Sounds very logical. I will mention this to the dealer.You are going down the wrong path...We would normally swap an air mass sensor in this case...They go bad occasionally ...Especially if you use a cotton gauze air filter....Jason
I took the car to the dealership but they told me that they did not get this specific code (p2187 p2189) they just got a random misfire one. But looking at the trims, it is obvious that there is a problem there. I tried to get them to look at the live data but for some reason Maserati reader did not have live fuel trims or they don’t know how to look at them.
I got a misfire code too, had the obd reader hooked up and basically Closed Loop fueling failed and open loop took over and fuel trims were not compensating making the car run rough and hesitating.
I am trying to share as much info as posible to see if this issue can be resolved. I have little faith in the dealership, its the only one in the island with little experience. I am very appreciative of the info you are sharing with me, gives me hope. Thanks