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Old 10-17-2009, 12:22 AM   #17
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Join Date: Nov 2003
Chapter/Region: MAIC
Location: Pittsburgh, PA
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Originally Posted by JSarv View Post
Front o2 Sensor scaling is improper for USDM applications. You have 2 choices - 1. Rescale for your stock roms o2 scaling 2. Move your front o2 Sensor to the Downpipe.

That's fantastic news! Always wondered if the car would run the same if I just moved the O2 post-turbine. This'll let me get some semi-legitimate AFR readings using the stock sensor even under boost!

Wait a minute... After comparing my 04 WRX ROM to that Group N ROM, the Front O2 scaling isn't any different. Every mA value corresponds to the same AFR. The only difference is the Group N ROM has more cells so the O2 sensor is scaled down to 10.x instead of just 11.36... Is there a huge difference between your 02 WRX ROM and this Group N ROM?
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Last edited by MRF582; 10-17-2009 at 12:55 AM.
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