boost psi on 2003 6.0

[cj036.0]

what is the stock boost psi on a 2003 6.0 automatic 4x4 s/c ? Does a 4" magna flow exhaust system make any difference ?

 

[powerboatr]

at 75mph flat ground we noramlly run 10 psi or less, usually less and here lateley when the outside temps have been 60 or less the egts run about 500-650 or so
and yep a freer exhuast will lower egts and possible let teh turbo spool easier which would equate to less lag, but it wont increase boost.
boost is a "on demand" thing
more throttle pressure and load equals more boost in a real simple explanation
but you could be doing 90 and have no real load and boost could be very low
and on the other hand going 40 and pulling a load boost may be 30 lbs

 

[DaveBen]

I have seen 30 lbs in my stock 6.0 with automatic. That is WFO.

Dave

 

[cj036.0]

Thanks for the info. I'm new to the diesel world but I'm luvin it.

 

[ranger boy]

I've seen 30 also, the edge was bleepin but i told it to bleep itself

 

[powerboatr]

WFO Bleep bleep
Wide F Open
i tried last night climbing the mountian 75 mph and climbing egts 800-950 boost stopped at 30 on the factory gauge, i am starting to believe my factory gauge is not calibrated or just plain not working right, I had the pedal pushing close to the floor about 3/4 throttle,, this a climb of 600 feet in 1.8 miles cant do teh math so i dont know the grade, most trucks hit the top at less than 25mph and SMOKIN