As mentioned in ‘How will the remap affect my warranty’, no one can guarantee that your main dealer will not detect the performance upgrade on your vehicle. There are a multitude of ways a dealer can detect the remap;
· Internal DTC’s which only the main dealer can see.
· Changes to the ECU flash counter.
· By logging the engine parameters to check fuelling and boost levels against factory specification.
This is not solely for engine remaps, dealers have the ability to see if you have had or have a tuning box attached to your engine also.
In saying this, not all manufacturers have this level of ability on their diagnostics so it is not definitive that they will discover it, in reality, they very rarely do. We simply advise you that there is every possibility they may regardless of what any other tuning company may tell you.