Buying a 2008 135i

[M4c93]

What is up guys. So I'm buying a 08 135i with 65k miles on it. I just have some general questions before I buy it. Does a catless downpipe throw a 2AFF fuel pump code? Also, the guy put 95A polyurethane transmission mounts on top of using oem engine mounts. Will that cause any damage to anything? Due to the mounts, the guy also said that you can hear a noise from the power transfer when shifting. Is that normal? Thank you!

[N55e82Simon]

I don’t have catless downpipes but I believe you get an o2 sensor code. And if you run a tune eg:MHD it will clear the cell or make it not pop up as it will be looking for different values etc. someone else can confirm but i don’t see why a fuel pump code would be thrown for the Downpipe.

As for the mounts they can cause more vibration and noise depending on the hardness. Generally I would say they are fine with most noticeable draw backs being the noise and vibration but better everything else.

[M4c93]

Originally Posted by N55e82Simon

I don’t have catless downpipes but I believe you get an o2 sensor code. And if you run a tune eg:MHD it will clear the cell or make it not pop up as it will be looking for different values etc. someone else can confirm but i don’t see why a fuel pump code would be thrown for the Downpipe.

As for the mounts they can cause more vibration and noise depending on the hardness. Generally I would say they are fine with most noticeable draw backs being the noise and vibration but better everything else.

Thank you for the info and yes he is running a tune on it.