Just bear in mind that there is often a lot of bluff in dealer warranty statements. I am involved in supplying a product for engines to the mining industry, and can tell you there is never any support for aftermarket product by manufacturers. However, their warranty must cover materials and workmanship. If their is a problem with the engine, their warranty covers it.
If it can be shown that the aftermarket product, additive or whatever, caused a failure or problem, they have no responsibility to repair or rectify.
OEM's & dealers will often try to get out of warranty by pointing to another product causing it, and you might have a battle, but if you know how you stand legally (and the product has not caused damage) the law is on your side.
I dealt with one mine that was told their warranty would be voided unless they used the engine manufacturers brand oil, while a BHP group of mines all used the recommended oil specification in a Mobil brand...knowing that there were no warranty problems at all. (This is unrelated to my business...just an example I came across.)
In my case, I don't believe the Tunit will cause any damage, and there are no reports I am aware of that indicate problems. Also, I don't drive it hard so there is only a small risk, and I am happy to use it under warranty, and enjoy the better drive.
Regards
Brid
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