also meant to add ,check your getting full rev ,as RSL cable seize ,should rev to roughly 2200 ,if only getting 1500 revs ,generally RSL cable ,or wiring to RSL motor ,also check throttle pedal and cable are free..also make sure all intercooler pipes are ok ,and check exhaust brake ,though that sound unlikely as you say no smoke ..after all that you'r probably looking at a fuel fault ..easiest option if doing it yourself ,remove injectors and get them checked ,at a specialist
norb
August 2010