02 sensors on dual exhaust
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
02 sensors on dual exhaust
I want to put dual exhaust on a flathead v8 engine. With megasquirt, do you put an 02 sensor at the end of both exhaust header as well, or can you only use 1? If it is recommended to use 2, how do you wire that up to the megasquirt? I guess technically, the 02 mixture should be relatively similar on both sides of the engine though....
Re: 02 sensors on dual exhaust
If going wideband, check the makers instructions for distance from the exhaust ports. It will have a short life if too close.jerchap wrote:I want to put dual exhaust on a flathead v8 engine. With megasquirt, do you put an 02 sensor at the end of both exhaust header as well, or can you only use 1? If it is recommended to use 2, how do you wire that up to the megasquirt? I guess technically, the 02 mixture should be relatively similar on both sides of the engine though....
If the system has to be made, why not fit a balance pipe between the two just for the sensor? On my RV8, the two branches join at the back of the 'box, and that's where I've fitted the wideband sensor.
Dave P, London UK.
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
Rover V-8
MSII V3
EDIS
Tech Edge Wideband
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Bernard Fife
- Master Squirter
- Posts: 475
- Joined: Thu Oct 29, 2009 12:54 pm
Re: 02 sensors on dual exhaust
jerchap,
Millions of vehicles were produced in the 1980 with a single O2 sensor in one bank. The engines ran fine for the most part. Certainly MegaSquirt will work fine that way if the engine doesn't have other problems, my V8 has been running this way since 2002.
Stricter emissions requirements eventually led to 4 (or more) sensors being used (mostly to determine if any component had failed).
Lance.
Millions of vehicles were produced in the 1980 with a single O2 sensor in one bank. The engines ran fine for the most part. Certainly MegaSquirt will work fine that way if the engine doesn't have other problems, my V8 has been running this way since 2002.
Stricter emissions requirements eventually led to 4 (or more) sensors being used (mostly to determine if any component had failed).
Lance.
"Never wrestle with pigs. You both get dirty and the pig likes it.” - George Bernard Shaw