Canems ECU 1380 N/A
Turbo Mini Forums

For anybody who is searching for info on the Canems ECU , I know there isnt much as I have been searching for ages! but I have one now so I suppose it would be a good Idea to share what I have.

Bare in mind that this engine is currently running on the base maps on the ECU, it will be set up on a RR in the future as the engine beds in.

Engine:

1380 A+
286 Cam
1.3:1 Rockers
Maniflow LCB exhaust manifold and system.
Bosch Wideband Lambda sensors mounted on exhaust manifolds, one on centre branch other on the straight part of the Y.

Lambda 1 for AFR1 is on the Centre Branch
Lambda 2 for AFR2 is on the Y part.

Fuel system:

MPI tank
MPI fuel Rail
x2 34mm Mikuni TB,
Delphi 500cc Fuel Injectors

Now onto the Base Maps :

Ignition:


Fuelling:




Data logging showing AFR:

Heres a AFR from a 15min run today, as the map above was indicating a very lean mixture on the inner cylinders:



I think its worth noting the time on the X axis, the Data logger either doesnt allow you to view the entire drive, it is graduated every 10 secs, which is a PITA. Ill try to find if I can change the scale.

Would the position of the Lambda2 on the straight part of the Y affect the readings as its getting both exhausts from 1 and 4 combining here?

Is the scale 10-20 for the afrs? Still look quite far apart.

Edit: also how are you finding the mikunis? I'll most likely be running them on my na engine

Edited by sturgeo on 29th Jun, 2011.

Looks like you getting to grips with it anyway ciaran Well done great to se somone trying somthing different :)

What can you adjust on the Canems ECU to equalize the AFRs? Is it still a semi-sequential injection scheme (Marcel's original method)? Does it use the MPi cam sensor signal?

Jean

http://www.jbperf.com/

that is very lean, looks too much for just port robbing to me,

I'd be looking for air leaks upstream of the lambda, and try swaping them over as a double check.

also theres room for a shed load more advance at cruise, that map looks like its just emulating a dizzy curve , i'd increase it by 10 deg at cruise straigt away.

As far as I'm aware it doesn't use a cam signal but it does have a injection timing table.

Ciaran, can you post up a screenshot of that please? Might be able to give you a few pointers to get your afrs closer until you get it on the RR

Does the canems include 2 wideband controllers or are they external units? Might also be worth checking the calibration on them.

http://www.jbperf.com/

This all started here http://www.turbominis.co.uk/forums/index.p...tid=428107&fr=0

Air leaks basically.....

But even if the air leaks are fixed, the readings on the two widebands are just too far apart for it to be running well.

And as Jean says, we all expect the outers to be lean, not the inners.

Schrödinger's cat - so which one am I ???

Right Im just back from another run, I can clear up a few things:

1. Yes there is a airleak, its a fair bit down stream of the lambda at the Joint between the manifold and the exhaust.

2. The wideband sensors are built into the software.

I decided instead of using the standard display to just swith it to just showing the AFR, this is interesting.

Under load the AFR gets leaner on both, it begins to richen up as it idles for example at traffic lights, I set the outer wideband to be the sensor to dictate the feedback, which instead of refrencing the AFR map for its info, ive set it a target of 13.4 , which I think isnt OTT on either rich or lean, and from what Ive read the older engines prefer slightly rich.

back to the AFR guages, as soon as you accelerate, the AFR on 2 and 3 shoots straight to 20, now its probably more as this is the max on the guage, it stays here under cruise and load, then drops during Idle. Interestingly the outer one hovers in and around the 13.4 , Ill try swap to the sensor on the centre branch to see if that improves matters.

Its worth keeping in mind that these are base maps, and Im learning from nothing as Ive no previous experience other than a few labs on control sys in college.

Im going to pull the plugs out as that will give an idea of whats going on and will discount a sensor or air leak issue.

http://www.jbperf.com/

If you haven't already, have a good read of this: http://www.canems.co.uk/siameseports.php

Ideally you'll want a rolling road that will let you play with your injection timing, most operators only do ignition and ve tables.

Seems odd that the numbers appear to be grayed out on the table you posted, I might try and get hold of the software and have a look at it.

I personally believe that the canems system can be made to work better than a carb. We personally didn't have much luck with this method but with time working on your injection timing table and on a RR at various rpm/load sites you should be able to do a better job. It'll be better than any wet manifold setup which are about as good as pissing into the wind.

http://www.canems.co.uk/pdf/injection_manual.pdf

Check out page 46, all of the cells are editable. Might be worth giving canems a call and making sure you have the right firmware etc installed for the Siamese ports.