We have a 2007.5 Dodge Ram Mega cab 2500, we have done an EGR/DPF delete it has a brand new turbo on it. We can NOT get it rev up (RMP will not go up above 1500). We have had the coolers cleaned (dodge dealer told us the cooler was clotted, they also told us to do the EGR/DPF delete). The truck is on its 4th turbo (at 112,000 miles) and been to the local diesel mechanic, the dodge dealer (for 6 months no less) and the auto collage. Everyone assured us the delete will fix the issues. We have no idea where to look or what the issue could be, ANY SUGGESTION?

Thanks in advance,
Dawn