When in idle or neutral (whatever u wanna call it), the car rumbles a small amount and u can hear the exhaust barely backfiring or burping every so often, im sure its not gonna kill the car or anything, but does anyone else have this issue? I did a search but didnt come to any good conclusions...my build date is may 03' so i dont know?

 

Yes, and I thought it had to do with my supercharger. I feel better now that I've read some threads saying it's normal. I didn't really pay attention to it before, but now that I'm running FI, I've been paying a lot more attention to strange engine noises.

 

https://my350z.com/forum/showthread....threadid=42002