WTF is this?

"Chuck" > wrote:

>Hi Leon;

>I hear that the city with the arch is getting more rowdy these days.

I assume so, but I think you are confusing me with Lanny. I am the
one in Tallahassee.

Leon

> It was
>a bit that way when I went to school there in the 60's.
>One of the things I remember about that era was that the city owned about
>two radar units, so driving thru the city west to east (downtown) could be
>done at high speed.



>"Leon van Dommelen" > wrote in message
.. .
>> "Chuck" > wrote:
>>
>> >As I understand the thing it is really another version of an "AFR/AFPR".
>> >The NA Miatas have a return fuel system, so the "AFR/AFPR" can be used.
>NBs
>> >99-05 have an internal fixed fuel pressure regulator and no return, since
>> >the regulator is in the tank. 06??
>>
>> the pressure regulator is in the tank.
>>
>> >An "AFR" or "AFPR" as it's sometimes referred to, as used on a Miata, is
>> >usually installed in order to support the installation/operation of a
>> >supercharger or turbocharger.
>> >For instance, a showroom stock NB is approximately 110 HP at the rear
>> >wheels. A turbocharged NB with a stock engine might reasonably produce
>220HP
>> >or so at the rear wheels.
>> >Obviously, the turbocharger must be providing more air, and something
>must
>> >provide matching fuel. On an NA the AFR or AFPR does the job. On an NB,
>> >without making a serious fuel system modifiacation, the only way to add
>fuel
>> >in the amount needed is to add extra injector(s) (my 99 has 8 total, four
>> >port, & four intake manifold) or use different injectors. Larger
>injectors
>> >cause problems when the stock OBD2 computer is used, and obtaining
>correct
>> >idle may be impossible.
>> >
>> >Interestingly enough, most of the AFR/AFPRs used on Miatas are based on a
>> >design by a Mr. Corky Bell. It may be that the one offered by Moss is
>such a
>> >copy, and selling it in the US is a problem.
>> >
>> >I don't see that it should have much use on a stock NA.
>> >
>> >"XS11E" > wrote in message
>> ...
>> >>
>> >> "Mal Osborne" > wrote in message
>> >> ...
>> >> > > For a US spec Miata the pressure is correct (I notice Moss does not
>> >> > > sell this on their US website)
>> >> >
>> >> > Maybe some consumer or anti-polution laws in the "Land of the free"
>> >> prevent
>> >> > venders from selling this sort of stuff.
>> >>
>> >> My guess is that it's not needed. From the website
>> >> http://www.fuelsystem.co.uk/pbv.htm:
>> >>
>>
>>================================================ ===========================
>=
>> >> The electric fuel pump supplies fuel at a high pressure to the fuel
>rail
>> >and
>> >> injectors, which is then regulated by a fuel pressure control valve.
>> >> Typically, the regulator is not adjustable and is pre-set to a 3 bar
>> >maximum
>> >> pressure. At idle the fuel pressure valve reduces it by 0.5 bar
>> >> approximately to 2.5 bar. When accelerating quickly from standstill
>the
>> >> fuel pressure increases at a proportional rate retaining a lean fuel
>> >mixture
>> >> strength as required by the E.E.C. for new vehicles. However, the
>> >resultant
>> >> effects of the standard valve produce lethargic throttle response,
>> >> occasional drivability problems at slow traffic speeds, intermediate
>> >> performance 'flat spots' when accelerating
>> >> By comparison Ref: Power Boost Valve (replacement)
>> >> Firstly, this valve has an adjustable fuel pressure, effected by the
>> >> movement of an adjustment screw on the crown of the unit.
>> >> New Power Boost Valves are pre-set with a maximum fuel pressure of 2.5,
>> >3.0
>> >> or 3.5 bar, depending on the vehicle in question, and similarly (to the
>> >> original valve) the fuel pressure is reduced by 0.5 bar approximately
>at
>> >> idle. There the similarities end.
>> >> On acceleration from standstill the Power Boost Valve fuel pressure
>will
>> >> increase at 1.7 times the standard rate. This will produce a healthy,
>> >> strong fuel mixture strength which will instantly improve the
>drivability
>> >of
>> >> your vehicle, providing instant throttle response removal of
>performance
>> >> flat spots faster acceleration extra engine performance
>> >>
>> >> The regulator enhances engine performance on acceleration by enriching
>the
>> >> mixture strength. On constant throttle and cruise conditions the valve
>> >> returns to a normal regulator function.
>> >> The Power Boost Valve is simple to install and in most instances basic
>> >> fitting instructions are provided. These units are mechanical and are
>> >> considered maintenance free.
>> >>
>>
>>================================================ ===========================
>=
>> >> =====
>> >>
>> >> The US spec Miata (at least the 1600) doesn't seem to me to have these
>> >> problems and, if anything, may even run a bit rich. There must be
>> >> differences between EPA and EEC regulations.
>> >>
>> >>
>> >>
>> >>
>> >
>> --
>> Leon van Dommelen Bess, the Miata Bozo, the Miata
>> http://www.dommelen.net/miata
>> The only thing better than a white Miata is two white Miatas
>
--
Leon van Dommelen Bess, the Miata Bozo, the Miata
http://www.dommelen.net/miata
The only thing better than a white Miata is two white Miatas

"Leon van Dommelen" > wrote in message
...
> "Chuck" > wrote:
>
>>Hi Leon;
>
>>I hear that the city with the arch is getting more rowdy these days.
>
> I assume so, but I think you are confusing me with Lanny. I am the
> one in Tallahassee.
>

WHAT? No McDonalds in Tallahassee ?
<---{ LOL }---> I know, I know !

--
I work for the ILEC ...." stuff happens! "

My Bad, So Sad! Sorry! attached to the wrong thread I guess.

I'm afraid I haven't been in Tallahassee in so long that I've forgotten when
it was.
On the other hand, I spent years going thru Florida on 75 about twice a
month.
We had a condo on Marco from 1976 to 2004.) Had to stop making the trips due
to health, so we sold it.
(Ah, well, the condo was purchased new for ~48k, and sold for 374k cash in
hand!)

"Remove This" > wrote in message
news:kkl4h.4108$C57.2927@trndny05...
>
> "Leon van Dommelen" > wrote in message
> ...
> > "Chuck" > wrote:
> >
> >>Hi Leon;
> >
> >>I hear that the city with the arch is getting more rowdy these days.
> >
> > I assume so, but I think you are confusing me with Lanny. I am the
> > one in Tallahassee.
> >
>
> WHAT? No McDonalds in Tallahassee ?
> <---{ LOL }---> I know, I know !
>
> --
> I work for the ILEC ...." stuff happens! "
>
>
>
>
>

"Chuck" > wrote:

>My Bad, So Sad! Sorry! attached to the wrong thread I guess.
>
>I'm afraid I haven't been in Tallahassee in so long that I've forgotten when
>it was.
>On the other hand, I spent years going thru Florida on 75 about twice a
>month.
>We had a condo on Marco from 1976 to 2004.) Had to stop making the trips due
>to health, so we sold it.
>(Ah, well, the condo was purchased new for ~48k, and sold for 374k cash in
>hand!)

The wonders of real estate inflation.

Leon


>"Remove This" > wrote in message
>news:kkl4h.4108$C57.2927@trndny05...
>>
>> "Leon van Dommelen" > wrote in message
>> ...
>> > "Chuck" > wrote:
>> >
>> >>Hi Leon;
>> >
>> >>I hear that the city with the arch is getting more rowdy these days.
>> >
>> > I assume so, but I think you are confusing me with Lanny. I am the
>> > one in Tallahassee.
>> >
>>
>> WHAT? No McDonalds in Tallahassee ?
>> <---{ LOL }---> I know, I know !
>>
>> --
>> I work for the ILEC ...." stuff happens! "
>>
>>
>>
>>
>>
>
--
Leon van Dommelen Bess, the Miata Bozo, the Miata
http://www.dommelen.net/miata
The only thing better than a white Miata is two white Miatas