Does anybody know what the 6.7 develops for boost on a stock engine?

 

I just got my Commander gauges working last week. Highest I've seen so far towing a 5K boat going up a pretty long and steep hill on the highway is 24 lbs of boost. And that was only for a very brief period.

 

I thought the 6.7 would spike into the mid 30's and then settle down to the mid 20's?
Still haven't installed the 50psi gauge on my Dad's truck yet so I won't actually know until it's done.

MikeyB

 

MikeyB-That could be the case. To be honest, it was pulling so good I was flying most of the time (75 mph going up a 6% grade) and not working it that hard. I saw the boost go to 24 lbs one time when some goof pulled out in front of me and I lost my momentum, mashed the go pedal and it down shifted from 6 to 5. We got right back to 75 mph pretty quick and the boost sttled down into the 10-20 range.

 

Before I strait piped it and started having problems I was topping off at 32 but the was not stock. Now its about 24 the highest

 

If i remember right ive gotten 28 a couple times but that was really getting on it.

 

While pulling a 5th wheel that weighs about 13900lbs - and put the pedal to the floor it will "spike" to almost 30lbs then settles in 22+ until I let off.

I have never seen over 30 and see 10lb+ regularly while towing on relatively level road.

 

KMKDiesel,

You have a 6.7L that is straight piped??? If so, please tell me more???

 

I have a boost gauge on mine and i get max of 30 to 31...Hope this helps. When i tried to put a homemade ****** intake on mine all i could get was 22 and some hesitation. So stock box and filter went back on. Hope this helps.
Mike

 

Ater installing a south bend double disk with my power pup loaded with a heavy load mine has spiked at 46 on some pretty good hills and will hold 40 pretty easy with a good load on a hill.

 

which clutch did you get I am thinking about getting the iron giant

 

Im pretty sure it was the 2450 lbft one it wasnt the iron giant. Retail on it was 1700 but i got it for 1500.