Hi guys. I'm taking my car to change the exhaust pipings and muffler tomorrow. My stock muffler is kaput already i think .. sounds like farting .. got "putt putt putt" sound .. dad urge me to change it because its noisy.
1.) I'm using a manual 2.0L 3SFE engine (approx.140HP) in Toyota Corona ST171. Using a 4-2-1 exhaust header. Not planning to change it. I need suggestion on what diameter for the exhaust is good to slightly improve the engine's higher end torque while maintaining low to mid...
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