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Old 12-18-2009, 11:18 AM
 
Location: Earth
4,235 posts, read 22,154,741 times
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If so tell me more about it. I understand they read the air/fuel ratio. I know in a forced induction engine they can mean the difference between life or death on the engine.

I'm going to get one, and I already have an aftermarket electrical fuel PSI gauge next to my aftermarket mechanical boost gauge to ensure a 1 psi of fuel increase to 1 psi of boost increase....but suppose if the fuel didn't rise the 1 psi, and I didn't have the fuel psi gauge....that would cause a lean condition which the wideband would pick up on as fast as the fuel psi gauge, right?

Or do you recommend to always have a fuel psi gauge as a suppliemtn to a wideband? (hard to watch 'em all + running out of room inside...outside mounting not an option)
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Old 12-20-2009, 07:24 AM
 
Location: Fly-over country.
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I thought you just used 'em while tuning (maybe shows how much I know)

AEM has a nice wideband (digital).

You building a drag car? :-)
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Old 12-20-2009, 09:21 AM
 
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There's a good number of Impreza owners who ride with Wide bands, because the WRX engine can be a bit fragile if ran too lean (they have a nasty habit of developing engine knock when ran too lean).

If you go to North American Subaru Impreza Owners Club they'll be very qualified to help you out with any questions regarding the needs and uses of a wide band.
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Old 12-20-2009, 09:36 AM
 
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I have owned multiple Ford Probes, but I remember this guy has one from memory. I honestly have no idea what it does though.


http://www.youtube.com/watch?v=Og1mjP2oLVs
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Old 12-20-2009, 01:42 PM
 
Location: Southeast
625 posts, read 4,240,812 times
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You don't necessarily need to run a wideband all the time-just for tuning. But it's probably not a bad thing to have anyway-I use an AEM Uego. I just run the normal stock fuel gauge, but I'm running a standalone computer that controls the injectors vs. using a fuel pressure riser like you're doing. I'm not sure how quick you would be able to detect the fuel pressure didn't rise to make a difference anyway-seems to me the fuel pressure gauge would just be useful in seeing if your fuel pump is starting to go south.
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Old 12-20-2009, 01:52 PM
 
Location: Earth
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Quote:
Originally Posted by caution View Post
You building a drag car? :-)
Kinda sorta. It's a turbo car and it's one of those deals where it's running a bit more boost than stock, so proper air and fuel mixture are critical to longevity of the engine. Too little fuel and at best it's head gasket replacement time, at worst the engine self destructs.


Quote:
Originally Posted by scottv View Post
I'm not sure how quick you would be able to detect the fuel pressure didn't rise to make a difference anyway-seems to me the fuel pressure gauge would just be useful in seeing if your fuel pump is starting to go south.
Simple, I have the boost and fuel psi gauges next to each other...


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