Ok I have put the s475 turbo on with a 5inch intake, Tune has been done for 5inch intake from rob and one from Steve. Problem I am having is the truck runs like crap. If I try to brake boost it it will only rev to about 2,000 rpm's and really smokey and builds no boost, won't even try to brake the tires loose. normal driving I can get it to rev past it but its really smokey and has no power and does not want to lite turbo. I have been throwing p0089 FPR performance codes. Will the fpr being bad make the truck run like this? It would throw the code when the stock turbo was on but never made it seam like it lost power.
