I'm sorry for being rude.... I just saw the site and decided to post......
I do not own a 318ti but I have been in the BMW community for awhile...
I am not with Abrahams Motorsport anymore and the link is dead on my site, since I had to remove it (more personal, than business)... I recommend sending questions to Mark D and tell him I sent you... Eitherway his software/chips are far better than Dinan or Jim C...
My name is Michael Abrahams and I own a 86 325e and a 88 M3.. I'm a big fan of the 318ti though... since we share the same rear suspension
Oh and I love the S42 motor...(That counts right, since it's based off the M42/M44 engine)
Cheers guys!