Cat c15 Turbo upgrade

Have you checked if your wastegate is Hung Open or if you have boost leaks anywhere ? Also do you have a Turbo Part number or know hte specs of your current turbo ?
Also At What rpm range are you working at and cruising At
Have you dynoed to see what hp you are at ? or how do you know your at 600RWHP ?

 

Okay so you are at estimated 675-700 hp on fly wheel is that correct ?

 

That Turbo number are used for an upgrade on B model Cats. No wonder your creating to much heat quickly, way to small for what your looking to achieve. I ran what BW called a stage 1 Turbo when I had my Cat. It did the job for my application at that time. I ran 550 brakesaver file with 58’s injectors on a 5EK series. I was getting around 650/700 hp(Miss it, and you can thank Commiefornia for that).
I’m surprised much others haven’t chimed in about your issue. Those SDP series are complicated.

 

Yes that will help You should be seeing 35-40 Psi for that hp level Low boost will account for High EGT forsure but theres alot more things that can cause high EGT as well but low boost is bad

 

I am still wondering what RPM Range you mostly run at would it be 1200-1400 1400-1600 or 1600plus