Hello all,
I have a 2018 370z Nismo.
I was not happy with the stock exhaust tone feeling it too quiet and too subdued for such an aggressive looking car.
Having spent a lot of money on the Nismo including the dual exhaust I don't really wish to rip off the new exhaust and was hoping I could make the existing system louder. Upon advice I had hi flow cats fitted which unfortunately has caused the exhaust to "rasp" at high revs. Also the engine light has now come on which of course will be the lamber sensor. I've been quoted £40 for 90 degree spacers than may fix the engine light issues but isn't guaranteed.
So I think my questions are:
What is the best way to bring out the grunt with the stock Nismo exhaust? Can it be done or do I need a whole new system. What about tailpipes or decatting it? Do I need to worry about loss of back pressure? Performance is important to me and I don't want to lose any grunt.
What are the chances the spacers will fix the lamber sensor issue? I don't want to throw £40 at it for them to have no effect. How often do these things actually work?
Thank you for your help I really appreciate it.
Adam