I think I'm going to skip them. The upper one would fit, but the two lower ones won't.

 

Very well done sir

 

It's a BW S475. Makes a nice whistle


Spent the last few days dealing with a cracked trans cooler in the radiator. Had coolant in the trans and trans fluid in the cooling system. This is what I drained from the trans:



Talked to Mike L, he walked me through the flush procedure. A new radiator and 24 gallons of trans fluid later, it was coming out clean



In case anyone is curious what 24 gallons and $500 in trans fluid looks like, here you go:



Put a few miles on the truck yesterday, everything seems to be running fine. I think I may have dodged a bullet.

Still working on flushing out the cooling system. Flushed with 1/2 qt of Simple Green and water 3 times yesterday, and once with a cup of Tide detergent and water. Smelled laundry fresh when I dumped that one, lmao. I was still getting little oil droplets coming out, so I refilled with water and a cup of tide again, going to run it for a few days and drain and refill again until there are no oil droplets left, then flush with straight tap water, then straight distilled water, then finally fill with distilled water and Dexcool. I think the cooling system flush will be an ongoing thing for the next couple of weeks.

 

Ouch...

So you had to replace the radiator too?

 

damn, that is alot of tranny fluid!


So what is the benefit of doing twins on a duramax? More boost? Quicker spool?

 

Yep the cooler in the radiator was leaking so the two were mixing.

More boost. The stock turbo runs out of steam pretty quick at higher rpm. With the compound setup you get the quick spool of the stock one and the higher top end of the 475. I'll go from 30-35 psi to somewhere around 55psi with the new setup.

 

What did you replace it with? Auto parts store brand?

 

Got one from Performance Radiator here in Phoenix.

 

After all that, I would have just stuck with a stand alone for the trans.

 

What kinda power is at 30-35 vs 55psi?