Looking for some advice. I'd asked the OPC to take a look at the exhaust system whilst it was in for its service. The exhaust sounds rougher / throatier / more noisey / out of balance recently when at low speeds or idling in an enclosed area.
OPC checked and found a valvle in the exhaust to be stuck closed. They have advised replacing the rear silencer (£1500). I'm not certain however this will solve the original issue I'd asked them to investigate. It's my limited understanding that with the valvle closed exhaust gasses are diverted to the muffler reducing noise, and it's only over 3k (with PSE) or 4k (without PSE) revs the valve opens to increase noise.
Can someone confirm / give me a steer please as after spending this type of money i'd like to know the exhaust sounds as it should at all speeds.
OPC checked and found a valvle in the exhaust to be stuck closed. They have advised replacing the rear silencer (£1500). I'm not certain however this will solve the original issue I'd asked them to investigate. It's my limited understanding that with the valvle closed exhaust gasses are diverted to the muffler reducing noise, and it's only over 3k (with PSE) or 4k (without PSE) revs the valve opens to increase noise.
Can someone confirm / give me a steer please as after spending this type of money i'd like to know the exhaust sounds as it should at all speeds.