Hi guys I had a 1996 ek4 that I'm taking the engine from and putting into my facelift ej9 . The question I have right now is am I going to have difficulty with the immobilizer in the ej9 with my new ECU and motor etc or do I use the key that the ej9 had to begin with . I'm sorry if this has been covered before but I couldn't find an answer . Thank yous