Here are the LED's that I and many others have switched to recently.
https://www.clubfrontier.org/forums/f8/gotta-admit-i-wrong-about-led-headlamp-bubs-351579/
Also, this axle vent mod needs to be done.
https://www.clubfrontier.org/forums...a-build-thread-218506/index4.html#post2712986
NEXT, the exhaust needs to be done.
Here's a very important (performance) MOD that you should do on your truck.
Pic #3 shows the merge of the 2 flattened out left & right inlet pipes, stuffed into the main inlet pipe that goes to the muffler.
The factory has done this same poor exhaust design on the Frontier since 2005..!
My 2006 Frontier was like this and now, my 2018.
Get under your truck & you'll see what I'm referring to.
You need to have a muffler shop cut out and replace that horrible 'Y-Pipe' that is just ahead of the muffler,
and install a temporary or permanent one like this one below.
I just did this to my 2018 PRO4X, (cost me $50.00), and it REALLY helped with performance & throttle response.
This is a temporary fix for now. I'll be doing a full Dual 'Siamese' exhaust later this year.
Pics 1,2 & 3 are the section of the factory Nissan 'Y', that I had cut out, and pics 4 & 5 are of what I had installed.