I know that there have been a lot of people talking about installing gauges and CAI's, or exhausts on there rides. I'm just wondering what that is doing to any warranty plan on the car? I added the 60Months/100,000km warranty plan onto my finance, beings thats the length of the finance, and I'm worried that the dealership will not warranty the car if there is aftermarket parts intsalled? I was hoping to install a boost gauge, maybe amp and subs... and the underglow light kit from my old car. The most I would be doing is hooking a 12volt source up for each item, t'ing the boost for the gauge, and tapping the radio for the subwoofer hookup. All do-able via this sites help. But I'm worried that mazda will void any warranty on the car if I do any of the above mentioned... has anyone talked to the dealer and knows what they say about doing this? Thanks.