Obviously not as much as your cuz.
How about this then smarty pants, dont ask about why your csr runs like shit and your afr's are all over the place. You know what is the first thing that will be said, GET A TUNE!
It is parramount and you would be utterly stupid if you drive it without getting it tuned! But seeing as you have the money to throw around at rb26's it shoukdnt be a problem for you