Since I got my remapped S3 in April it hasn't felt quite as quick as I was expecting, although it felt quicker than my last car so just thought I was expecting too much. But I borrowed vagcom and did some logging and found my MAF peak was 137g/s, when apparently it should've been 200+g/s. So I also logged block 120 (torque) and used the spreadsheet for this measuring block from the rosstech website to work out I had 180hp and 200lb-ft. When I unplugged the MAF (so it was running on base levels) I got 225hp and 219lb-ft, which did feel a bit quicker but it wasn't all that smooth through the revs. I tried cleaning the MAF but it made no difference. Then today I brought a new MAF and its like a new car. Feels completely different throughout the rev range, much stronger and obviously more powerful. I logged 250hp and 270lb-ft!!! Its supposed to be remapped to 265 but I appreciate the way my power has been calculated probably isn't all that accurate, but equally a remap without any other mods might not quite make the claimed 265. Anyway am well chuffed and can highly recommend checking MAF readings if your car isn't feeling quite like it should.