> In any engine the fuel  is nonuniformly distributed among cylinders,
> i.e. fuel/air ratio is  different for each cylinder.  There are many
> gadgets on the market claiming  improvement of the fuel distribution,
> but I did not see these solutions used in production cars. In addition
> some of these gadgets have  propellers rotating at ~60,000 rpm and
> destruction of such a rotary gadget equals destruction of the engine,
> since remains would be sucked into the engine.
>
> Problem like that must be important in racing cars, and I guess that
> many people looked at these issues. Is anybody  aware of a SAFE and
> WORKING solution assuring equalization of mixture in different
> cylinders? Is any of existing market gadgets any good?
>
> Thank you,
>
> Jerzy
>
> Cylinders? We have no stinking cylinders. I have been after
> Tracy for years to monitor the EGT and adjust the injectors
> accordingly.
>
> Paul Lamar


With the engine management computer that I plan on using, the injectors

can

be adjusted to equalize the mixtures between rotors. I'm sure most
management computers would have this feature. I would think you would need
two oxygen sensors fitted to do these adjustments correctly. You could
remove them once the adjustments have been made. I have Tracy's EC2 but

have

decided to replace it due to the user friendly tunability of other
computers. Just my two cents !!
   Michael

What kind of computer are you using Michael? Tracy's computer does not use

the

O2 sensor as O2 sensor are contaminated by 100LL aviation fuel.
Sometimes that is all you can get on a cross country flight.

I agree with you on the user friendly part. I am thinking of the
Mega Squirt because I know how to program it to do what I want
it to do. Mainly data acquisition.

Paul Lamar

I'm using a EMS Wolf 3d engine management computer. It is manufactured
locally here in Australia. Probably not the best on the market but I have
dealt with them before, and found it easy to program and was reliable.(
running in a car ).   I wasn't planning on using oxygen sensors during
flight. But it could be used as a tunning tool for setting the fuel maps and
timing. I believe you can get about 100 hours from the sensors with avgas. I
will be using the throttle positioning switch for lower rpm settings and
manifold pressure at higher rpm. Will result in a better idle. MAP is to
erratic for use at a low rpm. IMOP.  I don't know of the Mega Squirt but as
you say if you know how to program it and feel comfortable with its
reliability all the better. Like most things in life nothing is perfect but
a compromise.
Michael