X-pipe installed, dissappointed with sound
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Joined: Oct 2020
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As I see it you've got 4 options
a) modify original rear box (cheapest option)
b) xkr rear box upgrade (quads look unreal)
c) 200 cell cats (pricey although does free up hp 8-10whp on n/a engines)
d) velocityap rear exhaust (weight reduction, low cost and improved tone)
Being n/a I'd be leaning towards option C & D
a) modify original rear box (cheapest option)
b) xkr rear box upgrade (quads look unreal)
c) 200 cell cats (pricey although does free up hp 8-10whp on n/a engines)
d) velocityap rear exhaust (weight reduction, low cost and improved tone)
Being n/a I'd be leaning towards option C & D
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Senior Member
Joined: Nov 2016
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From: Hawaii
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.
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.
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Joined: Oct 2020
Posts: 51
Likes: 8
[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
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
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Senior Member
Joined: Nov 2016
Posts: 686
Likes: 227
From: Hawaii
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.
It did affect torque performance and I highly recommend getting a ECM tune if you delete your rear box.
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Joined: Oct 2020
Posts: 51
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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
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