I have begun to mod my new "T" a bit and am eying tuners. I currently only have a drop in K&N and the stealership had installed a magnaflow or flowmaster (can't remember which) muffler. After my warranty runs out OR when my manifolds fail (we all know they will) I will get the long tubes from cajun, B-pipes & catback. I have a NISMO CAI enroute ($75 on eBay or I would have went MXP). So the NISMO and muffler will be the only performance mods for awhile. Will I see any impact with an UpRev with only those light mods? also, I run all Mac computers, is the UpRev compatible with Mac pc's? I'm assuming all tunes need to be loaded using a computer. I'm trying to avoid getting a BDGT only to turn around and get an UpRev. I have 3k mi. so I have a ways to go before I will have to replace my manifolds/warranty runs out.