In the image,
Throttle request stays near flat
throttle body dips
boost and wastegate dip and regain over and over
Speed trending upward smoothly
think normal driving, then getting nicely up to speed on an on-ramp boost levels 5-8psi max
upgraded to an 11 lb spring in the Tial
Car is an 11 Flex
FBO - like everything in the catalog , GH turbos, EPP hot pipes "with Tial"
knock counts are clean and negative,
anybody have a similar issue? thoughts on where to continue looking?