My New ECU

iwilson · Mar 26, 2019

I only changed to OMEX because my dealer snapped the mounting lugs off my factory SC ECU. By that stage Norton had changed to OMEX and sent an OMEX ECU with a hybrid harness as a fix. I wasn't particularly happy as it introduced a load of potential additional failure points (huge number of extra connectors). In the end I purchased the programmable SCS-Delta 400 ECU (in a twist SC in the meantime had split into two companies, SC and SCS-Delta)! This got rid of the hybrid harness and my OBDII port worked again. As importantly it allowed me complete access to the engine i.e. not just mechanically but the EFI software as well. Up until then, it's been mostly speculation as what role the ECU played in some of the issues. But I think progress is now being made.

An OMEX ECU should be just as capable as the SC factory ECU. The ECU's themselves shouldn't really be responsible for any difference in power. That's down to the skill of the tuner and the regulatory regime they're working within. I'm pretty sure the ECU suppliers are responsible for developing the maps not Norton themselves (SCS have said as much). In terms of the other issues (idle etc), it remains to be seen what the true cause and fix are. I'm still beavering away in the background trying different things and speaking with related parties. I'll put up another post when things change - it still turn out to be something stupid I'm doing!

961 S · Mar 28, 2019

lcrken said:
Bill, I fitted the 400 when I first got it, and it worked well, but I did not manage to sort the idle problem with it. I also sent the original ECU (Modified Typhoon) to SCS and had it unlocked, and I've been working with it since. I do plan to get back to working with the 400 soon, but found it quite fascinating to try to improve on the performance with the original ECU. It seemed to me that anything I found with it might be of value to other owners, were anything I found with the 400 would only be of value to someone who had bought one of them. At this point, I've managed to get the idle problem sorted by removing the O2 sensors, the cats, the IAC valve, and blocking the connecting passage in the throttle body. I suspect removing the IACV was the significant change. More details on that in other posts. As it is now, it idles perfectly, once warm, and does not have any of the high idle issues. It acts just like a well set up carbureted bike. It does require holding a faster idle after startup to get the engine warmed up a bit, but not much, and I have not found that to be a problem in normal use. I just got back from a ride today, and I love the way it runs now. It might be more of an issue in cold climates. I plan to play with the original ECU a bit more, and then go back to the 400 and see what I can do with it.

Ken

961 S · Mar 28, 2019

lcrken said:
Bill, I did consider a PC, but a new ECU, or even unlocking the original ECU, offered way more control over all the engine management variables. A PC offers no control over the idle air control settings, acceleration richening, closed loop settings, cold start and running settings, and so on. The PC offers a lot for the money, and is much simpler to use (I have one on my Ducati Multistrada) but I wanted to be able to play with all settings. The D400 ECU also offers a lot of features that I might never use, but then again, Things like boost control, nitrous injection control, pit lane speed limiter, shift light trigger, closed loop wideband O2 sensor control. Endless time waster opportunities.

Ken

Ken
You make a valid point. I feel the original SC ECU has little in the way of modifying so the SCS Delta 400 with the free software may be the way to go. Can you tell me where you ordered the SCS Delta 400 from and did they supply an on board map. Do you have access to a tuner or are you on your own.
Bill

lcrken · Mar 28, 2019

961 S said:
Ken
You make a valid point. I feel the original SC ECU has little in the way of modifying so the SCS Delta 400 with the free software may be the way to go. Can you tell me where you ordered the SCS Delta 400 from and did they supply an on board map. Do you have access to a tuner or are you on your own.
Bill

I bought it from SCS at

https://www.scs-delta.co.uk/

and they did supply it with map installed, as well as sending me the map file when I asked.

There's some more info on it on the first page of this thread.

I haven't found a tuner locally who is familiar with it, so I'm on my own.

Ken

Clive · Apr 1, 2019

TonyA said:
How many owners are happy with their Norton Factory New Omex bikes ? -?

2017 ABS euro4 decat and open pipes 6500 miles - I am pretty happy with the factory Omex setup. The MAP sensor cam sensor and head temp sensor are replaced as a precaution and my starting issues were cured with a new starter motor. So far the only niggles are where the ecu seems to struggle to control the idle and often stalls if I let the bike speed drop in a high gear to below 2000rpm then pull the clutch. It's like the idle control algorithm cuts in below 2000 and is trying to reduce the engine speed with the air valve then when I pull the clutch the engine dies before it can regain control. A repeatable effect and my theory only. Now I am used to blipping the throttle to catch it so no big deal. Other than that no tickover problems. So why don't all bikes behave themselves like mine? The air leaking past flanges through loose bolts seems common. I wish we could simply read the transducer inputs on a connected PC so afflicted users could compare against standard readings. I don't want to mess with mappings or steal Norton's hard work - just look at what the ECU is basing its fuelling on.

At some point in the future if there is no factory support on these bikes can we plug in a standard Omex (600?) ecu and develop our own mapping? Anybody know?

TonyA · Apr 1, 2019

Is it possible that your throttle butterfly set screw needs to be turned in just a bit more ? Also what kind of fuel mileage are you getting with your bike when out on a longish trip ? Just want to compare to my SC ? I can get 45 to 53 miles per US Gallon. depending on speed . I am looking into buying the SC to New OMEX conversion from Norton.

ntst8 · Apr 1, 2019

TonyA said:
I can get 45 to 53 miles per US Gallon. depending on speed .

That's impressive, I only managed 51 miles to Her Majesty's gallon at last test, and wasn't unhappy with that until now.

TonyA · Apr 2, 2019

What speeds ? My best comes at a sedate 60 to 67 mph indicated (real 58 - 65 mph). Above that it drops again . If I am running a steady 80 mph indicated (real 75 -76 mph) i am only getting 45.5 mph fully bagged . Un-bagged I can get nearly 48 mpg at that speed .

Britfan60 · Apr 2, 2019

During break in I was getting about 44 mpg. Always decatted and open. Then 39 to 41 depending on ride. Sometimes 80+ most of the way. Last fill up with easy 65 mph, only got 35 mpg. Also had a little stalling after restart when hot and throttle taking longer to drop on decel. Summers coming. Here we go again.

Clive · Apr 2, 2019

I seem to get around 50-55 mpUKg with a fairly active riding manner....

TonyA · Apr 2, 2019

Also , I am smaller only 155 lb (70.5kg) . A 220 lb person (100kg) won't do as well . Same reason Voodoo can run with the R9T ?

ntst8 · Apr 2, 2019

TonyA said:
What speeds ? My best comes at a sedate 60 to 67 mph indicated (real 58 - 65 mph). Above that it drops again . If I am running a steady 80 mph indicated (real 75 -76 mph) i am only getting 45.5 mph fully bagged . Un-bagged I can get nearly 48 mpg at that speed .

Nothing over 70MPH, quite twisty roads so through the gearbox a bit but not excessively heavy on the throttle. 6'2" and 95kg so a bit of windage.

TonyA · Apr 3, 2019

I would say you are doing ok for fuel mileage . What ECU , SC or New Omex ? And what map ? I am running the #077_PR6_0116 for the SC ECU . Some members are still running #090 and #091 in their SC ECU Commandos and are getting in the low 40's mpg. And that explains why they don't get as well MPG its too rich but they say it runs or idles better . I am running what was recommended by Norton for my Commando Short exhaust. There is software that queries the ECU to find out what map you have in it , but mine reported unknown ? There may be a reason for this I don't know. But while I was at Coote's we queried and re-installed #077_PR6_0116 for the SC ECU.

Britfan60 · Apr 4, 2019

A little better with yesterdays fillup, but not much. 36.7mpg. Fairly easy riding too. 4000 rpm most of the way. 65 to 70 mph. Fueling is getting a little quirky too. Pretty heavy on the vibes at 4000.

My New ECU

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