Leaderboard

I had a Sprintex supercharger previously (and several turbo cars) and preferred the progressive, more predictable and 'big engine' feel of a supercharger. The Harrop is a more grown-up supercharger with its Eaton core and intercooling over the Sprintex and is much quieter in operation (no whine). It also has no lag so, together with the excellent tune from Abbey, responses are lightning fast. There is some parasitic load but it doesn't affect responses and power is up by 50% to just over 300bhp which is plenty. To be honest, it just feels like it's a 3.0l engine. The combination of the excellent OEM feel of the Harrop kit and Abbey's attention to detail in the installation are just what I wanted for a car that is my daily all-season driver.

Probably worth telling Subaru then

Still uses the OEM airbox, so the intake is no lower than stock.

Abbey did the complete install, ecutek licence, mapping etc. similar to Martin in terms of cost. Although the Harrop kit had increased in price by the time I ordered so a little more. I had uprated discs, pads and lines fitted at the same time so breaking down labour is a bit tricky as it was all as one. Would recommend speaking to Scott or Mark at Abbey, both very helpful.

Thanks. They're probably not a good choice for track use, then, whereas they're good for road use where deep heat cycles are nowhere near as punishing.