• MRC Tuning doing a single turbo GT45 based R8 4.2 V8 turbo kit

      Turbo kits for the R8 4.2 V8 are nothing new. There are a small handful of options although they all are pretty much stock on stock internals unlike their R8 V10 5.2 counterparts. EVOMS in particular has struggled with the R8 V8 4.2 and turbos so it clearly is not easy to tune for turbos. It is nice to see someone else entering the R8 V8 turbo ring and that would be MRC Tuning with their single turbo based kit for the R8 V8 using a GT45. The other options on the market are all utilizing twin turbos.


      In addition to the GT45 MRC Tuning upgrades the V8 4.2 direct injection system with new LPFP (low pressure fuel pump) and HPFP (high pressure fuel pump) pumps. Those familiar with direct injection tuning know that the fuel system is an area that provides substantial difficult for tuners. Only one company has demonstrated successful R8 4.2 direct injection fuel system upgrades until now and that is EPL (European Performance Labs) who was able to offer a HPFP upgrade for the Heffner Twin Turbo kit which allowed 8.5 psi of boost and a gain of 50 wheel horsepower.

      MRC Tuning is a very accomplished tuner on the Audi and VW platforms so AudiBoost expects them to pull this off. They win numerous tuner of the year awards and also have done a very trick twin supercharged R8 V8 setup which they did the tuning for. It will be interesting to see what MRC Tuning is able to do with this turbo setup, teaser video for now below.

      This article was originally published in forum thread: MRC Tuning R8 GT45 Turbo Kit? started by SpeedLimit? View original post