150bhp & 225bhp Not the same turbos, engines or software
The p eak power all about efficientl air flow, engine comperssion ratio, cylinder head dynamics, turbo volumetric flow rate toproduce enough forced air efficiently without lost energy from heat build up.
On the 150 1.8T its the downpipe and cat which is the real power killer, poor flow and builds heat up really bad. Some tuners can only get 190-200bhp from a stock AUM dp/cat due to heat build up, but get the fuel and timing correct by usings the ME7.5 ECUs cylinder wall wetting /cooling stratergy (for thermal component protection) by using the extra fuel as a combustion coolant then you can get the heat down and easy tune to 210-212bhp safe all day long.
The later TT/LCR and S3 K04 engine all utilised a EGT probe in the manifold to allow the ECU calibrators to get thermal protection mapping balanced right for, Best fuel mix for power, best fuel mix for torque, best burn for thermal protection, and best fuel for carbon foot print emissions.
The AUM ecus only use an EGT lookup table maps based on theory under certain conditions, which means to map correct a hell of a lot of time datalogging with a external egt probe is needed to rescale the egt model for 200bhp+ and/or sports or decat.
My documents to study just the 1.8T ecu which I use total 3600 pages just in 2 PDF files, So getting ot right and safe in easy if you go that extra mile to fully understand the ecu and car your working on.
