Compound turbos for towing, Ultimate Tow Machine, See how to build on a budget 

Glad it was helpful!

What are you doing with the powerstroke? May be interested in it

I always have about 2000 + pounds on it. With out compounds I would get 19 - 20 and towing I would get 12 -13. With compounds I get 21 - 22 and towing 14 -15. If I keep my foot out of it, with fun take offs I will get 18 - 19.

Take good exhaust out Of other trucks/cars and cut the pieces you need and weld it together. Or buy crazy Carl’s

No I have a 6 speed

It is5.9 cummins, I had a hx40 on top because I have a HO 6 speed. I put a hx50 on the bottom. This seems to be the best combo for me, I towed about 12,000 pounds the other day (Scrap yard scale) and they worked good. You are right you need to know the wheel size, Cummins uses Holset turbo on all there engines. This is what I meant about the top turbo is about the same size as stock with a bigger housing, the turbine and compressor wheel are about the same as a Holset hx40. The housing is a T-4 and Holset hx40 is T-3. I just google" hx50 turbo" and keep looking. There is a chance of getting a junk turbo, they probably all come from China. The word made in China dose not mean junk but they don't cost $1500 + like a true Holset. I payed $325. for mine and have used them in the past with good luck.

Thanks. You mentioned you found the 50 too big or was that a 55? It looked like you were trading it out for a slightly smaller turbo.

The hx55 was a little slow to spool up. I took the hx55 off and put the hx50 on it spools up much sooner.

Ahh ok. I see now.

I am not sure, I never had it on a dyno. It runs good. I am happy with it.

Glenn 3505 increased fuel economy you said in the video? Lower EGT all around? Any negatives you’ve found?

The point is small turbos spool fast, big turbos spool slow. Small turbos run out of boost in low RPM's and the big dose the work in higher RPM's. So working together give you boost in low and high RPM's. So no, if you put turbos the same size on you would not gain anything.

DillonBets 69 yes you can. They should really be the same to keep the back pressure on the engine. His five inch on that exhaust is way to big. He’s loosing hp because of him loosing to much back pressure. He sounds like he’s done his home work but he needs a little more information from a top notch guy on turbochargers and the correct way to set it up. But he did a half decent job for the first time.

@@johnhutchinson5398 wrong.

@@johnhutchinson5398 I think your mistaken with regards to back pressure when it comes to turbo diesel engines. A turbo diesel with the biggest down pipe (5 or 6 inches in general for work trucks) and no muffler, just a straight pipe back, or to stacks if you prefer, is the best setup. Back pressure will be substantially less with an A/R of 1.00, 1.05, 1.10 versus .70, .84, .96. Less back pressure, lower exhaust temps when hauling uphill under load.

The exhaust part is steel the boost part is aluminum.

I have 25 years welding experience. You shouldn't be commenting either. You don't know what you are looking at.

What? Why would you want a smaller intake? Exhaust back pressure doesnt matter in a diesel, high drive pressure is bad. If its laggy get a smaller ar housing. Go back to your gasser.

john Hutchison you are incorrect sir, 5" exhaust is good in the diesel world. Keep reading about chargers for gassers, You have no clue what drive pressure is apparently. my current setup is a s363 over an s475, 6 x.013's, 3600 Valair DD, i can beat the snot out of it and get 21-22 mpg

I think your mistaken with regards to back pressure when it comes to turbo diesel engines. A turbo diesel with the biggest down pipe (5 or 6 inches in general for work trucks) and no muffler, just a straight pipe back, or to stacks if you prefer, is the best setup. Back pressure will be substantially less with an A/R of 1.00, 1.05, 1.10 versus .70, .84, .96. Less back pressure, lower exhaust temps when hauling uphill under load.