3406E. Boost

@pushbroom @spsauerland
40psi of boost is pretty strong. If you had a cat house put a file in that would be a lo-nox file.

 

Yep that's hp.

 

40lbs is nuts. 22lbs from factory. Even at the 550 rating they only run 26 or 28.
Wasnt til the 6nzs they started running 35 or so.
Didnt crack 40lbs boost until the twin turbos came out.

 

If you have the factory waste gated turbo then you must have the wastegate line pinched off.

There is no way it would make that kind of boost stock.

40 on a stock turbo and your pushing it.

 

I’m seeing 32-36psi with a 78mm on a lo-nox 550 file.

 

Perfectly normal with a non WG turbo.

40 is not normal with stock turbo

 

You know that your truck isn’t going to pull an 8% grade @ 80,000# as fast as your diesel pickup pulls your 8000# camper right?

 

What was the boost before the upgrade ? And what hp was it stock before ?

 

That's about normal, even with a bigger turbo, my Borg does maybe 45 psi and mine was a 550 stock and has the 6999 injector codes. You go down the "need more power" rabbit hole and there's no turning back. I'm sort of looking for a little bigger injectors, maybe a cam, of course then I'll need an even bigger turbo, it never ends if you don't stop yourself.