Bolt in MAF mount
Both of those things could affect its operation which can impact tuning.
So you know I do value your input. I know how to make things but I have no claim to the finer points like tuning. Not yet anyway... I read that the MAF should be about a foot from the throttle body but so far or a least until now not heard of really any other variables. Its more or less set in stone at this point but I did install an inch thick honeycomb "air straightener" just before the MAF. There are a few things I have done that will ultimately leave some power on the table in the name of aesthetics. My cam selection the biggest offender. I want that bad *** rumpety rump idle that a true turbo cam really doesn't provide but that's what I wanted.
Ideally you want the MAF in a straight section of tube, no bends or leaks nearby etc. The honeycomb screen etc will help
Distance from the TB itself isnt so much of an issue, but all MAF's need smooth airflow.

