Quote:
Originally Posted by Drift-Office
 Someone noticed! Didn't do any logging this time round but we will be... Stay Tuned!
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On Mazdaspeed3/6 the ECU is sensitive to the MAF placement and how it measures air flow, which similarly uses a DENSO MAF sensor like the FRS/BRZ.
As for the FRS, I arranged a recent dyno test with the stock intake system with no air filter and it gained nothing as far as noticeable power. Also, adding in a 2.5 mandrel bent catback dropped power causing the ECU to go pig rich up top. From the early testing, the ECU is highly adaptive to bolt on mods.