P-Tronic box-unit on Alfa Romeo 156 JTD

I bought a second hand car with a P-Tronic in it. At first I was a bit frightened about driving with it, and I took it out after a few weeks. But when it had been taken off, my car (An Alfa Romeo 156 JTD) had much less punch and used more fuel! I had it put back, and I've never had any problems with it. 


Rudy D., Brussels.