i have just been offered a chipped s2 rs turbo ecu for our lasses car but i can remember they have different symbols on them so do i need exactly the same one or will it plug and play.....

both cars are s2 rs turbo's

and also how can i check his is a s2 and not a s1 ecu????

Cheers john....

 

The ECU (silver box) should have a sticker with identifying features:

blue red blue is S1
the hearts etc is 90 spec S2
blue red black is 88 spec S2
blue red white is 86 spec S2

 

cheers so does anyone know if all the s2 ecu's will just plug and play or will it have to be the same markings??????

 

yes it they will physically fit.

No not all will work.

ones with knock sensor function will only work on cars with a knock sensor, ones without knock sensor function will work on any engine afaik!

 

mmmmmmmmm so realy i need to get it and try it..

 

Easiest option is to go for:

Blue-Red-Blue = Series one cars (B, C, D)
Blue-Red-White = Early series two cars, with no knock sensor, mainly the first D plates

or if you have a knock sensor on your car and want to keep its function or can get these ECU's easier (remember they only work with knock senor equipped cars)

Blue-Red-Black = Series 2 cars with a knock sensor (E, F, G)
Hearts & Diamonds = 90 spec cars, with a knock sensor (G, H)

 

hot can i tell if her engine has got a knock sensor - were about is it...

car'nt go off year as it is a cabbie with a rs turbo convertion.....think ill have to have a look on her ecu..

 

Hi,

The knock sensor is on the right top side END of the inlet plenum(manifold)
as you look into the engine bay from memory it is a green sensor.
if you need any std ecu's i have some.


Dave R.

 

or is that what it is......yip it got one of them...