Since I’d replaced the centre pipe, I always wondered what the difference would be if I upgrade the exhaust header to make the entire system from Supersprint. I kept seeing suggestion not to modify the exhaust system by just throwing in “upgrade” parts. If the system is not properly engineered for the specific model, it usually backfires. I believe so for 2 reasons:
- The theory of exhaust gas management seems to be complex
- Many cars equipped a big diameter exhaust pipe usually lost torque at the low rev
