Noise - All the systems available give different results so wait for recommendations.
Power - Without re-map etc. will liberate next to no real increase.
Milltek - Excellent quality, speaking from experience, deeper tone but only slightly noisier. I wouldn't recommend going cat less, high flow 100/200 cell versions yes but very expensive.
Power - Without re-map etc. will liberate next to no real increase.
Milltek - Excellent quality, speaking from experience, deeper tone but only slightly noisier. I wouldn't recommend going cat less, high flow 100/200 cell versions yes but very expensive.