Def go for gears for your low end power..unless you're wanting to jack with your motor just so you can put more mods in your sig...

But yea, any intake mods are only gonna benefit you on the upper rpm range when the motor is wound up....fuel flow is not an issue at low idle. I've been building rock rigs and offroad trucks for about 8 years now....gears are the most overlooked part of any performance build.