Hello, after I moved my 99-er 9-3er these days for the first time at minus temperatures, it struck me very pleasantly by a much more willing temperament. Logical: cold air = more oxygen (or so…). Therefore I ask myself the (beginner) question whether the LPT has a charge air cooler. I think the full turbos should have one. If no, would this be retrofittable with relatively little effort? Little effort means for me that the costs are noticeable and he Hirsch Step 1. Thank you for your tips! Greetings and a nice evening, maywald