You would be much better going to a local shop. If you have any problems, they are gonna blame the mod they now know about. Also they probably have no idea what they're doing when putting on a mod any more than you do.

 

at 27k there shouldn't be any of these issues...dealer is taking you for a ride...keep climbing up the food chain until you get what you want...

 

was your check engine light on when u took it in for service?... u mentioned u only took it in for a squealing...now belts would not be covered under any warranty....but as far as the cats, unless theres physical damage and or a turbo/intake under the hood they would be covered under warranty... but i dont really understand how they came to the conclusion they were bad if the light was not on, or was it?...

 

dude ...replace the sensors.. why get new cats? as far as belts.. NEW belts + labor cost 50 bux at any shell station shop. It's belts so u dont need specialist to work on ur car. u can do it urself if ur halfway good with a wrench.

 

There's no way in hell the cats are bad with 27K miles on the clock. Take your car to a Nissan dealership and ask them to change the belt since they
are not under warranty. Ask the Nissan people about the cats and how they are warrantied. I can't quote the law regarding cats but I believe
they are under warranty for 7 years or 80K miles. May not be exact but
close to correct. Infiniti dealership is putting it to ya....can you feel it? Ouch!
Gary