Originally Posted by 550hpW900L

How much? Well its a guy i know getting rid of it, but its the old no nox program, with a lot of timing, the guy put down a hair over 1100hp to the wheels with the 59s, 3406B manifold, stage 5 turbo and 2ws cam. Running a 1LW block, he cracked 3 5EK blocks.

Just shows how hard that ecm is fueling that motor, not only that hes "only" running 45psi of boost, i already hit the 50psi cut on mine and bypassed it.

But i might be able to talk him down to $1500.

Asked him to tell you the flash # and I will tell you if it's a good deal.

What do you meen by 59s

Originally Posted by kenworth9

For those of you who own a bridge engine. You can installed an air regulator between the fitting on the cylinder head and the boost sensor and set the air regulator to a maximum air pressure of 31lbs. So the ECM will see the real boost pressure until it reach 31psi and then if you have 34psi or so on it will not derate the engine and logged code 25, boost pressure not responding properly.

Kenworth9, could you or 550 tell me if setting this regulator at 31psi is critical; reason for asking is a friend at one of the plants can get me a regulator but max setting is 30psi. doesn't really matter, I guess, cause they're real cheap, just curious. Also looking at my fitting, behind the air compressor, it looks to be that o-ring type screwed into the manifold, then converts to 1/4" pipe; is this where you hookup the reg.?
Sorry for all the dumb questions, but this modification stuff is new to me, and once again thanks to all for the help!

Guess I should start another thread, but this is mostly directed to "Mr. Cat/KW Guru", the most honorable 550
You previously mentioned that your W900 formerly MBN motor had the stock KW mufflers that had the catalitic converters in them. My 2004 has two under the sleeper one near each fuel tank; are those what you were referring to? Mine are LOUD, producing a constant roaring sound in the cab when RPM is above 1400. Decibel wise, I'd say engine brake is very near straight pipe sound, (2 warnings from small town cops so far). I'd like my truck to be quieter, but without sacrificing backpressure. I was actually thinking of replacing them with two of the older KW under sleeper mufflers. My '96 W900 with a 3406 475 had one; it was quiet, but had a lot of backpressure, I don't think I'd have a backpressure problem running two, but they're about $400.00 each.
Just wondering what your thoughts were about that. I know you're a loud pipe kinda guy, but I'm an old fart (55 y.o.) and enjoy the quiet, and a little soft music.

Droy I tried to PM you but when I tried to submit, it said I need to have 50 post to PM you.