Jay m A

iTrader: (2)

It is worth moving the sensor to the downpipe, the EGT's are cooler there so it should last longer (less harsh enviornment).

Most AFR meters use the signal from the OE sensor, but it is a narrow band sensor. You need a wide band sensor if you wanted accuratre AFR's for mapping purposes.

alexWRX

whats narrow band and wide band difference? Is it someway differ on the year of the car? Does bugeye and MY03 have wide band?

Bob Rawle

You also need the meter capable of reading the wide band, on its own a wide band sensor is useless as it won't work with the older std ecu's. The MY01 onwards uses a "pseudo" wide band but its not very accurate.

bob

alexWRX

Does it mean that if i fit meter with std sensor then meter will not work correct anyway. And if swap std sensor for wide band - ecu will not work then.
Whats the point?
Shall i leave std sensor for ecu and fit the other one - wide band - for AFmeter?

Also the meter is Auto Meter USA - does anyone know if its for wide or narrow band sensor.

[Edited by alexWRX - 8/13/2003 6:02:13 AM]

[Edited by alexWRX - 8/13/2003 6:11:08 AM]

alexWRX

MY95 WRX sensor positioned in headers. Now fitting HKS downpipe which has lambda sensor mounting in it right after the turbo. Is it worth to move lambda sensor from header to downpipe as it seems sensor itself restricts gas flow more in headers due to less diameter than downpipe. Are there any downsides of it moving (Longer warming up i guess). Advise needed.
P.S. Im gonna fit AF meter - is OEM O2 sensor reliable in readings - is there need to change it for newer or upgraded one?

[Edited by alexWRX - 8/12/2003 1:18:56 PM]