Im on the fence about a 2021 X5M. I have always used Dinan to tune BMW's, they were the only ones i would even consider. They take longer to come out with their products
but i like their warranty and support. Currently they have nothing for the 2020 + S63 engine. I was recently introduced to another BMW tuner called Noelle Performance. Ive never heard of them and was wanting some insite. They have 2 tunes for the S63 engine, 750Hp and 850hp.
If i decided to go with them, i would go with the smaller tune as im looking to remove the top speed limiter. What are your thoughts on Noelle Performance? anyone used them in the past?