1994-2002 [Subscribe to Daily Digest] |
This is probably the bypass valve. This gets much worse if you increase the boost pressures. K&N filters and modified air boxes allow the sound to get out too. Solution: a higher spec plastic unit or a piston type bypass valve for $150 and up.
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.