I put a bar and plate cac in my truck a few months ago. Egt went up as did coolant temps. I think that design is to restrictive to the air flow through it. I have a duralite on the way. With temps like they are now you really have to pay attention to the gauges.

Originally Posted by pydpypr

Yes my ecm has the latest greatest cat file, it was already in there when i bought the truck. My cac is brand new less than one year old. It is a one piece welded bar and plate design, iam not sure how efficient it is. I thought about tossing it for a duralite since that is what alot of guys running high power are using. I also thought about PDI cac but i don't want to pay that much. My cac was just tested and had zero leakdown. I know my egt is within tolerated specs. But i also know it has decided to suddenly rise up from where it usually runs.
Something else i forgot to mention. When my overhead was adjusted the mechanic asked me how long since the last overhead and i told him it was less than a year. The reason he asked is the intake setting was so low he couldn't get a feeler gauge in to measure it. What would cause it to be so far out of adjustment in less than a year? Now that it is set right could that have caused my egt to rise?

if you mean latest cat file from a cat shop that right there has alot to do with your issues. the tight valves probably wasnt adjusted right the first time. when valves work they wear the seats and valve causing the gap to get tighter. it's normal. test the cac again if it isnt leaking dont worry about it. i would say from what you have posted it is two things turbo and ecm programing,

Hello, I recently installed pdi Stage 1 turbo after the stock one failed on my reflashed mbn motor, it now has a 6nz 550hp brake saver file, with fts/fls numbers both at 0. I'm now getting higher exhaust temps and I'm making slightly lower boost pressure, also there's a whine that comes from the air cleaner canisters. Before installing the new turbo I flushed the charge air cooler and blew out all air piping. I also cleaned out the air cleaner canister and changed the air filters. My old air filters were fleetgaurd and the new ones are donaldsons. Any ideas? I was under the impression the new turbo would make higher boost and lower egt's.

Thanks, Brent