[Supras] AFM (hot wire type)

[Rockey Fox]

I'm no longer in the smog testing region but I believe in Georgia it would be as it is based on exhaust content levels, not necessarily stock looking components...not that many of the inspectors would notice anything different except the FIPK instead of stock air cleaner.

----- Original Message ----
From: "b2nice84 at aol.com" <b2nice84 at aol.com>
To: supr91tt at yahoo.com; berniek at technicaldevelop.com
Cc: Supras at supras.com; beyondlmts at aol.com
Sent: Wednesday, November 28, 2007 5:17:22 PM
Subject: Re: [Supras] AFM (hot wire type)


Just a question, is using the MAFT-Pro smog legal?



Brandon



-----Original Message-----

From: Rockey Fox <supr91tt at yahoo.com>

To: berniek at technicaldevelop.com

Cc: Supras at supras.com <Supras at supras.com>; beyondlmts at aol.com

Sent: Wed, 28 Nov 2007 5:31 am

Subject: Re: [Supras] AFM (hot wire type)





I'll be fabbing a tube from the turbo inlet to adapt the FIPK near the stock 
location to facilitate intake of cooler air. At one time I had considered 
placing the intake air filter under the right side headlight assembly but chose 
instead to mount my remote oil filter there. I was also concerned that 
rain/water could splash into that area and enter the fresh air intake stream.

The total elimination of the AFM restriction by setting up MAFT-Pro in speed 
density mode was a major determining factor for going in this direction instead 
of the Lex AFM upgrade. The tuning capabilities are much more robust too.

Rockey 91T

----- Original Message ----
From: "berniek at technicaldevelop.com" <berniek at technicaldevelop.com>
To: Rockey Fox <supr91tt at yahoo.com>
Cc: beyondlmts at aol.com; "Supras at supras.com" <Supras at supras.com>
Sent: Tuesday, November 27, 2007 10:09:50 PM
Subject: Re: AFM (hot wire type)


Rocky:

    Thanks for the correction.  You mentioned mounting the FIPK 
virtually (?) at the turbo before, but I thought it was because you
 were 
using a GM hot wire AFM, which is only about 2.5" long.


          Bernie


Rockey Fox wrote:
> Actually I'm setting my MAFT-Pro up in speed density mode which 
> eliminates the AFM...basically I now need to figure out how to
 install 
> my FIPK to the inlet of the turbo.
>
> Rocky 91T
>
> ----- Original Message ----
> From: "berniek at technicaldevelop.com" <berniek at technicaldevelop.com>
> To: beyondlmts at aol.com; "Supras at supras.com" <Supras at supras.com>; 
> Rockey Fox <supr91tt at yahoo.com>
> Sent: Tuesday, November 27, 2007 7:38:57 PM
> Subject: Re: AFM (hot wire type)
>
> Roberto:
>
>     The hot wire meter is not used on MkIII Supras but is used by
> others, primarily Nissan and GM although there are adaptations of the
 GM
> type for Supras (Rockey Fox is installing one).  To a large extent,
 they
> are (were?) self cleaning.  I had an '84 300ZX bought new which had
> one.  Every time you shut the engine off, it energized the wire to
 red
> heat for two seconds  to burn off any contamination.  We have a last
> generation Maxima which has one, and I do understand that they can be
> troublesome, although the one in my ZX was not.  They work by putting
> enough power into the wire to keep it at the same electrical
 resistance
> despite cooling from airflow, and the measure of airflow is how much
> power is put in.  There is also a fixed power variant in industrial
> applications, but I do not believe it is used in automotive work. 
> Technically it is call a "hot wire anemometer".
>
>
>     If the wire is dirty, airflow will read low.  There are
 procedures
> for cleaning the wire with denatured alcohol, which should not be
> detrimental.  I've seen a product like or identical to the one you
> referred to.  It should be OK to use.  The wire is made of high
> temperature corrosion resistant alloy, perhaps nichrome.  I would not
 be
> afraid to do it, but would do the cleaning with care.
>
>
>       BernieK
>
>
>
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