Yup ran 21 PSI no worries on my 20i E89!I had nothing but codes thrown with the GFB on my Alfa, is it pretty reliable on this platform?
An uprated DV ensures more accurate boost control..less flutter at the limits and generally smoother ..at the limit the stock dv looses the ability to hold the required boost ..it’s not going to change the world but removes a potential weakness on the charge side..Thanks again B21 yes Im on stage 2 tuning. What is the effect that you've experienced with the diverter mode ?