Welcome to the forums! Looks like you have an aftermarket exhaust from the looks of that exhaust tip

 

Welcome to the site Nick, nice S coupe there, any plans for it?

 

Welcome to the site!! Wealth of information on these forums learned pretty much everything I know about my car on this site
Careful parking that were you are parking it if it gets real dry where you live and your heat shields are not that good.

 

welcome Nick! Big thumbs up on finding an S is it a 6Mt or an auto?

 

It’s an Automatic, I’ve had it for about five months now, It’s stock just an after market exhaust . What’s an heat shield ? And what the most efficient first upgrade I should do I’m thinking coil overs!

 

Heat shields wrap around the catalytic converters, they can get very hot and also are a source of rattling on many Gs.

As far as upgrades~ sway bars, lighter wheels, and sticky tires are good choices, as are quality coilovers. Keep in mind camber kits should also be in your shopping cart w/ the coilovers to keep alignment proper.

 

+1 for the sway bars, even if you aren't an aggressive driver, the overall experience is night and day.