Need turbo advice
 

I have an 05 3500 cr and wanting to add towing power. Pulling my camper I will run 1400-1600 egt's. was told to put on compound turbos (s300 57mm and s400 76mm). I plan on putting on a 5" exhaust and already have a bully dog gt. any thoughts or recommendations would be great!

Depends what kinda injectors and programmer you are running, and how many PSI are you pushing right now. Are you running 1400-1600 consistantly or are you only spikeing at those temps.I would play with your programmer, you need to adjust it so you are not dumping so much fuel, wasted fuel creates heat. Programmers generally have towing in mind but if your running at the tune that was designed for only running with the truck then towing with that tune can create issues.

you should only be seeeing 1400-1600F pulling on decent hills, just going straight path your egts should not be near that high, i can pull a 24 foot gooseneck with a fullsize truck on it and keeping it cruising on a decently straight road with egts around 800 at highway speeds

I have stock injectors and a bullydog programmer. If I keep the the turbo spooled it will run around 1000-1100 egt. When I do that I'm running 2500 rpm and 60 mph it sounds like the engine is screaming. Was told by schied diesel that compound turbo would be the way to go for towing. Don't have the $5000 laying around to buy from them.

Well you should keep some decent boost pressure when your towing, if its not creating boost then you have a turbo problem such as a waste gate issue, but with my 24 valve VP I can haul 10 K up wolf creek pass and stay under 1000*

Even if its running between 2400-2600 rpms? Im wanting a little more power out of it without going crazy or broke so that's why I was asking about the compound turbos or something else that would do the same as.

Even at 2400-2600 RPM you should be pushing a good amount of boost, but also if it takes that much rpm to go 60 MPH then your going to need to adjust your speed the best range to be in is between 1800-2200 RPM, this is for a number of reasons to keep EGTS cool, and avoid damaging your engine. But an exhaust is also a good way to create a good flow so their is no exhaust pressure and the engine can breathe, another thing is if you pushing past 35 pounds of PSI on a stock turbo it useless air, because the turbo is generating so much heat the air does not cool enough to be effective thru the inteercooler on your truck. Now that brings into question the intercooer, if its plugged or you have a boost leak you egts will be higher than a properly working boost system. Also what setting are you running you programmer? And at 60 mph and 2500RPM what is your turbo boost? or do you not have a gauge?

The exhaust is on the list to get just for good flow and egt's. Diesel shop said everything is good on it. Just pulled the camper and at full throttle I hit 29 psi max and 1600 egt. That is in the tow mode on the truck. I think to keep it between 1800-2200 I would need to run about 50 mph. To me that's going nowhere fast but don't want a meltdown. Lol

1st challenge, 05 + run stupid hot EGT's to begin with. Has to do with the "in cylinder" egr cam profile, if you will. That being said, go "window" shopping and start pricing all the "band-aids" there are for EGT reduction, (ineffective single turbos, manifolds, cams, water injection, programming changes, exhaust, cold air, inter cooler, blah blah blah). Then while shopping and when the various vendors attempt to compare, truck for truck, their band-aids to compounds, back them "into the corner" with "EGT control". I promise you that will end the conversation. Ok, now that you have had some fun at their expense, price a set of compounds and then try to convince me "it cost so much more". Especially when kits using your good HE351 have a price point starting around $2400.
HP for HP "ONLY", you can achieve same results with a laggy, no fun to drive, smokes like a train single. EGT control however, compounds OWN that arena.

My 05: Bully Dog w/ Crazy Larry, cold air, 4" turbo back. Before compounds I could bury (and I don't mean peak, it would bury the needle) my 1600* pyro at will. Ran great, but it was driven of the pyro (guess that's why it lasted over 30,000 mi in 2 years). Now, AFTER compounds (inter cooler change as well only to get away from the plastic end tanks), all other things the same....EGT's 1225*....period. On ramp for on ramp "or" UP a 6% grade WOT sustained at 115* outside.....EGT's 1225*
Bonus: truck is completely docile and content being a "commuter". Stand on it and it delivers a constant, smooth rapid application of power (disclaimer: don't let the mild manners deceive you, it WILL deliver).

go with a stock/s475 kit and port the wastegate on the he351. you will have enough air to support 650HP.