Ray, I've already removed the mesh from the airintakes, removed the bungs, put 45mm slipons (now a termi 1/2 system) and powercommander with a custom map, as well as a pair of pipercross filters, this has only netted around 5HP (actualy haven't dynoed or remapped since the 1/2 system).
This engine upgrade kit will cost around 1120 all in, and net another 10-15hp - I should be able to sell my 45mm slipons and termi 1/2 system for at least 600, so its basically costing me around 500+labour (needs a service anyway
) for another 10-15hp. Not bad eh