I love my 2008 G37! Performs smoothly after this, it started idling a little rough, mentioned it to the dealership on a couple of service visits, they never said anything was wrong. Until....a" service engine soon" light came on and now it needs a new catalytic converter $1600.00. It had 82,000 miles when I mentioned it first, now it has 84,600 and the dealership said I have to talk with Infiniti customer care department to get it replaced under warranty. I slid a mirror under the carriage on the passenger side and saw a hole in the converter pipe?? I am not very savvy with auto repairs and read the dummies.com catalytic converter page, it was informational but what can I say to get it replaced under warranty?

Have you contacted Infiniti on the toll free number in your warranty booklet as the dealer mentioned to you?

https://owners.infinitiusa.com/content/ ... y_2008.pdf

Telcoman

Yes, the process said to contact the dealership management then dealership owner but my service advisor said my best option was to just call Infiniti Consumer Affairs. So I did, they put in a claim and I'm waiting for a call back since last Friday 5/8/15. Does it sound unreasonable for me to want them to cover it under warranty? Any special words I should use? I am not familiar with the industry lingo.

And.... I can't find in the correct Index listing in the FSM/G37/Coupe/2008 where the catalytic converter is covered.

You could install High Flow Cats. They are a bit louder than stock, and will add a few Horsepower.
Stillen has them for about $500.
They are a pain to install, but I would think any decent shop could do it for $300-$400