View Single Post
911nut 911nut is offline
Metal Guru
 
911nut's Avatar
 
Join Date: May 2001
Location: Michigan
Posts: 2,511
Garage
Quote:
Originally Posted by lucittm View Post
Actually, the air injection system added air to the unburned exhaust gases in the six exhaust ports and the cat when the engine was cold to reduce emissions.
After a set amount of time (one minute I think) the air feed gets switched to the cat.
There's an small HP loss from turning the air pump, 15 lb of dead weight and the issue I had with a rotten spider.
__________________
Paul B.
'91 964 Turbo
Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, - 210 lb
Old 10-01-2008, 07:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)