I concur with the LC-1 vote.
My controller box thingy is mounted to the side of the transmission brace. Been that way since the LC-1 came out. No problems. It's a pretty fast reading setup. I use the XD-1 digital gauge (replaced by the XD-16).
One of the analog outs is setup for narrow band O2 sensor simulation and wired to the ECU. LC-1 is in place of the Stock rear O2 at the end of the downpipe.
I think the issue with the rear O2 sensor trim problem people were/are having is only related to the 32bit ECUs.
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Dan - '05 Black WRX STi.
My Mods
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