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Y pipe back exhaust


Kaveney

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Hi there people .

 

Can someone give me some information in regards to the stock exhaust system .

 

I have some HFC and a milltek Y pipe but still have the stock mid and back box exhaust .

 

Will changing this give a few more BHP and LB/FT or will this just give me more noise .

 

The car has had an Uprev .

 

Thanks

 

Alan

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