GMtechmatt

is there a vendor or aftermarket exhaust company that makes a off-road Y-pipe for a ls1 with the Oxygen sensor bungs welded in? and if so how does it sound ?


thank you matt

zz4camaro1980

Bassani

Makes the car louder and raspier.

Rare96LT1Formula

iTrader: (32)

Why would you even want one? Odds are you'd never get accurate O2 readings back there anyways with a full aftermarket exhaust. (Maybe with a good tune..??) Makes no sense imo.

zz4camaro1980

Good point, even with the the O2 ports you will still get the check engine light.

GMtechmatt

well seems like for what im going to to im going to eliminate the cat reguardless so this option is out thank you long tubes and those are welded in

LS-ONE_DAY

American Racing Headers does. Quote from the owner emailed to me when I asked him why my ORY had them:

Mike, the two additional bungs are for the secondary O2's that locate after the cats. We install them since most folks reinstall all four O2 sensors even if the secondaries O2's are shut off. I could send you plugs to cap them off Monday if you wish. When not running cats, we used to delete the secondary O2's bungs but some complained that the wanted them so we now include them on all systems. Let me know and I'll ship you a set. Thanks.

jimmyblue

iTrader: (11)

Just how do you compute those odds? You think 2 feet of
pipe is changing the oxygen content somehow?

Rare96LT1Formula

iTrader: (32)

Just re-read the OP and I thought he was using a catted y-pipe. My mistake.