Hey BennyRenny,

I chucked a 2.5" hi flow mandrel bent exhaust on mine from the turbo dump pipe back. This made a noticable difference immediately to the power, I am led to believe that it helps the turbo "breathe" better.(this is what I was told, not to sure of the tech/physics behind it!) Some people I spoke to initially about the exhaust upgrade did mention going to a 3" but I had it on good authority that anything bigger than a 2.5" on the 2.8 motor may cause power issues. Something to do with back pressure or something.

I also have a safari snorkel, and safari airbox with a K & N filter in it, which I had fitted not long after I bought it 8 or so years ago, but that also seemed to make a slight difference(I don't have any dyno figures or anything to back it up) it just felt a little more grunty. Some people are dead against the K & N's but in my humble opinion, if you maintain it and keep it oiled properly you shouldn't have any problems.

Hope this helps a bit!