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Very sensible. Anything north of 300 is a risk worth avoiding. Cosworth suggest 280 to be safe and has been extensively researched by them. Watch this video to know more Martin Sent from my SM-G970F using Tapatalk

The bhp calculation has gone up from 300 to 315bhp at the flywheel.

Apart from the current issue, the supercharger is a fab bit of kit. The integration and installation are very professional. If I sit close to the front offside of the car I can just hear the intercooler pump swishing away when the ignition is on (I was pumping my tyres at the time). Apart from that, the belt is nice and tight and runs true (I had problems with a previous Sprintex charger) and there are no signs of installation nasties. On the road, at low speed I can just feel the effects of parasitic load on the engine but it's not a lot more than, say, turning on the aircon. I guess it may become more evident in summer with the Harrop and aircon both loading the engine. I need the mapping tweaked at low revs above idle to just help the fuelling a little for smoother control. At speed, it's smooth, progressive and gives a hell of a burst of acceleration if I'm hoofing it. 3rd, 4th and 5th are the gears where you can really give it pedal and the rewards are eager torque right up to the red line (I set my light to come on at 7000 rpm). It just feels like a bigger engine - no surprises, no suddenly coming on boost, just a linear shove in the back. Even in the wet, it feels safe and controllable with no surprise snaps. I like the way superchargers feel. On the motorway, 6th is now a very useful gear and if I'm lazy I can keep up with most traffic without the need to drop to 5th. If someone is pulling away, dropping it to 5th is usually plenty. The car is noisier because of the effect of load on the sound and because I went with a UEL manifold. With the TD super-resonator, it's as loud as I would want it. There is no drone at speed but it can get loud on hard acceleration. To my surprise, the 17 x 8 wheels with Michelin 225 PS4s are perfectly balanced for the car. I really don't need more rubber, it's highly controllable and turns in well. Overall, I am well pleased. This is my daily driver and I needed it to work well. You're always going to have some teething issues with boost and I accepted that as part of the deal.