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Old 11-13-2006, 03:01 PM   #1
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Default Wideband in Racing Beat sports pipe?

Hi

Can anyone tell me if the "bunged-off" connector in a Racing Beat Sports interpipe would be a suitable location for a wideband sensor?

I'm (very) new to this tuning business, but have just purchased a Greddy kit to fit to my '91 16. Roadster. I'd like to get an LC-1 but it seems like the stock O2 sensor location is pretty vulnerable to turbo heat.

I've got a decat pipe (no 02 sensor fitting on it), then a Racing Beat sports interpipe and then Racing Beat duals. The sports interpipe has the tapped fitting for a sensor so it would seem a good place to fit the wideband.

Can anyone confirm before I pay out?

Thanks
Andy
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Old 11-13-2006, 03:19 PM   #2
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since it's after the cat then it's not a good spot. Any muffler shop can weld one in for you for under $30.
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Old 11-13-2006, 03:24 PM   #3
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I read it as having no cat, not after the cat.

If no cat, it would be fine for monitoring, perhaps too far back for controlling. As above, just weld in a new bung if you end up needing to.
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Old 11-13-2006, 03:25 PM   #4
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Originally Posted by braineack View Post
since it's after the cat then it's not a good spot. Any muffler shop can weld one in for you for under $30.
But as I said, I don't have a cat...

I can weld a new bung into the downpipe but since there's already one on the Racing Beat pipe it would seem a shame to not use it
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Old 11-13-2006, 03:26 PM   #5
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Originally Posted by Ben View Post
I read it as having no cat, not after the cat.

If no cat, it would be fine for monitoring, perhaps too far back for controlling. As above, just weld in a new bung if you end up needing to.
When you say "too far back for controlling" could you explain why? Sorry - as I said I'm new to this!

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Old 11-13-2006, 03:33 PM   #6
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Sure. It takes time for gas pockets to reach the sensor. The larger the distance from the engine to the sensor, the longer it takes gas to reach it. So conditions at the sensor lag behind actual.

Somebody else on this board described it something like "you don't want your ecu reacting today to gasses from yesterday." Kind of basic, but gets the point across.

If you are not going to use the wb o2 to simulate nb to the stock ecu or output wb to an aftermarket ecu, the above doesn't much matter.
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Old 11-13-2006, 03:38 PM   #7
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Ah - thanks for that.

I'm guessing that one day I will get an aftermarket ecu so I don't want to close that door for now.

I'll just weld the bung onto the downpipe I guess, it's gotta come off to fit the turbo anyway
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Old 11-13-2006, 03:45 PM   #8
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Personally I'd go the free route for now and put the probe into the existing bung. The further location is slightly less accurate, but fine for montioring IMO. It's increased distance from the turbo also means less heat/less sensor wear. _If_ you get an ecu later, and _if_ there is an issue, you can always cap it off and weld in a closer bung.
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