Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) New Roadster ECU Remap

There was an interesting article in the last issue of MOG about a new Roadster. The article criticises the differential loadingof the new Roadster and then says it was cured by a MMC ECU Remap.

For the non technical among us could someone explan what differential loading is and how it is affected by the ECU. Secondly has anyone heard anything about MMC remapping the Mustang ECU to makeitmore suitable for the Roadster?

Thanks

Ben

... just think of "rev-hang" .... and you have the most significant niggle (imho at least)

The way I used to explain this on training courses was to get delegates to draw a simple graph, 2 dimensional, base line for speed and vertical line for Revs. now to visualise picking the line drawing up at various points to look like a range of hills, that represents 'Load', when they asked what load was think cruising down the motorway on very light throttle at 3,000 RPM, you meet a long hill and the throttle has to be opened to maintain the same revs and speed, this is due to an increase in load or if you like work that the engine has to do in the same time. Not strictly true to think of load as work but close.

Your EC measures many things to calculate load and the map they talk of is a 3 dimensional graph that is programmed to give a specific amount of fuel at a range of speeds and loads, the amount required in the 2 circumstances above are different of course. Manufacturers have to meet strict emission regulations so are restricted in what they can do, the aftermarket often offers a 're-map' to give more performance or economy (sometimes both) that a manufacturer is not allowed to do in production. Claims are often exaggerated but it has to be said that most find improvements either in performance or driveability. Hope that helps?

Very well explained Spanner Juggler, I always wanted to understand this subject and you have done a great job of that,
Thanks

Thanks for the explanation - very clear. Has anyone heard anything about Morgan doing the remap that was mentioned inMog Magazine?

Nice & simple. Thanks Colin.

I think that the Roadster has had 3 different engines in its run so far.

First was the Ford ST220 3.0 litre. When it was installed I am told that some Ford technicians spent several days at Malvern re-mapping the ECU to optimise for the very much lighter weight of the Roadster compared to the Mondeo, Jaguar S type and other more "normal" users of this power plant. As result the mapping was pretty well done and there is little to be gained from a re-map.
The issue with this engine was relatively high emissions of CO2

Second was the Ford Escape engine also 3.0 V6 , this had much lower emissions, but unless someone can correct me , I understand that it was not fully optimised into the Mog compared to the previous set up, and hence a re-map can prove to be more beneficial.

Lastly we have the current Ford Cyclone engine, about which I really do not have any data concerning the ECU, other than it comes from a more "sporty" car (Mustang compared to a Mondeo)
As Colin says, some owners are delighted after a re-map , others more equivocal, a dyno test can show differences of Power and Torque, but it can't measure drivability, and that is perhaps the most important result.

"
Second was the Ford Escape engine also 3.0 V6 , this had much lower emissions, but unless someone can correct me , I understand that it was not fully optimised into the Mog compared to the previous set up, and hence a re-map can prove to be more beneficial.
"

My 2009 Roadster has this engine and the power output is around 204 or 207 bhp depending on which source the info comes from....so significantly lower than the S1 engine. It does respond well to a remap though. Williams used my car to develop their remap and a subsequent run on a dyno showed output at 220.9 bhp and an increase in torque as well. The car feels livelier and strangely enough the fuel consumption has improved slightly as well.

Rather confusingly, there appears to have been a further final incarnation of the 3-litre Ford V6. Mine is a 2011, and is listed on the Certificate of Conformity as 170 KW @6,400 rpm - which translates as approximately 228 BHP. The Ford engine code is listed as CSG630. Does anyone know where this derives from? Is it just a slightly "hotter" Escape motor? It certainly has more than enough go for me - in this chassis, at any rate

http://www.i-m-a.de/en/ford_lbmotor.html

Should be on there