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Specialist Components Spi Plug & Play With 2 Plug Ecu


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#31 tmsmini

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Posted 31 May 2018 - 03:46 PM

A couple of good points have been brought up in this thread. I know Chris, the original poster is on hold with the ECU swap. He did get some information from SC.

 

On resolving the other running issue, don't forget that even a new engine can have issues. In my case with my SC installation I had a bent valve that I did not discover until I went to re-torque the head. The basics have to be working properly before any fuel injection layered on can work properly.

 

Finding a tuner/configurator familiar with the details of the SC Typhoon and Delta ECUs is next to impossible in the US. It also sounds like it may not be that easy in the UK either. Just be sure to understand that it will take some work to get it running properly. Most tuners tune for maximum horsepower. We use our cars daily, so maximum horsepower tuning is not really needed. Our mileage around town has dropped, most likely due to running rich at lower engine temps and on short around the town runs. So a work in progress...

 

I only have direct experience with the SC system, but I did start out trying to use a Microsquirt based system. I ran into some issues with adapting Rover components and moved on to the SC system as it was "plug and play." A few years later I am still plugging and playing.

 

The problem with engine configuration comparisons is that they are never exactly the same. The SC systems allow the logging of data as a way to make real comparisons as modifications are made. This really does need to be done on a rolling road as seat of the pants meters are not accurate. SC have a new module for the Delta ECUs that allows data logging without a connected PC.

 

One thing I have learned is that the SU carburetor is a pretty amazing and forgiving device...

 

Edit: Just reread this as I composed it over a period of time. I did not really add any thing of value to the thread, but I do have two cars running with SC Typhoon computers. One with the SC TB and the other an HIF 44 with ignition only. We are planning a trip at the end of June with both. I will have more info then.


Edited by tmsmini, 31 May 2018 - 05:38 PM.


#32 Foobah

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Posted 09 June 2018 - 08:51 PM

Hi,

To add to my earlier comments on this 

 

The Avonbar folk suggested the same re alternator and no difference.

This is where we are now with our gremlins:

After triple checking absolutely everything we have ended up with finding that cylinder 1 isnt firing properly.

The engine idles but feels/sounds like its intermittently running on three cylinders - is rough but cleans after 3k revs. It will only idle when warm.

When it does run cylinder 1 is running around 20 degrees cooler than the rest.

Using the dials from SX tune software from SC we can see that the spark is really eratic.

Eveything in the engine is brand new and high quality. 

We have the SC/Delta ECU, SCs injection/throttle bodies and the SC short harness connecting the ECU to injectors etc

We have leak tested manifold/exhaust connections.

Compression is good, coil is good, Avon bar HT leads, correct/new spark plugs.

We have a narrow band bosch lambda attached to the LCB sitting between cylinders 4 & 3.

All we can think of is that the base map is wrong?

Incredibly frustrated and out of options.

Any help gratefully received - this seems now to be pointing to a rolling road, which is pretty disappointing.

(Graham Northern Power - thanks for previous comments - does this change any of your thinking?)

Cheers folks,

Damian



#33 tmsmini

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Posted 10 June 2018 - 09:50 PM

I don't see mentioned which crank sensor you are using. Have you selected the right profile for it?

Terry

Edit:

"Using the dials from SX tune software from SC we can see that the spark is really eratic."

I think you will see this until some of the competing settings are sorted out. It seems to fight itself at times. But this should not prevent running.


Edited by tmsmini, 11 June 2018 - 01:25 AM.


#34 Allrounder

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Posted 11 June 2018 - 12:27 PM

So when I had a similar problem after rebuilding my engine, would miss and hesitate below 2500rpm I took a recording of the data and emailed it to scs-delta. Had a reply the next day saying the crank signal was dropping out and to check the rooting of the crank sensor. The alternator or HT leads can cause interference. The rooting has been the same for years but I had fitted a new alternator. Old one back on and not had a issue since.

If you haven’t already I’d take a recording of all the inputs/outputs and send it to them to take a look at. There will be a lot of information to load onto a spread sheet.

Edited by Allrounder, 11 June 2018 - 12:30 PM.


#35 Bat

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Posted 11 June 2018 - 04:42 PM

Hi,
Can you see from the software what lambda sensor it's configured for?
Can you disable it and tune manually to get it running better?
Are all 4 spark plugs the same looking when you pull them out.
Have you got a rocker gear problem holding the valves slightly open one cylinder one?
What vacuum reading are you getting at idle?
Cheers :)

#36 Foobah

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Posted 15 June 2018 - 09:06 AM

Ok - thanks very much to everyone, really is helpful.

Tried disconnecting the alternator, no difference.

In summary:

We have no leaks, gaps or dodgy/old Rover parts in place. 

We have fiddled with the settings manually and get it running a bit better.

We have it running but it is really rough below 3k. It runs very rich and still feels like it has a slight miss-fire on cylinder one.

We have sent data across to Delta and they feel the map is OK.

Car comes back from the garage tonight. I can fire it up and post the readings on here later.

One last thought - it doesn't have a cat fitted. Could that have a bearing?

Cheers everyone.

Damian



#37 Midas Mk1

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Posted 15 June 2018 - 09:31 AM

Sounds stupid, but are you running resistor plugs & leads? gapped correctly?  Sounds weird, mine ran ok even of SC's default basemap before I had mine mapped.


Edited by Midas Mk1, 15 June 2018 - 09:31 AM.


#38 IronmanG

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Posted 11 February 2020 - 07:17 PM

Was this issue resolved Foobah?




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