Will true duals screw up O2 sensor?
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Junior Member
Joined: May 2011
Posts: 24
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From: Alberta, Canada
Car: 1989 Firebird
Engine: 2.8L MPFI
Transmission: T-5
Axle/Gears: Stock
Will true duals screw up O2 sensor?
My car is stock with only one O2 sensor, as it's got the stupid T-pipe.
My plan is to replace that crap with Cherry Bomb Vortex mufflers (true duals), and straight pipe through instead of cats (P.O. gutted my current one anyhow.
The question is, will having true duals and only having an O2 sensor in one bank tell the ECM (it's a MPFI) the engine's running lean?
Or will there be no change.
Thanks in advance, and if this is already out there, I did try finding it. Just with no luck :P
My plan is to replace that crap with Cherry Bomb Vortex mufflers (true duals), and straight pipe through instead of cats (P.O. gutted my current one anyhow.
The question is, will having true duals and only having an O2 sensor in one bank tell the ECM (it's a MPFI) the engine's running lean?
Or will there be no change.
Thanks in advance, and if this is already out there, I did try finding it. Just with no luck :P
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Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: Will true duals screw up O2 sensor?
The stock exhaust has the sensor only reading the drivers side.
Thread Starter
Junior Member
Joined: May 2011
Posts: 24
Likes: 0
From: Alberta, Canada
Car: 1989 Firebird
Engine: 2.8L MPFI
Transmission: T-5
Axle/Gears: Stock
Re: Will true duals screw up O2 sensor?
Mine has the O2 sensor right after the t-pipe, so it will be reading both banks. Is this thanks to the PO?
Supreme Member
iTrader: (1)
Joined: Sep 2010
Posts: 1,928
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From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: Will true duals screw up O2 sensor?
The V6 is after the T. I believe at least some of the V8s are in one bank.
Member
Joined: Jul 2010
Posts: 305
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From: NJ
Car: 87 GTA flame red
Engine: 5.7 l98 cranes 2032 and chip
Transmission: stage 10 700r4
Axle/Gears: 3.27 axle
Re: Will true duals screw up O2 sensor?
They read the drivers side because that side is the one that could become the most lean because of the y-pipe design.
plus our cars batch fire injectors so having two wouldn't help much anyway
plus our cars batch fire injectors so having two wouldn't help much anyway
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