There are 2 distinct versions of the LSU ADV, the normal "LSU ADV" and the "LSU ADV preTurbo" one. They have different part numbers and slightly different specs. Its not safe to assume that all ADV sensors are preTurbo ADV's. And the max allowable back pressure for both the ADV's and the 4.9 is 2.5 bar, so the ADV preTurbo is not rated for any higher pressure capability than the 4.9.Hentai wrote:I would "suspect" it has to with the point of the ADV, being for pre turbo applications. I've seen one in a oem car. Also I believe the design tolerates higher temps than the 4.9 and 4.2 does. It would surprise me in order to meet the goals it was setup for that was one of the penalties it had to take.
Here are the temp and back pressure specs for the 4.2, 4.9, ADV and ADV preTurbo sensors.