Hi
Firstly, i think a genuine 250 takes quite a lot money and mods
Getting 219bhp out of mine wasn't too bad, but was a lot more to get 243bhp
If this is your first RS turbo i would probably take it to an RS specialist for setting up first and then you can get some ideas of what you need to do next
Originally Posted by
Turbocabbie
I think 246 is very optimistic on MFI myself from experience.
I personally think the realistic maximum on a few good MFI systems is 220 bhp and to exceed that you have to change management or run a fifth injector.
I had to change management to get that kind of figure
i concur
mine did 219 just MFI & 16psi, then 224 with 5th injector & 24psi>17psi
only made 20bhp more with the Cosworth management and 22psi to the limiter