sean welcome to the zs 180 tuning world.As stamford said its based on how far your wallet will stretch but here's the list of performance mods i have done to my mk2 180:
Piper stainless exhaust system
De-cat pipe
Home made induction system(inner wing)
Piper 270 fast road cams
ecu re-map
Initial bhp before any mods 175bhp @ the fly
Bhp when rr'd the other day when re-map was done 211 @ the fly.
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