Dave_M

Hi all

I'm planning on starting soon looking for an Escort cosworth as my next project car - after something which I can do the spannering on myself to bring it up to circa 350bhp.

I've been searching on here to understand whether I have to start with a large turbo car - which a lot of people are saying I do - and that there is (almost?) options for taking a small turbo car over 300bhp due to the EECIV ECU.

Is there any reason why a ST car can't be taken to the same levels as a BT car by ditching the EECIV and replacing it with an emerald ECU - I'm currently running one of these in my Caterham and know it has the functionality - and I'm happy making up wiring looms and the like. This would allow me to keep the wasted spark ignition rather than retrograding to the dizzy setup of the earlier Weber management - which seems to be one route suggested on here.

If this is possible, what if any are the downsides? Will it make it more difficult to sell on in the future?

Many thanks

Dave

tabetha

In my view running the K3 myself, it would be more of a selling point, to anyone who knows the advantages of a easily mapped system, and the difference maping individually makes to a car.
The emerald ecu will be perfect, the limiting factor is the turbo, it is just simply too small, you could just stick the ecu connector on your loom to save making one up if you wanted, or proper motorsport spec looms are not a bad price, from the person I use.
As you probably kn ow the emerald will run pretty much any ignition inc points!!
tabetha

Dave_M

tabetha

Thanks for reply. Is there are reason so few people seem to run the emerald - or to consider going aftermarket for the ECU on a ST?


From what I've read, I'd need to swap the turbo on a LT as well to reach 350bhp? So from what I've worked out, to upgrade a ST to that level I'd need:

• 4x4 exhaust manifold
• emerald + loom (or as you say just swap the ecu plug)
• injectors
• turbo

The beauty of the emerald is it's cheap to map / remap - which largely offsets the initial purchase of the ecu. Compared to a LT car, the only differences in achieving this power level are you wouldn't need the exhaust manifold and you'd swap the chip (£500??) compared to needing the emerald + loom plug + mapping (about £1k).

Have I got this right - or am I missing the blindingly obvious! I'm completely new to cossies, so really feeling my way atm. What about the immobiliser - do the ST escorts have the chip in the key - is this going to cause a problem?

Dave

tabetha

There are shed loads of peeps with cossies running emerald, plus many many other cars.
Currently booking slots are not till end of september.
The LT escos with T34 will easily do 350 all day long without sweating, even on a .48 turbine.
A lot of the people running them in one make series don't go on the net forums much, it's a good ecu, I like it because it's designed in house, built in house, mapped in house, or at one of his approved people that he supplies.
It is exceptionally adaptable, and used on some very oddball stuff, who can forget charlies 27,000cc V12 meteor/spitfire engined rover sd1!!, running this ecu with 24 injectors.
Not sure on the exhaust manifold but T34 is defo ok, as you say it can use all your sensors, so this saves hassle, I run a universal sensor, bit if easy adaption to fit the 8mm D shaft throttle spindle 2 mins align throttle pot, job done, no remap no nothing needed, and £25 easily available new!!
tabetha
pm sent

robbieg

iTrader: (9)

....also as the Emerald runs more than one map no need to buy another ecu just move from one car to another.

Chip

iTrader: (3)

I think a cheap and cheerful ECU like an emerald will devalue the car personally, and make it more difficult to sell when the time comes, but yes it will work fine.

tabetha

see just what I mean dave!!
tabetha