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De cat


Guest aldo83
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Got jspec tt Auto with HKS Super dragger exhaust and I am considering taking off the 2 cats. Does this make much difference to performance and what sort of gains should I expect, oh and does it make it sound any louder?

 

 

Cheers

:search:

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Hi mate,

 

double de cat will make a big difference, BUT you will need a 1.2 bar restricter ring fitted otherwise boost will be too high and damage engine.

 

Yes it will be alot louder.

 

I would recommend keeping the middle second cat in the system, until you upgrade the following:

 

fuel pump

Plugs

install Restricter ring (from Chris Wilson)

 

Hope this helps.

 

Regards,

 

Chris

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I need a restrictor ring too - what is chro wilsons user name? :) PLEASE :)

 

ooo and also I need the de-cat pipes too - anyone :search:

 

 

QUOTE=chrisbilling;1656526]Hi mate,

 

double de cat will make a big difference, BUT you will need a 1.2 bar restricter ring fitted otherwise boost will be too high and damage engine.

 

Yes it will be alot louder.

 

I would recommend keeping the middle second cat in the system, until you upgrade the following:

 

fuel pump

Plugs

install Restricter ring (from Chris Wilson)

 

Hope this helps.

 

Regards,

 

Chris

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