I bought a 90 TT and it was to have a JWT ECU. I also have a 91 that is supposed to be stock. I pulled both ECU's and they both look alike. The one that should be JWT has a red sticker on what I believe to be the JWT Chip. Nothing has "JWT" on it anywhere. The ECU I thought was stock also has a chip that looks identical to the 90's. Is is possible that both are converted? Is it possible neither one is? This is the pic of the 90 JWT??? Any help would be appreciated. Is there anyway I can tell for sure?>