west_minist wrote:This curve is almost similsr to others I have seen base on the wg.
Again, it exists all throughout tunes. So that is not the case.
If I understand you correctly, it sounds like you have tightened the wastegate arm as tight as it would go? If that is the case, then it is possible you would get a boost spike, even on the stock ROM and every other ROM you threw on there.
The graph you just posted looks like a classic boost spike . Notice how it peaks up and then drops really fast, jumps back up but less than before, then down and then you can see it do this again, but just barely. Not sure what ROM you have, but to rule this out, you could take the turbo dynamics burst's (or intergral positive/negative's) highest and lowest values and set them to 0 and re-log.