I wonder???

[Fast73Excursion]

My 2000 Excursion PSD will hit 26lb. with the chip on, but that's about it. I don't have any "fooler" type device. I wonder if my rig is defueling also? I get the SES light after giving her haites...but mine stays on for days at a time. I am wondering If I should get a fooler? Is it possible that my combo could build more boost with one? (For some reason I was thinking that my chip, prevented the truck from defueling...but from reading on this subject I don't think this is the case) What about it???

[sirnunya]

your SES light stays on for days? I would suspect something else is wrong. At 24-25 the truck does start to defuel,, or tries to. what chip do you have? you could build more boost, but with the stock turbo you are starting to get out of its efficiency range. so after 32psi its pretty much useless and not making and more power.

[Fast73Excursion]

I am running a TS chip with some "Crazy" tune provided by TS owner Dennis Perry. (I live just a few miles from the TS shop) The SES light is wierd...but it does stay on for a couple of days. I can get if off by cycling the key a few times, 6 or so and returning the chip to normal before i do this> i need help

[sirnunya]

i think dennis stopped working on the 7.3 tunes YEARS ago, so that is outdated. The light shouldnt stay on for a few days, i would get it scanned when it is on and find the code its throwing,

[NCHornet]

I would for sure get the codes scanned. The normal 1211 code should go off after a few minutes, and after one cycle of the key. You may have something else going on. I wouldn't worry about the boost as the stock turbo really shouldn't be pushed past 25 lbs for long. Could be something in the tune as well. Since you live so close I would run it over and have them check it out. Let us know what you find out.
NCHornet