3 replies to this topic

[germini30]

I want to get a quieter exhaust for my mini. At the moment I have a maniflow freedlow manifold linked up to a stainless single box side exit exhaust.
It looks like a fletcher bit could be a cheap knock off version.
I'm thinking of getting a twin box side exit RC40 to replace it with.
Has anyone else gone from a stainless single to a twin box system and found it to be a lot better in the car?

[Shooter63]

I did exactly that on my Mrs mini, the single had a horrible drone at certain RPM, the twin box RC40 cured it instantly.

Shooter

[germini30]

Mine is dreadful above 55mph. Seems fine upto that point but then drones away like mad

[SKIDDERWOLF]

Replaced a single box with a twin box RC40 side exit - still sounds good but the horrid boom at cruise is now gone