On my Scan Gauge I am only seeing 19lb of boost max under WOT. I have removed all the hot and cold side boots and inspected for leaks and they were all good. Looking at VGT readings they are around 68 at ideal and around 35-38 at WOT. I have also notice that while is park at idle it is sweeping the vains as it goes from 84-0 then back to around 68. ICP reading are also in spec as I had read that could be the problem.
I will add that the truck is running great and had I seen the boost number I would have never thought anything was wrong. From reading the forum it seem most are in the 25-28lb range at WOT. Any ideas or maybe just the way my truck is?
Sounds like you don't have the SG2 programmed correctly for your altitude.
Check codes in scan gauge and they are all correct for altitude and boost. Actually found a different one than I had in there originally and changed it (Bismic listed it). Took it for a spin and only got up to 17.9lb WOT.
Pulled egr valve and it was dirty but there would be no issue with function. Pulled the exhaust back pressure sensor and cleaned out the passage. It was all clear and appeared to not have any issues. Still seeing low boost. I am out of ideas at this point.
BMP 14.7 WOT
MAP 30.1 WOT
Max Boost seen 16.3lb WOT 3rd gear
Well it looks like the Map and Baro sensors are Good
Post the Boost Code you are using for the SGII
When you checked for leaks did you check the Exhaust Uppipes from the exhaust manafold all the way to the Turbo??????
I would check when truck is Cold By starting the truck and then feel around each exhaust joint and the Flex joints and see if you can feel air blowing out the uppipes
The flex joint is a Common spot to develope a Leak
Also sprat CAC Boots with soapy water and check for Bubbles at Idel