I have a 2007 dodge 6.7 megacab and wanted to get some prices and opinions on deletes. I already have a smarty (not installed yet), but wanted to know about exhaust and egr and cooler delete. Is the egr and cooler delete necessary? I'm on a slight budget (wife doesn't know). Would I be taking away from mpg and hp if I just did the down pipe and dpf delete versus a turbo back? Any thoughts and prices would be appreciated

Thanks,
Ryan