I'm sorry, Phil. While I'm fairly familiar with both the S1 and SQ300, I screwed up once again and assumed that Audi named the sq300 the s1 as well. Thanks for correcting me. Steve '84 5ksT 1.6-2.0 bar Disclaimer:"Any information contained herein is based purely on my own personal experience and may not necessarily reflect yours. Use caution as your results may vary from mine."