I have suggested to ian to keep the pugsport inlet and use the j4 exhaust, with the inlet retarded to achieve the same overlap as a standard j4. The reason being with a boosted engine you can keep the inlet valve open for longer without the piston pushing fresh charge out of the inlet valve (miller cycle style) as the pressure differential across the valve is higher. Also the exhaust cam is kept short as you dont want to open the exhaust valve too early and loose some of the combustion pressure and raise exhaust gas temps too much while retaining a sensible amount of overlap. The standard j4 cam profiles are actually quite long in duration compared to modern downsized highly boosted engines.
Ideally you would want a little more lift than the pugsport and j4 profiles while keeping the duration the same, but this will mean a very aggressive lift rate which will increase valve train wear.
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