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So we know the MS6 runs really rich, as evidenced by dyno charts and the black soot on our exhaust tips.

If we feed more air into it, and allow it to exhale better as well, will that thin out the mixture a little, or will the ECU simply ignore the better breathing and continue to keep it rich?
 

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So we know the MS6 runs really rich, as evidenced by dyno charts and the black soot on our exhaust tips.

If we feed more air into it, and allow it to exhale better as well, will that thin out the mixture a little, or will the ECU simply ignore the better breathing and continue to keep it rich?
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the a/f ratios are metered by the MAF sensor and the o2 sensors. putting more air into the system will only lead to the ECU adding more fuel. adding an intake and/or exhaust will not change the ratios by anything noticeable.
 

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Dang...thanks bro.

..1200 miles..patiently awaiting a solution to this richness. Rich is safe, but at the expense of poor mileage. Thin it out a point or 2 and we will have better power AND increased gas mileage. (go fast foot dependent or course).
 

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the a/f ratios are metered by the MAF sensor and the o2 sensors. putting more air into the system will only lead to the ECU adding more fuel. adding an intake and/or exhaust will not change the ratios by anything noticeable.
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Seems to me that once it goes into open loop and starts looking at tables, then there are differences.


Here's the dyno for your TMIC. Look what happens right after 3250rpm:

http://forum.mazda6club.com/index.php?act=...st&id=16920

The CPE CAI after 3250rpm:



:shrugs:
 
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