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Discussion Starter #1
i've done digging around on the forums, there is no conclusive answer to this.
Is it beneficial to decat a VVC engine, my mate drives an Elise he first started the doubt in my head. Does it depend on current mods, does it depend on how honest your RR guy is?
(im aware of the MOT and emmisions test implications) im thinking purely on the BHP side of things?
Why do VVC need the extra Back-pressure?
so many questions....



'97 Coop
VVC
Full Stainless Steel Exhaust
Viper 'Duction Kit
 

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other_manufacturer
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what kind of stainless steel zhostage is it?

some of the vvc boys did a "head to head" with different manufacturers - IIRC one was a cutom powerflow jobbie and one was a Scorpion (I think, but it was another big name brand) and they reckoned that the powerflow didnt really do anything for power at all.
 

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A decat makes no difference to the VVC.

A good exhaust will make a difference, but you can leave the cat there.
 
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