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Cosmetic Modification (Interior/Exterior/Lighting) Discussions about cosmetic mods. |
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03-20-2023, 07:43 PM | #1 |
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P3 V3 OBD gauge vs Standlone Gauge
Hello guys,
I've tried to search for this topic but could not find anything conclusive. I'm debating whether I should go for a P3 V3 OBD gauge or a Standalone gauge (like a AEM Wideband UEGO) for AFR monitoring. I want to keep the look as OEM as possible but at the same time I want accurate readings. What's your opinion on this? |
03-20-2023, 10:07 PM | #2 |
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03-20-2023, 10:57 PM | #3 | |
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03-21-2023, 09:24 AM | #4 |
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OBD gauges are nice because there's a lot of info available. OBD gauges are also not good because they are limited to the sensors already existing, and they are using the OBD port that you may sometimes need for other things (depending on who you are). You can have the stock 02 sensors recalibrated to read lower in the af/r range with tuning software.
TL;DR- OBD2 gauges- less wiring, limited to stock parameters, multi-function, can only have 1 Standalone gauges- More wiring, nearly unlimited in function w/ appropriately matched sensors, typically limited to 1 or 2 functions, can have as many as you want
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03-21-2023, 02:48 PM | #5 |
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Depends on how critical AFR monitoring is for you. The OEM ECU already monitors AFR, and adjusts much faster then you can perceive. It's very difficult, and not very practical to read AFR while under heavy throttle. If you are just looking to make sure you are in the range of good AFR, the oem setup can be just fine with an OBD gauge (as noted, ecu should be adjusted to read richer AFR then standard). The OEM sensor is very accurate.
If, you are running a high strung high hp setup, it may be beneficial to have a redundant reading to the OEM, in that case, you'll want a second o2 sensor and gauge. (Assuming mild street/track setup) I'd suggest not monitoring AFR in real time at all, instead occasionally checking your STFT and LTFT to ensure all is well.
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03-21-2023, 06:47 PM | #6 | |
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I'm prepping the car and doing support mods but the end goal would be a turbo setup (looking at the greddy t518z) for around 300-ish WHP. I believe that's what you would call "mild". Running rich is not my concern, but running lean on high load scenarios is what I'm afraid of. My goal with having an AFR gauge is to serve as last defense in case something goes wrong with the tune/boost controller/vaccum/whatever. I will be installing a standalone boost gauge and a oil pressure gauge. But I feel like with just these two I don't really have an insight about what's going on inside the engine. |
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