After many years to patch over patch the pipes, finally I decided to replace for new ones, Ironicly my X1/9 just have overheat problems when I bought just replace the waterpump and sent to service the radiator, after that I never again have overheating problems with my X' but leaks were killing me!

I went to many muffler shops around my neighborhood and nobody wants to do the job, I didn't have space, tools and knowledge to make on stainless steel my new pipes, so I decided to replace with COPPER PIPES and weld with a torch. I make a trech to remove the old pipes on the floor I copied the shape with copper pipe 1 1/4 and conexions 1 1/4 @ 45 degrees, then attach on the car and covered with steel sheet and apcoseal coated.

I made this project around 4 years since then no problems at all, no overheating, leaks or anything else.