Hopefully this is the right place to post this as I am in need of some advice, as this is the first time I've thought about doing any aftermarket work on my car. Ill try to keep it short.
I bought my 08 XR6 Turbo Falcon second hand roughly a year ago and it's been great up until now (sitting at 136k as of writing), I've been doing research on what basic or preventative mods I should look at doing (trans cooler, battery replacement/turbo side intake, oil line etc). However a week ago I noticed a noise with the stock exhaust and after taking it to an exhaust shop I was advised ill need a new rear muffler. Obviously, being the cultured gentleman that I am im thinking about taking the opportunity and installing something with a little bit more...excitement than just replacing the stock rear muffler (xforce for example). I was also hoping that I could knock over a couple of jobs at once and get the new exhaust installed while doing the trans cooler and the battery replacement.
Here's where the problem comes: after talking to a few performance mechanics here in Melbourne I was advised by one that if I install a new exhaust, and/or do a battery replacement that ill also need to get the car tuned. Does that seem right? This mechanic was trying to sell me on a stage 1.5 or stage 2 kit (including a tune which he says I need) plus the exhaust which is a significant expense. It seems a bit excessive/unnecessary to me to have to get the car tuned after simply installing a new exhaust and/or doing a battery replacement? Should I even be thinking about just getting the basic stuff done, or is going with a stage 1.5 etc kit the only real option I should be considering? Perhaps the better question is: besides getting the exhaust done professionally, is the battery replacement and trans cooler installs so basic that taking it to a mechanic is overkill and I should be doing it myself?
Any help or advice anyone can share would be greatly appreciated.