That's why I go with an ESS tune, it's like stock and can't tell anything, and M performance exhaust definitely will not lower the resale if anything it may bump it up a little as its OEM.
And a FMIC like Wagner, you can't even tell the difference from how it looks, so you'll be fine!
So..
- Wagner Evo 2 Comp FMIC
- M performance exhaust
- ESS Stage 2 tune software
- Aluminium Chargepipes
- Wagner DP if you want to