TECH TIPS Import Scene Knowledge Base     Menu 1. Tech Tips from the experts 2. Product and Install Guides 3. Manufacturer Product Manuals   2. Product and Install Guides   Product Guides High Intensity Discharge (H.I.D) How does real HID work and what are all the considerations when thinking about doing a HID retrofit on your vehicle. High Intensity Lighting (H.I.L) What's the difference between factory Halogen bulbs and aftermarket XENON bulbs.  (See also our HID feature above) Turbo Timers How Turbos work and why Turbo Timers are a critical item to have for any turbo charged vehicle. Light Emitting Diodes (LED's) Understand the difference between LED technology and traditional Halogen filament style bulbs. The low down on Grounding Kits An often overlooked area of performance upgrades. Understand  what a difference a professional grounding kit can make to your electrical system and performance. Gauges - Not just for show Why do you need aftermarket gauges, what types are available and what ones should you consider for your application. Dash Kits Want to dramatically improve the interior of your vehicle? Check out how a dash kit can transform your ride. Air Filters What's the impact of having a dirty air filter and what are the options for replacement/cleaning. Air Fuel Controllers How does an Air Fuel Controller work and why should you consider one. We take a close up look at the Apexi SAFC II. Installation Guides   Levoc Shifter Detailed instructions with photos about how to install the popular Levoc Shifter. This guide shows installation for a Toyota Soarer but could be useful for installations on other Toyota's and Nissan auto vehicles.