All, Jojo created a thread like this in the S3 8L section that I used to post in back when I had my S3's, and it's bloody popular! The S1 forum is slightly quieter but I thought it might be interesting to see what work, maintenance or performance, people have done on their S1's! I'll kick things off .... Fitted a Revo Intake today, took about 10 mins. Pleased with the results, pulls hard to the red line now whereas before it felt like it run out of puff the last 750 rpm. Also removed the air box baffle whilst in there, pics below! Purchased it from TSR performance, highly recommend - best price on the net as well!