hi, i am looking for an old/damaged back box or info on the construction of the internals of the back box if any has had the desire to cut one open
daveo V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

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my plans are to get hold of an old back box to cut open, need to see what goes where, I then want to fit a pair of motorised exhaust valves that will open when sport mode is selected, this will be purely for looks or rather sound and I don’t think it will have any effect on the performance, a friend of mine removed his back box totally and it sounded awesome but not something you would want droning on a 200 mile round trip so hence the valves. There is a company called tony banks who make a set of back boxes that will give you the V8 grunt but I am not sure how they would sound when on the motor way V8 facelift Range Rover Autobiography 22" wheels.
1976 Harley Davidson Iron Head Sportster

Have you considered removing your back box and putting two "cherry bombs" on there. They are cheap and cheerful and should give you an idea what it sounds like. You can stick the cherry bombs on the valves in the final config as well. MY 2010 5.0 SC Galway green and sand interior!!
Have the Faultmate MSV2 Extreme to be tinkering with the settings etc. !!

If you do it, I'll be your first customer for one!

Always had the PSE on my Porsches which is a similar system (with the switch on dash).. was great.

TD6 with V8 grunt, sounds good to me

Adrian VW Amarok 2014 Highline auto