For all you guys bragging about boost at 1500rpms? Is that seriously where you are towing at? If so how high are your egts? How heavy?
I am dealing with a guy right now who is unhappy that while towing 7500lbs at 10,000ft in Colorado he has to downshift or he sees 1200-1300egts?
I saw a video posted in another thread where the guys pulls through from 1500-2000rpms but he still hits 1200egts.
I have looked at hp/tq curves of the 7.3 and at 1500rpms these trucks are making like 125hp.
The only reason I have videos showing boost at 1,500 rpms is to show how early boost can come on, because every one has a different opinion of when a turbo "spools up". I prefer to tow in OD on the highway, usually around 1,800-2,000 rpms and when rolling through hills prefer to lug it up but will shift if necessary. Not wanting to make a smoke show or slow down. I did a lot of research to match my turbo to my fuel, spent hours plotting on compressor maps, gave up after trying to read turbine maps and with a little bit of luck got it right.
That being said, I'm not sure I understand someone complaining about 1,200 degree egt readings. It sounds like they need to understand with a turbo sized to make good power on the big end, you need more heat on the small end to make the turbo work, as turbos work off of airflow (rpm) and heat. Less of one, requires more of the other. (And I know that you know all that) The point I'm trying to make is it sounds like your customer needs more education on how a turbo works. Plus at 10,000' he needs every advantage he can get, whether it be to slow down, increase rpm, or just stay home. LOL just kidding.
With my setup, sub 2,000 rpm I can make up the difference in lack of rpm with heat, but it won't push above 1,200-1,250 degrees in my second hottest file while towing, keeping things pretty smoke free. Im sure with someone elses tuning you could over fuel down low but I'm not trying to break anything.
