MBN Problems....

Its a normal problem it cracks do to high exhaust temps, the housings were known to crack on a 6NZ as well. To stop this you need a older ecm and a different turbo, non wastegated perhaps.

 

Nah once i started to play with mine the stock parts started flying off the motor, when i got the truck it had 80k on the turbo and the exhaust housing was cracked already. Yes if you get a older 6NZ ecm it wont have a 30lb de-rate, the older ecms had a 50lb fuel cut. Also look under your sleeper, i assume this is on a KW you will have dual mufflers, those have catalytic comverters in them, get rid of them.

These are the exhaust sleeves to use....194-8124, also you will have to do some grinding one the manifold to make it fit by the thermostat housing.

 

Well i put a different turbo on at the same time after i already had the big injectors in, my pyro temps dropped about 200-250*F, engine will change tone completley, and definetley feel more top end power. The only draw back is since you are relieving back pressure your jakes will get a bit weaker, i really didnt notice much of a difference though.

The wires will work well, the fuel temp wire will work on the MBN ecm just not the boost wrie, i would only get the fuel temp wire as its the only one worth the power unless you want response and a bunch of smoke, then get the boost wire. I use to run the boost wire with the injectors but took it off as i was already blowing lots of soot and the wire only made it worse, had elevated soot levels in my oil. Once i took the boost wire off its back to normal..... Now i dont think you will have that problem with stock injectors.

 

We have a pile of those housings in the scrap pile in the back shop. Changing the turbo to something other then a cat turbo is our solution

 

Only thing that you can probably get away with is injector trim codes, i suggest having them set to 6999. As far as FTS or FLS settings i would cintact DDS on this board he will set you up.... I could give you some settings but you wont be able to set em without a password.

If you can find it get a C-16 7CZ ecm, this will give you ultimate power, if not have yours flashed to this program. If not get your hands on a 550hp 6NZ C-15 or 3406E 2WS ecm.