Hey does any-one have any great suggestions for performance spark-plugs and custom wire set(performance),I have a 2004 Infiniti G35 sedan,and I'm just starting to up-grade.Also I need some suggestions on short-ram air intake,does it really ADD any noticeatable horse-power!!!????,I just put in a K&N air filter only,thanks Darrin

Look at the Pulstar Pulse Plugs in the review section. Not cheap, but some have claimed they increase power.

Our engines dont have plug wires like some cars.Ours is a coil over plug setup and just stick with ngk plugs and dont waist your money on the pulstar plugs.
Short ram and just about any cold air intake is a waist on these motors just use a good drop in filter and call it a day.But if you would like a little more agressive sound get a z-tube and jwt pop charger.