We have a new home on Github! Go right ahead to bookmark and contribute... Or stay here if you like 2000's websites.

The throttle body inlet pipe porting on the 1994-98 Saab 900 and 1999 9-3. The pipe is located on top of the engine, secured by two screws with a 10 mm hex head.


Click to see the next picture
21.05.2006: Original
The cast aluminium throttle body inlet pipe has a rather poorly designed entry port at the point where it mates to the delivery pipe from the intercooler. The ridge is rough and uneven with its thickness ranging from 3 to 6 mm, which constitutes a noticeable restriction to the air flow.


Click to see the next picture
21.05.2006: Ported
Porting the pipe is a well-known and simple modification. The goal is to smooth the ridge, thin down and polish the walls around the entry port, providing a better transition from the delivery pipe. You can use a Dremel or more traditional tools like a round file and sandpaper.

  [return to index]



Copyright © 2000-2013 Dmitry Platonoff
All rights reserved.