Hello I currently have a 16s 147 cf4 I am currently developing my setup with an fmic jtd perf/1756 intercooler / captor sensor 4b and part of the exhaust after the braid in 63 (before it is original with the first emptied cat) I find that I have an overall loss at high revs and what a lack of air power is not good : arround 210hp/420 nm what could be the cause? MAF origin? exhaust original ?? my log on 3gear and 4 gear View attachment 982802 View attachment 982803 I think your line is not fully released, or your admission maybe?