N20

hello everyone,

Currently i have a N20 with approx 57000kms

Mods - Res & Muffler Delete - GFB Diverter + - MST Turbo Inlet - MST Cold air intake

I was thinking of getting a downpipes but i wanted to know if the N20 can run reliably with the downpipes. And did i need any sort of tune for it if so whats the best downpipe and tune to get?