HID Projector Retrofit Kit Components Guide
When you order a complete HID bi-xenon projector retrofit kit, that box arrives packed with more parts than a lot of first-time builders expect. We shot this walkthrough on the bench so we could physically pull every piece out and explain exactly what it does before you ever open your headlights. Understanding these HID projector […]
HID Projector Retrofit: Mounting & Alignment Tips
Retrofitting projectors into a stock housing is one of the most rewarding lighting upgrades you can tackle in your own garage, but it lives or dies by one thing: alignment. We have done enough of these builds to know that if you skip the prep work, you will chase a crooked cutoff and uneven output […]
Morimoto Elite HID System: Range Rover Evoque Install Guide
Upgrading the halogen projector headlights on a modern SUV is one of the most satisfying lighting jobs we do here at the shop, and today we tackled a brand new Range Rover Evoque with the Morimoto Elite HID System. This kit takes a factory halogen projector and gives it a clean, pure white output without […]
370Z Headlight Lens Replacement + Halo Install Guide
Upgrading both the projector lens and HID bulb in your Nissan 370Z produces dramatically sharper and brighter output compared to the decade-old stock setup. If your 370Z headlights look hazy, yellowed, or dim, a 370Z headlight lens replacement is one of the most effective upgrades you can do at home. In this guide, we walk […]
LED Halos and Strips: The Complete Guide to Switchback and RGB
If you want to take your custom headlight build to the next level, LED halos and strips are the way to do it. Whether you are after a clean switchback daytime running light or a full color-changing RGB setup, the options from Profile Performance are in a class of their own. Here at The […]
Best Bi-LED Projectors for Retrofitting: Head-to-Head Comparison
When it comes to upgrading your headlights, choosing the right bi-LED projector for retrofitting can feel overwhelming. The market has exploded with options over the past few years, and not all of them deliver on their promises. We got our hands on every major LED projector available, mounted them side by side on a beam […]
What’s Better: HID or LED D2S Bulbs? (2026 Comparison Guide)
When comparing HID vs LED D2S bulbs, the answer is not as straightforward as most people think. If your vehicle uses D2S HID headlights, you have probably asked yourself whether it is worth upgrading to LED replacements. On paper, LED sounds like the obvious winner. Newer technology, higher efficiency, and bold claims about brightness. But […]
Best LED Headlight Bulbs: Performance, Optics, and Real-World Results (2026 Guide)
LED headlight bulbs have become one of the most common upgrades in modern automotive lighting. They promise increased brightness, improved efficiency, and a cleaner, whiter light output compared to traditional halogen systems. However, upgrading to LED is not as simple as swapping one bulb for another. From an engineering standpoint, LED headlight retrofits introduce a […]
2018+ Ford F-150 Morimoto XB LED Headlights: Complete Install Guide and Review
If you own a 2018, 2019, or 2020 Ford F-150, you already know the stock headlights leave something to be desired. Fortunately, upgrading to the Morimoto XB LED headlights is one of the best visual and functional upgrades you can make. In fact, the entire installation is plug and play, meaning no cutting or splicing […]
Why LED Headlight Bulbs Don’t Work in Some Cars: Optical Design, Geometry, and System Limitations
LED headlight bulbs are widely marketed as a direct upgrade for halogen and HID systems. However, there are reasons why LED headlight bulbs don’t work in some cars, even if they often match the physical dimensions required for installation; they do not always integrate properly with the optical design of the headlight. This mismatch between […]