Something is fishy in Denmark with your maintenance.
You may have had the OEM Laser Iridium plugs in your Spyder if it is a 2012. You certainly had 8's and not 9's (9's not recommended in the RT). And why would anyone put standard plugs in a Spyder? That is just asking for an early return for a labor intensive visit to your dealership. :yikes:
And the statement made about getting charged for a spark plug change and not actually receiving one. Well, I wish this didn't happen but...
Not to mention, every time you mess with the OEM ignition wires you're asking for big trouble.
Here are the 3 NGK spark plug types available for our Spyders.
The 1st is the Standard plug which BRP used to install at the factory. These are inexpensive and relatively short lived by today's standards. DCPR8E (All RT's) and DCPR9E (RS, GS, RS-S). Don't waste your time or money on these.
The 2nd is the Laser Iridium design. To save money, a small piece of Iridium is Laser Welded to the tip of the standard metal electrode. Iridium is very hard and resists erosion which changes the gap setting as it wears. This extends the life of the plug.
The 3rd plug is the one that I sell with my Custom Ignition Wire set and the type I highly recommend. The entire center electrode is made of Iridium. These are supposed to be the highest performing and longest lasting plugs you can get from NGK.
Anytime you change your spark plugs do not forget to use Thermal Paste on the threads. This is very important. DO NOT use Anti-Seize as this compound does exactly the opposite of what is needed.
Treat your Spyder right and it will treat you right.