MyECU replacement

[guzzijack]

This is for a V10 Centauro but Cliff also does a My15M for the V11 Sports and other later model Guzzis.

 

MyECU

 

I recently took delivery of one of Cliff's My16M replacement EFIs, built into a Fiat WM 16F box I sourced on eBay. Warmed the bike up on the O/E box as instructed and then fitted the My16M. The bike is standard apart from an aftermarket crossover and a K&N in the O/E airbox.

 

I loaded up Phil Arnold's latest map, dialled in the TPS idle setting (83) and saved it to the map file and took the C for a spin around the block. I was immediately struck by how much smoother the bike was at small throttle openings and in the lower rev range.

 

Whereas before it was all a bit notchy below 4K and the throttle was doing the light switch thing, now it was like riding a totally different bike!!!!!!!! About as smooth as a Guzzi can get.

 

Then I took it for a trial blast up our local 7 mile stretch of dual carriage way - no turn offs and only a couple of lay-bys and bridges so you can have a good look-see for the Plod on the way out and hit it on the way back in .

 

Although I had previously set the EFI up by the book, (not the original EFI factory manual with it's 'twist the TPS and let it go to set it' approach I hasten to add ), and done the TB balance to the nth degree prior to the trip down to the Trofeo Rosso, the bike was still a bit, well, 'brutal' in response to large throttle openings and seemed to bounce off the rev limiter very quickly to remind me to change up.

 

After fitting the MY16M with Phil's latest map I found the perceived response of the bike a bit deceptive at first as it was all so smooth everywhere in the rev range. It was only by noting where I was changing up and actually looking at the speedo - plus the rapidity with which I was coming up on other traffic - that I realised how quickly the plot was shifting and how near I was to needing a change of underpants

 

As you can probably gather, the initial impression was very, very favourable and now that I've put a few more miles on it I can't fault it. So the verdict is, money well spent. FWIW i've got a PCIII on the '97 Cali EV and, although there was an improvement in driveability noticed after fitting it, it was nothing like the transformation made to the Centauro. Cliff's ECUController software is also a breeze to use.

 

Hats off to Cliff & Phil.

 

Graham

[luhbo]

Hi Graham

 

Congrats to your My16M. It's fine that you like it probably as much as I like my My15M. I bought mine in 2004 and have it on the bike since this time.

As I was used to a rechiped WM15 I could not notice such remarkable improvements, 'cause the WM15 is not a bad ECU I think.

What I like most is the fact that I could build my own ECU with the kit supplied by Cliff. I just followed Cliff's assembly instructions and things went together without any problem. That's the thing for my Ego.

The most appreciated practical advantage is the capability of the My15M to be run in closed loop mode with the help of a wideband O2 probe. This in combination with the possibility to choose different O2 targets for every breakpoint or region of the map makes it 'unbeatable'.

 

The My15M/WideBand O2 combo is even capable to cope with a corrupt TPS. All I noticed when mine went nuts was the fact that suddenly the Optimiser showed correction factors from over 15 to 25% as soon as I had opened the throttle more than to a certain degree. At full throttle again all was fine. Probably alone this diagnostic feature saved me money and shop time worth the price of this really nice enhancement to my bike.

 

I don't need one, but it's so much fun to have one. If you have any questions about how mine works feel free to contact me.

 

Hubert

[quazi-moto]

How much labor and cost is involved with installing the wideband O2 sensor?

[big J]

How do you plot ignition advance at light load/mid range revs?Is there a MAP sensor?(manifold pressure)

[luhbo]

How much labor and cost is involved with installing the wideband O2 sensor?

 

Search for LC-1 or under WBO2.com. Actually the sensors and controllers are surprisingly cheap.

 

Hubert

[luhbo]

How do you plot ignition advance at light load/mid range revs?Is there a MAP sensor?(manifold pressure)

 

Actually not at all. Under this aspect it's not really closed loop in the meaning of how this expression is used in theory or perhaps for car applications.

 

IMHO this 100% pure "closed loop" would make not much sense on a bike. Just because the transition time between WOT and idle and also the response of the engine is so quick and lifely that a proper map is a must. BTW, the automotive applications also are map based. O2-, Knock- and MAP-sensors are used to do some fine tuning, not more. I think you know about these things.

 

To get a proper map is no problem with My15M and Optimiser. I can make changes to my O2 table and after just one day commuting (60km one way) the ecu has auto-adjusted all the changed cells.

 

I think that's exactly the same what a O2/ARF based dyno tuner does. I can have this every day, with the additional advantage of up to 6 different O2 targets for the optimisation. Under load I can go rich, at idle lean, when it pings I reduce the spark advance and so on.

 

The usable benefit is: optimised OEM 6.3l/100km - My15M with my own map 5.4l/100km.

 

Don't get me wrong, I had a lot of fun with the OEM unit, too. Until I lost the resoldered eeprom

 

So, those who like such possibilities will enjoy it.

 

Hubert

[Alex-Corsa]

That sounds great , all I need is to get provided an broken 16MECU box for mine in order to instal the 16M to it(when I descide to buy it).If there is a box available anyone can notify me.l was thinking to jinstrall the My16M thing, all I hear it does are so amazing features.

I didn't have an extra box for it and didin't find one so I left this project behind and start doing some chips with on the OEM ECU at the moment.

Would definately like to give it a try(My16M) on the future.

Something I never had quite understood is what happens if you turn the bike to twin spark, is can the My16M work with such a mode after? I guess I have to ask Cliff about it, at the moment I don't beven have an extra box.

 

 

How much labor and cost is involved with installing the wideband O2 sensor?

 

Yes the LC-1 controler seems to be very easy to work with and connect other instruments of the company to it.Very compatible and easy , I have it, and recommend it as well.

About cost visit the Innovate and find some dealers about it.

I have found a nice offer here in Europe atMFT and avoid the extra customs costs.Then all it needs is a hole at the exaust to solder the steel bung for the sensor to screw it in, and the power supply for the controler (or instrument too if you have).The LC-1 is quiter small to fit it anywhere under the seat.

See also this thread abou dyno charts about my LC-1 http://www.v11lemans.com/forums/index.php?...=8556&st=15

[big J]

Actually not at all. Under this aspect it's not really closed loop in the meaning of how this expression is used in theory or perhaps for car applications.

 

IMHO this 100% pure "closed loop" would make not much sense on a bike. Just because the transition time between WOT and idle and also the response of the engine is so quick and lifely that a proper map is a must. BTW, the automotive applications also are map based. O2-, Knock- and MAP-sensors are used to do some fine tuning, not more. I think you know about these things.

 

To get a proper map is no problem with My15M and Optimiser. I can make changes to my O2 table and after just one day commuting (60km one way) the ecu has auto-adjusted all the changed cells.

 

I think that's exactly the same what a O2/ARF based dyno tuner does. I can have this every day, with the additional advantage of up to 6 different O2 targets for the optimisation. Under load I can go rich, at idle lean, when it pings I reduce the spark advance and so on.

 

The usable benefit is: optimised OEM 6.3l/100km - My15M with my own map 5.4l/100km.

 

Don't get me wrong, I had a lot of fun with the OEM unit, too. Until I lost the resoldered eeprom

 

So, those who like such possibilities will enjoy it.

 

Hubert

Thanks,Hubert.I was curious how you alter ign advance from steady state throttle to acceleration,are there separate overlaid maps?I can see how fueling is altered to suit,but not how ignition advance is altered to suit load.I tried to mail Cliff,but it wont work on my confuser.

[luhbo]

That sounds great , all I need is to get provided an broken 16MECU box for mine in order to instal the 16M to it(when I descide to buy it).If there is a box available anyone can notify me.l was thinking to jinstrall the My16M thing, all I hear it does are so amazing features.

...

 

Try to get a FIAT or other car version. The housing and connector should be or even really are the same and those probably are very much cheaper than any Guzzi version could be.

 

I think that's exactly what Graham did.

 

Hubert

 

Thanks,Hubert.I was curious how you alter ign advance from steady state throttle to acceleration,are there separate overlaid maps?I can see how fueling is altered to suit,but not how ignition advance is altered to suit load.I tried to mail Cliff,but it wont work on my confuser.

 

I will post some pics of my maps this evening / this weekend. This will make things clearer.

 

How much labor and cost is involved with installing the wideband O2 sensor?

 

I forgot to mention that you may have to buy two probes for the new My15M MK2 because it can handle left and right cylinder separately.

 

Hubert

[guzzijack]

Try to get a FIAT or other car version. The housing and connector should be or even really are the same and those probably are very much cheaper than any Guzzi version could be.

 

I think that's exactly what Graham did.

 

 

 

That's right. It appears that all the Weber Marelli WM16 series ECU boxes are the same in terms of connector and housing - and those are the only components that matter if you are going to have a My16M.

 

Many were used on various models of Fiat during the 1990s and the one I sourced was from a Punto 1.2ie on eBay for £8. Try doing an eBay search under 'Fiat ECU' or similar and you should pull up quite a few matches. Either that or a local car breakers will be able to help. If your going to bid for one on eBay have a good look at the picture or email the seller to ensure it's a 16F box as the later Puntos have a different ECU.

 

No doubt 15M boxes are also available from some automobile application it's just a question of doing some searching to find out which one

 

I'm waiting for a cheap P8 box from a Fiat Croma or Coupe to show up and then I'll go for one of Cliff's MyP8 ECUs as well.

 

Graham

[Alex-Corsa]

That's right. It appears that all the Weber Marelli WM16 series ECU boxes are the same in terms of connector and housing - and those are the only components that matter if you are going to have a My16M.

 

Many were used on various models of Fiat during the 1990s and the one I sourced was from a Punto 1.2ie on eBay for £8. Try doing an eBay search under 'Fiat ECU' or similar and you should pull up quite a few matches. Either that or a local car breakers will be able to help. If your going to bid for one on eBay have a good look at the picture or email the seller to ensure it's a 16F box as the later Puntos have a different ECU.

 

No doubt 15M boxes are also available from some automobile application it's just a question of doing some searching to find out which one

 

I'm waiting for a cheap P8 box from a Fiat Croma or Coupe to show up and then I'll go for one of Cliff's MyP8 ECUs as well.

 

Graham

 

Cool , thanks a lot for that info , will be getting that.

If there is any code number on the fiat box , let me know.Does it write 16F on it or that's how this ECU box is called?

[Cliff]

Thanks,Hubert.I was curious how you alter ign advance from steady state throttle to acceleration,are there separate overlaid maps?I can see how fueling is altered to suit,but not how ignition advance is altered to suit load.I tried to mail Cliff,but it wont work on my confuser.

 

The tables are 2 dimensional so you get different advance curves for each throttle setting.

You are generally in a different part of the map cruising and accelerating.

 

ECU Ducati works well alsoas Ebay search. Esp. for 15M. Let me know if you are going for an ECU so we dont bid against each other

[big J]

Thanks for the reply,Cliff. I was just curious how the MY system worked.I'm in the middle of doing a MegaJolt diy ecu on a friends race car which uses a MAP sensor for advance,although a tps based system can be used too.I can see how the advance works with the MAP sensor,but I'm having trouble working out how the ecu works out spark advance using the tps.

Does the tps value correspond to a pre-determined table on which spark advance is already calculated?How is the advance initially set?Do you require a knock sensor?

I can understand how a sliding scale advance based on tps values would work,but I cant see how I would set the values for the advance-ie how much do you need at say-4000rpm accelerating hard.Obvoiusly there would be less required as the revs climb and the load lessens,but how is this determined?

Sorry if these are daft questions,but I can see a MY in my future(if some way off at the moment)and I'm interested how it works.

[Cliff]

Below is a snippet from a MyECU map showing spark advance. X axis is RPM, vertical is throttle. Idle is bottom row and full throttle is top row. A MAP system would be doing something similar with vertical replaced with MAP rather than throttle.

 

Hard accel. would put you along the top row, cruise would put we around row 3-4.

 

THR 832 704 640 576 512 448 384 320 256 192 128 96 64 32 0

 

RPM 500 1100 1500 1801 2000 2302 2601 2900 3360 3654 4045 4655 5353 6157 7082 8143

SpkAdv 14 8.20 13.83 20.16 22.50 23.44 24.38 25.78 27.66 28.83 29.06 29.77 32.81 34.92 35.16 35.16 35.16

SpkAdv 13 8.20 12.89 19.45 22.27 23.44 24.61 26.25 28.13 30.00 30.47 30.70 32.81 34.92 35.16 35.16 35.16

SpkAdv 12 8.20 12.42 18.52 21.56 22.97 24.38 26.48 28.59 30.47 30.70 30.70 33.05 34.92 35.16 35.16 35.16

SpkAdv 11 8.20 12.42 18.75 22.27 24.14 25.31 27.42 29.06 31.64 32.81 33.28 35.39 37.27 37.50 37.50 37.50

SpkAdv 10 8.20 12.42 18.75 22.50 23.20 25.31 27.42 29.06 32.81 34.69 35.86 37.73 39.61 39.84 39.84 39.84

SpkAdv 09 8.20 11.02 16.41 20.63 22.73 24.38 26.72 28.83 32.58 34.45 36.33 39.14 40.31 41.02 41.02 41.02

SpkAdv 08 8.20 9.84 14.30 18.28 20.39 22.97 26.02 28.59 33.28 35.86 38.91 40.78 41.72 42.66 42.66 42.66

SpkAdv 07 8.20 9.61 13.83 18.05 20.39 22.03 25.55 28.36 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 06 8.20 9.38 13.36 18.98 21.80 23.91 26.95 29.06 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 05 8.20 9.38 13.13 19.22 22.73 25.31 28.83 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 04 8.20 9.38 13.13 20.39 24.14 26.95 29.30 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 03 8.20 9.38 13.13 20.63 24.61 28.13 29.53 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 02 8.20 9.38 13.13 20.86 25.08 29.30 29.77 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 01 8.20 8.91 10.78 20.86 25.08 29.30 29.77 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

SpkAdv 00 8.20 8.20 8.20 20.86 25.08 29.30 29.77 29.77 34.22 37.73 40.78 42.42 43.59 44.06 44.06 44.06

[big J]

Aaaaah,gotcha!Thanks Cliff,much clearer now.

 

Having studied it,hiw do you calculate the advance.The one I'm doing with the map sensor gives a reading which is noted on the ecu map.How do you do it with the tps?