Which brand or company do you guys prefer? I would like to get this both items before I get the reflash.

 

ebay o2 housing, its cheap and effective.

 

the invidia o2 housing is a good unit for the price. it has a larger i.d. that feeds into the downpipe than the ebay pice, which is larger than oem. Not sure which dp's fit well with it.

T.B.- they are basically all the same, although 1 has their name engraved on the blade, which you cant see once bolted on.

 

Anyone tried HKS GT Extension kit?