you want stainless valves and exhaust and unless long runs you won't get time to heat up/run and purge it.

Oh and Mileage increaser's are taxable.

Charge cooling on high performance turbo unit one thing, RV8 WASTE OF EFFORT
 
to be honest nitro in a land rover unless it is very well tunned again aint worth crap either tune the engine done right will give you all the power and mpg you need
 

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