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Post by 0002s on Feb 16, 2017 13:39:49 GMT -7
Still not sure why everyone is removing the Oxygen sensors? They work with the ECU to adjust fueling from richer to leaner if you go up or down in altitude. I know they don't adjust a lot but what's the Benifits in removing them. Doesn't gain you more power. Doesn't save a lot of weight. Just curious if someone knows something I don't. They interfere with the tune. |
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guywithfz10
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Registered: Sept 1, 2016 17:49:46 GMT -7
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Post by guywithfz10 on Feb 16, 2017 13:48:39 GMT -7
Still not sure why everyone is removing the Oxygen sensors? They work with the ECU to adjust fueling from richer to leaner if you go up or down in altitude. I know they don't adjust a lot but what's the Benifits in removing them. Doesn't gain you more power. Doesn't save a lot of weight. Just curious if someone knows something I don't. From what I understand, the ECU flash makes it so the fuel/air ratio is as perfect as it can be for the bike. Keeping the O2 sensors in will have the sensors send info to the ECU which can alter the F/A ratio such that it isn't perfect anymore. There's probably other sources you can look at because I don't really know too much about all this tuning stuff. |
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kup0236
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Post by kup0236 on Feb 16, 2017 13:59:55 GMT -7
From what I understand they only adjust up and down from the tune less than 10%. The tune is the baseline and the sensor adjust on the fly up and down by looking at the incoming air sensor (MAF on a car) and the oxygen sensor. If it's rich it adds less fuel. If its lean it adds more. But it doesn't set the baseline that's what the tune does. That's how cars work. I admit I don't know exactly how it works with bikes but I'm not sure why it would be drastically different. The guy that flashed my ECU asked if I was removing them. He didn't seem to care one way or the other. When I asked him he said the window for adjustment is so small it doesn't really matter unless your changing altitudes a lot or riding year round. Both of which I do. So I opted to leave em in. We will see how it works I get my mid pipe today. I had him flash it for the cat delete and stock pipe. I can already tell the throttle is smoother.
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latte
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Post by latte on Feb 16, 2017 14:04:56 GMT -7
They're removed only when you get the ecu reflashed. (Not always, but Nels at 2WDW disables the O2s) Gives the tuner more control over the fuel map and the bike runs only on the map that it was programmed. The tuner accounts for elevation, temperature, and humidity iirc.
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kup0236
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Post by kup0236 on Feb 16, 2017 14:08:18 GMT -7
Ah ok that makes sense. Sorry not try to start a war here only looking for some knowledge.
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mikerich
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Post by mikerich on Jun 6, 2017 18:18:38 GMT -7
I had the same mods and also felt the stock can was too loud. I swapped to a yosh alpha 3/4 system and it's much better. The note is nice and distinguishable, not just a blaring and screaming sound (nothing wrong with that if you don't have neighbors lol). Yoshi's have always been quiet in my past experiences and it was nice that this one came with a db killer.   uploadThat's the one!!!!!!! |
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gord1895
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Post by gord1895 on Jun 8, 2017 20:31:17 GMT -7
Not sure if Hindle has marketed this at all, but I was able to get them to make a db killer for the Evolution muffler and it makes a HUGE difference! Bike still has a great tone and I don't feel any power loss but it now can be started at 4 AM and not wake my neighbors...https://www.hindle.com/road-race/replacement-parts/NOISE-REDUCERS/evo-noise-reducer
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