Great product..

Fuel system is much happier. Quieter injectors, smoother power curve, 1mg increase. I installed gold and have 175s, curious about black though.

I only wish this kit was available with the special beveled o ring that seals the poppet.

Overall very happy

I am running the recommended spring for my stock engine. It definitely quiet it down and smoothed out my idle I haven't hooked up a gauge to see what my fuel pressure is. I would recommend it

The install is easy I ran the black springs in the truck with less mods. And ran the
Mid spring in my other. The throttle response all of them was better and a little more crisp. I will be buying a third set. Worth the small price!

I installed the gold spring on my 02 7.3l and wow. It has a much quieter idle as well when in high rpms (above 2000rpm) and throttle response is amazing! I went out and tested it. Floored it at a light and it took off quick! Much better than before.

Great kit with quality parts. So nice to have a choice of pressure.

Noticeable difference in throttle response crisp and clean !

Used gold spring. Quieter injectors and smoother idle.

At 225k my fuel pressure was getting weak and this fixed my issue I recommend this product