If I’m driving along in say 3rd gear at around 2000rpm and put my foot down, the car will some times barely accelerate. It’s probably only happened 3 times since I had it mapped etc in may but it’s still pretty concerning. Also if I pull away at a junction in 1st and the revs are low the car doesn’t seem to be able to build up any speed. Also also when I start the car some times and touch the accelerator the revs will drop for a second before increasing. It’s a 2011 megane 250. Only done 34k miles.