Great sound!!

 

sounds amazing, i want it!

wonder if ita audible inside the car.

The sound is for me.

 

And is it possible to modify the original valves of the xk?

 

And is it possible to modify the original valves of the xk?

 

This is an old thread,

I ended up deleting the rear box and it sounds amazing.

I'm sure its possible to rig the valve open but it would involve
cutting into the original exhaust.

 

[QUOTE = tarokyama; 2339047] Ceci est un vieux fil,

j'ai fini par supprimer la boîte arrière et cela semble incroyable.

Je suis sûr qu'il est possible d'ouvrir la valve, mais cela impliquerait de
couper l'échappement d'origine. [/ QUOTE]
No more box OK but the noise is bearable? And has the engine behavior changed because more back pressure, less torque or power?Commentaires

 

Cabin noise is bearable and not too bad however outside is on the louder side.
It did affect torque performance and I highly recommend getting a ECM tune if you delete your rear box.

 

No more box OK but the noise is bearable? And has the engine behavior changed because more back pressure, less torque or power?

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👍🏻Thank you