|
You cant run spacer on bank one. This is what ECU uses to determine fuel, timing, etc. So if you space it the ECU will see less AFR, heat, etc, and likely compensate some. So you will run rich with a lean reading, calling for retard ignition, yadadada = very bad.
You would space bank (2) but our cars do not like 02 spacers. The ECU readers are precise enough to be finicky with most spacers. I have used them on some cars in the past but it seems the new bmws will not tolerate them. Some have got them to work but typically they are specially fabricated ones and still only work some times. If you go to bb flash the light will stay gone and you may pass emissions. You can also get someone to code in the readiness. It appears the days of easy cat less are over. I am running bb flash with aftermarket downpipes and have no code. I have not taken in form inspection yet but if the obd does not call for readiness I plan to just swap the down pipes. Its only 2-3 hours per year and I get to check on my waste gates and clean things up int he process.
|