i have installed the conversion on my old cosworth myself and if you are capable of small work yourself then with stu's very clear instuctions you will have it fitted in a couple of hours....

with it being fitted on my old cosworth that had black siemens injectors, t38, swedish inlet, bd14 inlet cam, big ported head, high comp bottom end, it was very economical when cruising and idle co was at 0.65 at idle and idled perfect as it should do....

the msd chips will only come with closed loop if it stu or the customer has stated to have it in it does not come in msd's chips automatically...

if you have a 4x4 then the wiring is already there in the 3 pin triangle plug, if it is not fitted then all you have to do is run a wire from the lamda sensor to the ecu and stu will supply the pin and instructions on where to fit the pin to the ecu plug, then just run a live and earth to the lamda sensor and thats the wiring done...

over all it is the best conversion you can get for the cosworth for maxium fuel econimy and smoothness while driving the vehicle, once you get the closed loop system you will say why did i not get this conversion sooner as my last cosworth engine was a very big spec my new cosworth is only stage 1 and alot worse on fuel than my big spec one was

so if you are in doubt give stu a call and get yourself one sorted as you wont regret it

well done to stu for making or cosworths economical until we get on boost and thrash the hell out of it