Bit of an update on something I haven't revealed before for various reasons. Before Greg thought about putting the car on the dyno he did a compressions test, as he won't map an engine that isn't healthy, makes sense I guess. Turned out cylinder 4 was losing 20% or so compression which is not good. Anyway, I was going to get him to do the work to rectify it but he went quiet, not sure why. So I got in touch with Tim at Race Developments. After a long chat with him and Ricky Elder (ex Audi UK development engineer on the R8 and TTRS projects) I decided that they would do the work. So the head has been off and a lot has been replaced. It's had new plugs, ARP stud kit, all seals replaced including turbo seals, valve stem oil seals and so on.
Ricky said the head was coked in carbon and had all the signs of a poor map. I'd had a lot of reservations about the map in all honestly, guess I never admitted to myself fully that it wasn't perfect. Anyway, it's done now and I am very happy with the work. Mase is over at the moment and he's mapping it tomorrow morning. I'm really looking forward to getting a map that isn't hesitant part throttle and doesn't surge! I guess this shows that you really need to pick your tuner wisely and spend a lot of time reading into it.
Almost forgot, I will have some new brakes coming soon in preparation for Spa.