Hi Ed,

I remember your fuel trim map from Sun n Fun.

Where is your manifold pressure tap located if you don't mind?

Paul


Not at all, Paul

I have two MAP taps - I use the stock ones in the lower N/A cast aluminum
manifold that I adapted for my two secondary injectors. I just run a tube
off of each and then I "H" the two tubes together before a tube on each
outside leg of the "H" takes the pressure to the MAP sensor barbs in the
EC2.

  The idea was in the unlikely event one MAP tap became plugged, both MAP
sensors would get pressure from either tap. Also I figured it might dampen
the pulses a bit.  I've never had any problem taking it from those locations
- they appear far enough away not to be perturbed noticeably by the opening
and closing of the intake ports.

Many advocate taking the tap just behind the throttle plate - probably OK,
but I figured there is  likely to be a bit of turbulence in the wake of a
partially opened throttle plate - so I would put them at least 3-4 inches
behind the throttle plate - just an opinion, no data to support it.

Ed



Ed Anderson

Rv-6A N494BW Rotary Powered

Matthews, NC

eanderson@carolina.rr.com

http://www.andersonee.com

http://www.dmack.net/mazda/index.html

http://www.flyrotary.com/

http://members.cox.net/rogersda/rotary/configs.htm#N494BW

http://www.rotaryaviation.com/Rotorhead%20Truth.htm


That is what we found by sampling the MAP at 1000 samples per second.

Is there anyway you can take a picture of your EC2 interface
fuel trim map?

Paul Lamar