Thread
:
buzz sound
View Single Post
08-14-2009, 09:22 AM
#
3
yimmy149
Registered User
Join Date: Apr 2009
Location: Bothell, WA
Posts: 279
It's called a "secondary air injection pump" and it's purpose is to help warm up the catalytic converter faster by providing extra oxygen.
__________________
'01 Boxster S, 51k miles
'05 Mazda 6 Grand Touring Wagon
yimmy149
View Public Profile
Find More Posts by yimmy149