Hi guys, I'm interested in doing a few mods to my BA MKII XR6, that won't negatively effect my fuel efficiency! So far I've done the Typhoon CAI. I noticed more low end power, which was great! I know extractors chew through more fuel... so I'm kinda steering away from getting those installed. I've been told that custom tuning my car will give it more power and better fuel efficiency. Is this correct? Or just people talking sh*t? Are there any other mods that can I do? Cheers, Brett