Fordnatics List Archive

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Mail From: (email redacted) (Robert King)


>
> RK> The debate over the Cobra air meter continues. Most of the folks on
> RK> the net seem to think I'm running very lean because of the meter, but I
> RK> haven't had much in the way of pinging. I HAVE had a little bout with
> RK> part-throttle pinging, but that was after I adjusted my TPS and throttle
> RK> idle set screw. I think the engine may be going into WOT mode too soon
> RK> now, so I'll be checking it at the track tonight. I've also borrowed a
> RK> stock 55mm air meter from Josh and I'll be making a comparison of the
> RK> two meters. They should be electrically identical for the Cobra meter
> RK> to work (as I suspect it will.)
>
> So, you are running 19lb injectors? I thought the Cobra meter was for 24lb?

Yes, I'm still running the stock 19# injectors.

More and more, that seems to be a common misconception. Air meters
arn't calibrated for any particular injector use, the computer is.
"Calibrating" an air meter for injector size is just a way of faking out
the computer to work successfully with a non-stock (for the computer,)
injector size.


> If not, the Cobra CPU is... isn't it?

Yes. It's set up for 24# injectors. I suspect that a stock air meter
(55 mm,) would work fine with the Cobra computer from a fuel delivery
persoective.


> BTW, Josh was telling me about some guy from Dearborn that comes down to
> help his work out... I told Josh about a guy I knew up there too... turns
> out it is the same guy! Mike Wesley... funny huh? He said he wanted to
> see my car if he ever came down here.. I guess I missed him. Josh said
> he talks to him all the time. This world is really small isn't it?

It suprises me sometines. I was driving down Josey Sunday morning,
and looked in my mirror to se a familiar sight - the *same* pickup truck
that staged behind me on my last run Friday night.

As far as my "experiment" with the Cobra meter, Josh loaned a stock
meter to me last week, but I havn't had a chance to play with it yet.
I've had the conversion in for about 2000 miles of mostly highway driving.
So far I've had no pinging (except for a very brief bout of part-throttle
pinging that has been corrected.) I pulled a spark plug Sunday morning,
and it looks perfect - no lean mixture here (at least on that cylinder!)
The only other thing I can think to check is the O2 sensors, and that
will come soon...

- -- Robert

P.S. I'm posting this to Fordnatics as it is a continuation of my air meter
thread there.