[Shotimes] 77mm Pro-M MAF quality

[Donald Mallinson]

Michael,

My Pro-M 77 was purchased several years ago, but the 
worksmanship, while good, is not what I would call "show" 
quality.  The inside of mine is also not super smooth in the 
bore, but that is a good thing as smooth bores in an intake 
path can lead to more resistance to air flow than a slightly 
rough surface.  Not every surface needs to be mirror smooth.

My 77 has performed flawlessly since installation, and while 
not polished or snazzy, it WORKS and that is better than a 
lot of cheaper or equally priced units that don't.

Don Mallinson

Michael wrote:
> Hi,
> 
> I just got a 77mm Pro-M MAF and, even though I have not installed it yet, I'm quite disappointed wrt to assembly quality and the appearance of the meter. It's almost like some 10 year old did the machine work on the meter.  
> 
> For example about 10% of the venturi opening is polished while the rest is rough.  And the sample tube is a joke.  On Pro-M's web site, they make a big deal out of the sample tube opening also having a venturi shape. Woopeee, lucky me. Pro-M must have learned that a straight uniformly shaped cylinder all the way from the sensor element to the opening is a better approach, cause that's what my meter has.  Maybe Venturi in the sample tube doesn't make a darn difference.  That is a possibility. But then don't hype it up so much on the web site.  Shit like that just makes my upset.
> 
> How do your Pro-M meters look?
> 
> According to Pro-M all the meters they have in stock look as I described it above.  I'm not sure I believe them.  "Try it out. If it doesn't perform well, return it.", they told me.  So I have not done that yet.  In the mean time I'm just curious what other 77mm Pro-M meters look like.
> 
> 
> Michael
> 94MTX,green,BOS+
> 
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