hollow out cats
3rd Gear Member
Joined: Nov 2006
Posts: 825
From: NJ
RE: hollow out cats
The factory cats are pretty high flow, and cost about 3-5 HP from what I've been told. I'd keep 'em on, or when going aftermarket get replacement high flows. Hollowing out was with the older cats that were real restrictive.('80's cars) I don't think its worth it to gain 3-5 HP and not have cats on. I'd stay leagl to avoid BS, the 3-5 you can make up in other ways. Just IMHO.
6th Gear Member
Joined: Sep 2006
Posts: 11,278
From: Gainesville, FL
RE: hollow out cats
ORIGINAL: JimsGT
The factory cats are pretty high flow, and cost about 3-5 HP from what I've been told. I'd keep 'em on, or when going aftermarket get replacement high flows. Hollowing out was with the older cats that were real restrictive.('80's cars) I don't think its worth it to gain 3-5 HP and not have cats on. I'd stay leagl to avoid BS, the 3-5 you can make up in other ways. Just IMHO.
The factory cats are pretty high flow, and cost about 3-5 HP from what I've been told. I'd keep 'em on, or when going aftermarket get replacement high flows. Hollowing out was with the older cats that were real restrictive.('80's cars) I don't think its worth it to gain 3-5 HP and not have cats on. I'd stay leagl to avoid BS, the 3-5 you can make up in other ways. Just IMHO.
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