EFI control units

[Orin Harding]

Mike,
I have been using the TEC II made by Electromotive on my '79 MGB and it works 
well. This ECU provides not only fueling control but also direct ignition 
control.  The coils are supplied with the ECU and you do away with all of your 
old distributor, etc.  You'll have to mount a crankshaft timing wheel, 
probably on the harmonic balancer, and sensor.  Other sensors are water temp, 
air temp, throttle position, O2, and MAP or MAF sensors. There is an output to 
control a GM style idle air control motor. The biggest drawback to this unit 
is it's cost. Basic ECU for 6 cyl, with no sensors, is $1030.00 and the 
software another $300 to $500 depending on which version you get.  To use a 
MAF sensor you'll need the $500 version.  Sequential injection is available 
for an additional $250.

I have tried both MAF and MAP and found that MAP was a lot easier to install 
and get running OK.  You'll find that MAF sensing adds to the overall system 
hardware complexity especially the intake.  You have to be very careful not to 
have any air leaks at any point after the MAF sensor with straight runs of 
pipe upstream and downstream of the sensor. As I said, MAP is a lot easier.

If you're not in a hurry, I've found a unit in England, currently under 
development,  that should sell for about $1000 and will have the same features 
as the TEC II plus adaptive fuel control.  I'll be seeing the manufacturer 
next month and hope to bring a unit back with me then.  I'll post a note here 
regarding the unit.




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From: 	owner-diy_efi at coulomb.eng.ohio-state.edu on behalf of Michael D. Porter
Sent: 	Wednesday, July 24, 1996 1:04 AM
To: 	diy_efi at coulomb.eng.ohio-state.edu
Subject: 	EFI control units

I'm very new here--just been reading this group for a couple of 
weeks--and have a question or two on available control units.  I've been 
sorting out what I think I need to convert Triumph six-cylinder to 
digital FI, but have not yet found a control unit which seems to meet the 
requirements I've set.  

I'd like to find a controller with sequential injection and is also 
programmable via laptop and can accept input from a domestic MAF sensor. 

I realize many of the folks here are concerned with building their own 
control units and doing much or all of their own programming, but I 
simply don't have the time or test equipment for that sort of 
undertaking.  

Any suggestions?
Thanks.