Quote:
Originally Posted by ashburyn54
Yes it will effect emissions and will trip a cel. There are various fixes. I would recommended jb4 or the i02 catsim. Avoid spacers of any sort.
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Well, the JB4 is not a fix. You can't pass inspection with it. You can use the JB4 to keep the CEL light off, but while the auto-clear is active, the car won't complete its readiness monitors, and therefore, will fail emissions. It only keeps the light off so it doesn't bother you, that's all.
The iO2 sim is the only current fix accepted across the board as working.
A spacer on an N55 is hit or miss, largely miss. But at least it has a chance of sneaking you through, vs. the JB4.
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'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs)
'14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat)
'08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat)