Apparently theres a place in Melbourne that will increase the power of the 4.0L up to 175Kw at the wheels (about 230-240kw at the engine)for $4200. No computer upgrades neccessary.
Its basically a full exhaust system, better cam, high flow filter, modified fuel regulator and some head work.
Ill be down in Melbourne in a few weeks and will be further investigating it myself. He's got a test mule EF 5speed with the 175RWKW package and I wouldnt mind going for a spin in it....
If you want the details of this place ill post them up.
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Turbo on the way!!
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