I'm interested in getting some AEM gauges to monitor atf and oil pressure and whatever else you guys recommend watching. I will not be modding this car yet but am building up to in the future. If I get a ATF gauge I would like to be able to watch both banks if thats recommended and have easy access to data logging possibly too.

I just have no idea where to begin or the best brand for the buck etc.
Help is greatly appreciated! My friends all use AEM so I'm using that brand as an example

I have a 2003 sedan G35 with a 5AT I'm also interested in being able to tune it so whats the cheapest and best bang for the buck to do that? I so far have a cold air intake and am interested in some high flow cats to start for modding. Thank you!