The short answer is NO. if they were you would have factory warranty still in play if you use one. We can debate this all day long but the fact remains if you use an aftermarket tune, even Dinan your warranty will be voided and your car flagged as tuned. If the tuners were 100% confident in the tune they would back you up with a warranty.
- 335is E92 2013 Sapphire Black
- X5 F15 2016 Mineral White
1981 Delorean number 6489 --- Took Delivery 1.20.88