I just installed a gauge set today. I could only get 16 lbs of boost wot and 1300 egt. check for leaks--none found. After unplugging vacuum line to waste gate now can get 20 to 25 wot and egt wont pass 1200--any ideas?02 f350 ats 80 hp chip, ats 4 inch turbo back dual exhaust, afe intake

 

Sounds pretty close to right. You need a little more tension on the wastegate actuator arm.....or just leave it unplugged.

 

1200 temps? Is that at the manifolds or post turbo? Wow Im not getting the 1000s unless pushing hard with a trailer. I watched today with an 18ft hobbie trailer and got the following temps---exh post turbo 840 at 75 mph slight incline---tranny temps 160-170 max leaving rest area hard accel was 190 on tranny.

 

I'm pretty sure he's got pre-turbo temps. Big difference in readings vs. a post-turbo probe. I wonder what the pre-turbo egt's would actually be if post was over 1300

As far as the wastegate, looks like you've found the problem. You can tighten the rod to see if that helps, and if not go with an aftermarket one like Banks Big Head or Turbonetics.

 

Those are pre-turbo temps. When i towed my 12k 5th wheel home today i could hit 1300 egt at only half throttle on flat ground. Have not towed with wastegate unhooked yet, hope it as simple at replacing the vacuum solenoid.

 

Fgibby I highly recommend that you leave your wastegate connected while towing.
What I've done is set the control rod to drop onto the wastegate lever when the air pressure is 12 psi. In rough terms that's only about 1/8" difference between the lever and the disconnected control rod. It's a pretty strong spring inside the canister. I still get a LOT of boost, even with the wastegate connected and I have the assurance that the drive pressure on the exhaust side is a lot less than it would be if the wastegate were disabled.
Mech2161 posted some findings about drive pressure being roughly double what the boost pressure is and that creates a big imbalance against the thrust bearing in the turbo.
I took this picture when the control rod was set to aprox 20 psi before the rod would drop onto the WG lever. Since then I've set it to 12 psi and I still get 26 psi on a big hill pulling the trailer.
The boost will be there when you need it as long as there are no leaks.

 

I plan to have it hooked back up all the time. I unhooked it trying to see why my boost was low. Having just installed the gauge i guess my questions are

Is 16 lb of boost with 1300 egt pre turbo normal or is the 24 lb with 1200 max egt not towing?

Towing on the flat at half throttle should not run egt so high. It seemed like i could have gone to 1600 egt no problem wot towing on the flat.

Is it a rod adjustment or a new solenoid?? If i adjust the rod do you mean to shorten it an 1/8th

Thanks for any help

 

The correct way to adjust the length of the rod is with some low pressure compressed air. You have to adjust the length of the rod until you can reconnect it to the WG lever while it's in the closed position while there is a certain amount of air pressure being applied to the WG control canister. Factory spec is 5 psi. I have mine set to around 10-12 psi.
That translates into about a 1/8" gap between the WG lever and the control rod when the control rod is disconnected. The WG lever is in the fully closed position and you are gently pulling the control rod toward the lever, removing any slack. The 1/8" difference is the last little bit of distance that must be made up in order to be able to reconnect the control rod to the WG lever. It doesn't take much.

You really should have a lot higher boost with 1300 EGT. My turbo would be going crazy if it got that hot. I'll usually run around 900 degrees on the flat with the boost going up and down between 10 and 20 psi. The slightest incline makes a big difference. The EGT's don't climb into the yellow until a start pulling a big hill. Then the EGT will slowly work it's way up to 1200 and the boost will be around 26 psi. But it has to be WOT and the hill big enough to slow me down to get those numbers. A smaller hill, the boost will quickly shoot up to 25 and the EGT will slowly work it's way up to 1000 -1100.
This is all while cruising along the interstate at 68mph and 2400 rpm. (4.88 stump puller rear axle.)
And you should hear the 5" exhaust bellowing out it's music when it's pulling like that.