Why don't you contact Tofu? I know he was planing on doing tunes and stuff.

 

Make sure you are using premium fuel, from a good source.

 

i use 93 from BP everytime... maybe i should try mobil?

 

two very important things to understand here...

1. octane doesnt change ltft/stft, you should only be worried about octane as a last ditch effort to lower knock retard or to run more timing.

2. when anyone talks about your ltft's being between 0 and -4, they mean an average over a given drive/run. you will always see some -+, whats important is that the average is correct.
its impossible to get this data from your scan gauge, you need a true datalogger or hp tuners.