Post by
Larz »
https://forums.nicoclub.com/larz-u216291.html
Thu Apr 06, 2017 4:49 pm
This isn't specifiec to an M37, but it is how I view my car. The plug part number should be in your manual - if not, just call the service desk at your local dealer and he / she can provide the OEM part numbers for anything you want to replace. Then I search Ebay for the part number and you will find actual Inifniti dealers that sell most anything at reduces rates with free shipping. I buy my filters, power steering fluid, etc from Circle Infiniti on Ebay.
As for test pipes, etc. there is no significant gain from pipes, CAI, etc alone unless you do an up-rev with them.