As much as I hate to admit because I love the looks of them, Ive never been too fond of my denali headlights performance. I could never get distance out of them. Ive tried silverstars (the "brightest" OEM wattage available,) new housings, and a morimoto mh1 7.0 retrofit. The only thing that made a big difference was lowering the rear to get rid of the rake, but even then they are still adjusted way higher than DOT/ECE standards. I slightly regret using morimoto mh1's but at the time of the the retrofit I didn't realize they dont do well with distance and the bulb selection blows. A better projector for distance would probably keep me happy though.
Throwing out a couple ideas that could help that I never tried:
- Try HIR bulbs. Fancy bulbs that uses special coatings and shape to become brighter yet share the same wattage and base as OEM headlights. All plug-n-play, no additional things necessary.
- Add a new headlight harness with thicker wiring that uses relays wired directly to the battery to combat voltage drop. *Would highly recommend this upgrade no matter the bulb type you are using. The relay harness for my HID's have been rock solid stable. No dimming, flickering, etc.*
- Try some "off-road" over wattage bulbs. If you go that route, the harness above will be mandatory or you risk melting wires and also getting too high of wattage could melt the housing. 80w would be my max recommendation. OE is 55w. The more wattage the lesser the life span though, but bulbs are pretty cheap.
- A retrofit with a better projector such as the RX350, FXR, D2S, etc.
I cannot advise the use of LED bulbs because they just aren't supposed to perform well as headlights on paper, but plenty of users here have used them and claim they work. Same with HID's without a retrofit.