I've siad it before and I'll say it again. Something aint right. We have a similar setup except I still have my cat on which should keep my egt's a little higher. I can't get my alarm to go off. Either the slip-o-matic shifts too fast or I run out of straight away. The highest I ever saw was 1350 with the 5'er on the back. And believe me I've had the pedal denting the floorboard many a times. There is no reason you should no seeing those egt's with only an edge especially if it does it on stock setting.

 

I know the miles have nothing to do with egt's, Im just wondering why you are getting such a high reading. And if a high mileage vehicle is a good candidate for a tuner. The reason for my interest is I also have an 04 with 118k, and I am considering a tuner.

 

one other thing i forgot to mention is that my boost never gets over 23-25 psi ever. (unloaded)

Shouldnt it be in the 30's? Could this be why egts are high?
Cruising on highway at 65 mph my boost reads 4 psi

 

When I had my Smarty on the stock programing, I was only seeing about 25lbs. Highest I have seen with the Smarty is 31lbs. As far as highway readings, I see 10-14lbs.

 

I still have stock air in take, turbo, and exhaust and I've never seen 1500 EGT. 1405 towing 16k up a 3% grade at WOT on the highest setting of my Hypertech is the highest I've ever seen. Maybe your gauge needs calibrated or is inaccurate?

 

38 psi seems to be my max on any level of the edge. Maybe you got a slightboost leak somewhere. Maybe that's your problem?