has a K&N panel air Filter and an AU XR8 intake snorkel. I have retained the standard exhaust system after the cat.

What sort of Power/Torque upgrade would these mods give over the standard 162kw, 361nm torque.

My second Question is if I fit a set of 17 inch wheels with 235/45 rubber will then ruin the advantage of having the 3.45 diff gears?