Meal, I need a clean listing, which maximum air masses at which speeds the chipped 225 or K04 conversions have. With clean I mean that it is not suitable (as in other contributions to this), if then also series225 and chipped 180er post your values. This makes the whole thing very confusing…. Background is that I had yesterday with several measurements always at a maximum of 6,000 rpm no more than 201 g/s. Would me care, what I with e The 180er seems to be leaking at 201 g/s, because you have from 6,000 to 7,000 rpm constant 201.25 g/s. That’s why the exhaust gas temperatures probably also go imemr from 6,000 rpm up to almost 900 °C Thanks and greeting Markus