Originally Posted by
Greg Amy
Think of it this way.
A vehicle's MAF is typically the main intake restriction, especially those with a flapper-type system (e.g. Mk1 Miata). As such, the rule is written such that you cannot remove the MAF and increase the amount of airflow going into the engine.
But, the rule was written specifically to allow such systems as Megasquirt, Haltech, and "piggyback" ECUs, many of which use TPS and MAP as their primary engine load input.
Thus, one can meet this rule very easily: install a TPS and MAP if not so equipped (specifically allowed), and if you wish leave all the wiring stock - even the inputs into the wiring harness/ECU - and simply program your ECU to ignore the MAF signal. Since ECUs are free, including programming, is completely free, it's not only legal to the letter but also to the spirit and intent of the rule.
While you may find the wording of the rules a bit awkward, I ssure you this was the specific intent of them. - GA
Bravo Greg I would have to agree totally. (And so did certain members of the CRB when I spoke with them about it.)
Jeff Linfert
Atlantic Auto Works
We Install and Tune Megasquirt Systems
#97 GTL Scirocco (for sale)
ABA Corrado powered by MS3. 40+ MPG
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