Hello! My 2 L., 156 ́ Alfa Bj. 2000 somehow does not bring the full performance. This is already my 2nd and with the last I could drive on the highway (according to Tacho) 230 and up to 220 it actually went up quite quickly. The now, goes (according to Tacho) only up to 200 and has really to fight to get to that point. Moreover, it also does not get really warm, the temperature goes to 65° to a maximum of 75° (and only a short time then it comes down to 65°). It doesn’t get warmer on the highway for half an hour, but it’s about 65°. Could that have anything to do with the temperature? if not, what could it be then? that with the temperature I think of the thermostat, but does that solve the other problem? P.S. I now have 215/45 17 ́ tyres on the Alfa, with the other it was 205/15 65 ́s. Could it be that simply the speedometer due to the difference in size of the rims no longer vote mt? Thanks already in advance for any answer!!!