mai jos un email de la un tuner relativ reputabil din uk. in discutie e masina mea g21 320i , i-am intrebat de compresie si de schimbat pistoane. mai jos raspunsul
We are aware of the two engine codes and the maps are adjusted to suit the differences between each engine. We write a completely unique map for each and every car that we tune and this is further personalised during our in depth consultation on the day we complete the tuning.
I would not suggest changing the piston heads, that would be a very costly job it would almost be more cost effective to swap the engine.
The discussions around the differences between the two engines have some what blown the differences out of proportion and we have no concerns at all in tuning the B48B20A engines. We have probably tuned more of the A than the B, a number in the hundreds by my estimation. None of these have had any issues whatsoever.
We could potentially fit you in this week if you are keen to go ahead with the tuning
am uitat sa mentionez , toata smecheria costa aproape 2k, din care aproape 1k e pentru ecu crack