[Sherby78]

Hello all, Does anyone know if it’s normal to get a mixture control lean code with a catless down pipe. It is MHD STAGE 2 + tuned with FBO. Previous owner says it’s the catless down pipe. I’m not so sure.

[thejeremyman9]

Originally Posted by Sherby78

Hello all, Does anyone know if it’s normal to get a mixture control lean code with a catless down pipe. It is MHD STAGE 2 + tuned with FBO. Previous owner says it’s the catless down pipe. I’m not so sure.

There should be no doubt at all if its catless. The exhaust will be louder and rapsy and most obviously it will have a significant fume smell.

But no, you should not get a lean code. Collect a datalog and post up all the error codes MHD shows.

[Honeybadger23]

Originally Posted by Sherby78

Hello all, Does anyone know if it’s normal to get a mixture control lean code with a catless down pipe. It is MHD STAGE 2 + tuned with FBO. Previous owner says it’s the catless down pipe. I’m not so sure.

I'm having the same issue...

Did you get it fixed?.
Was it your downpipe?