My cruising egt at the turbo wss about 1450 with 45 degrees of timing. The log wss always glowing if that tells you anything.

 

have you tried to add more fuel instead of timing?

 

i put a pyro in one of my subarus, it would cruise down the hwy at 80mph and run 1450-1500 deg egt pre turbo, that is pretty avg for gas vehicles i think

 

Boosted, thanks for the info on the spool valve. I think I might go that direction. Was at first targeting a 76mm turbo counting on the initial hit at about 2500r's then achieving 600 rwhp when it max's out. But, with the spool valve, I might be able to go bigger yet still pull down low.

 

BW 475 will get you up near 1000whp no problem. I mapped it for you figuring you've got 85% VE. Most dyno sheets I've seen with stock engines work out to around that. If you add an intake and cam, you'd be up in the 90-95% range. All that would do is shift your required air to the right, which you'd be off the more efficient islands for 6500 rpm. Assuming you've got a big enough intercooler, it wouldn't be a problem.

 

Older T76....

 

Here's why 80mm are laggy on 4.8L's lol

Notice how 2000 & 3000 rpm aren't even on the map. Holds true to the fact considering I don't see boost until 3200 rpm.

 

S480 on 6.0L with intake and cam (assuming it helps haha) 95% VE. 80mm is a pretty nice turbo for an efficient 6.0L.

 

A couple years ago I took a ride in Smokeshow's nnbs ex cab with a T6 S475. Thing pulled hard but definitely had lag. And that was on a 6.0. I laugh everytime I see someone on tech claiming their S480/4.8/5.3 has no lag.

 

I agree. its a turd for sure. It'll get better with a intake, cam and some nitrous lol.