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I wouldn't bet on the spacer trick working. On my e46 330i I still get a SES after installing headers with about a 4" J-tube welded on the downstream O2 sensor to back it out of the exhaust flow. At least on the e46, the only solution seems to be running O2 sims.
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Mike
'04 330i ZHP
'11 535i
Last edited by mko9; 07-18-2014 at 06:03 AM..
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