I love how they quote 6bhp extra.
If you look at their power graph it shows the car already has a 4-1 manifold, sport cat, cat back exhaust and even a remap lol
Waste of time and money.
Just get an air filter, will give you roughly the same gains with half the hassle and expense
To be fair the graph clearly states the difference between the 2 cars is just the filter. But I do agree that anyone wanting a filter purely for performance gains (especially a £120 one) will be disappointed and would be better leaving it standard or something like this...