Right now I don't think my local tuner is running anything so I think it will have to be a canned tune for the time being or should I refrain from doing it? I read some encounters that leaves a lot to be desired as far as compatibility. These tunes aren't exactly bullet proof. I'd hate to have my car in the shop being diagnosed while I'm taking public transit to work. Going to get my FMIC, DP and full exhaust done within the week. Should I switch out the factory spark plugs for 'the good stuff' at the very least?