View Single Post
#2: 07-17-2012, 09:00 AM
PeterJMC's Avatar
Title: MD08Spec.B
Rank: Premium Donator
Location: Petey Petes Crazy Garage, MD
Car: '13 Toyota Prius Five, '08 spec.B
Posts: 9,995
iTrader: (56)
Send a private message to PeterJMC Find all posts by PeterJMC Reply With Quote

You are correct, the stock downpipe (DP) has two catalytic converters. There is a third catalytic converter in the uppipe.

You may or may not throw a Check Engine Light (CEL) if you go from the stock setup to the Invidia or any other similar pipe. When I installed my Cobb DP w/high flow cat, I didn't throw a CEL.
'08 spec.B -- Thread Here
'13 Prius Five