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Message: <blockquote data-quote="mcglsr2" data-source="post: 1393060" data-attributes="member: 15705">Uh oh, I think I effed you up.  By AFM, you are referring to the means by which air coming into the engine is measured?  In other words, a variation on a MAF?  If so, that is not what I was talking about, totally my bad.  I was referring to a wideband specifically.  I have seen them referred to as AFM's before.  I was *not* talking about the sensor that measures incoming air to the engine.  What I said previously still stands for widebands and the way MS works.Now, talking about AFM/MAF style metering, you *can* program MS to work with them.  But it can be tricky.  MS can work with Ford style MAFs.  However, you should consider SD (Speed Density) if you go MS.  For example, when using the MSPNP Gen2 on the Mustang, which is a plug-and-play solution, one is supposed to ditch the MAF and use SD.  So unless you are married to the idea of running a AFM, I would just go speed density and be done with it.  You won't run into issues with SD unless you are running a huge cam and have no vacuum at idle.  In which case, you could use Alpha-N for lower RPM's, then table switch to SD for higher RPMs.I have "used" BE in the past - by used I mean I had a QH, I purchased BE and the Analyzer apps, I had things hooked up and went through tables and stuff, did tons of research and reading, even bought a tuning manual.  I have not yet installed MS but have done my research - to me, and it's just my opinion, MS is *way* easier to tune with.  BE has a super steep learning curve because you have to learn all the weird terms that the factory PCM uses.  Once you learn it, then things get easier.  And the benefit is you can leverage all the work and research the factory did.  With MS, there is still a learning curve obviously, but things are more intuitive.  The downside is you are starting from "scratch."  And lastly, the biggest deciding factor for me, is the support for MS is way better than BE.  Good luck getting BE to run on a Windows 10 machine right now.  MS is actively being improved.  Is BE?  I'm not saying anything is wrong with BE, so please don't anyone jump down my throat.  BE is fine, and there are some very skilled people with it that can do some amazing things with it.  All I'm saying is that for someone just getting started with this stuff, I believe MS will be easier to pick up, learn, and become effective with in a shorter amount of time than BE.</blockquote>