So here it is! Running on 97 RON ( couldn't get hold of 98/99RON) this morning, made some interested numbers. Gains of up to 50 whp and 100 lb ft torque over the orignal curve, but there's definitely some for improvement at the top end. However the slightly higher peak power lasts longer without tailing off and about 20whp higher. Dynojet readings are abit funny though, the before run mee 352 which seems high . Renntech for example say on their site they calculate 17%loss for 4matic Mercs.