Hi,

My car currently with APR downpipe with Stage 2 ECU, and I would like to flash it back to stock for engine oil consumption warranty repair, but I do not keep the stock item. So I would like to know which stock part I need to buy.

I know one of that is catalytic converter, but another one I am not sure.
Here is the eBay link:
https://www.ebay.com/itm/2009-2010-2...f03c%7Ciid%3A1

https://www.ebay.com/itm/2009-2012-A...Va9jZ4&vxp=mtr

Do you think this is the right one to buy?