I currently have the Dinan Sport installed on my X1 and love it, but am considering going with the full tune.
The benefit of the added power and not having to remove and replace it every time I have the car serviced (and yes I know it only takes a couple of minutes to do) is appealing.
I know someone asked the question about long term reliability, but I'm interested in how happy people have been over the long term with the performance.
Have you kept this or have you continued searching for bigger & better improvements?
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