02oettingerA4

it seems that with my 4 coil failures my cat converter need to be replaced

A4Dallas

uhh, i don't see the correlation there.......

Jimax

when an ignition coil goes, you tend to run too rich and that ends up hurting the cats. It sounds like 02oettingerA4 probably drove a little too much on failed ignition coils. You can drive the car, but it can't be excessive nor can it be aggressive.

At any rate, the cat should be covered under warranty.

Initial DTM

How long did u drive on a messed up coil? How did u know ur cat needed to go?

02oettingerA4

couple miles ....umm check engine light and dealer said it was shot

02oettingerA4

plus once it was a double failure...i didnt drive but a couple miles ohhh weel its free so i dont care...just curious if i had an aftermarket exaust will i have ruined that cat too ??

Jimax

you would have ruined that cat as well.

02oettingerA4

good thing i have good coils now (hopefully)

Jimax

Sounds like mod time now

B_Chicago

If the stock one fails, you should be able to get a waiver to legally replace it with an aftermarket high-flow one.