I can get you a chip for theT25/T28 cosworth off the shelf. There are a few different ones available. I have had 2 different ones, and now I have got one that is perfect. Send private message for price and details. You can fit it yourself.
( Bonjour. JE PEUT PE L'AVOIR UNE CHIP POUR TA VOITURE. JE'N AI MAINTENANT. ENVOYEZ-NOI UN MESSAGE PRIVET).