25-300BK Black High Volume Adjustable Fuel Pressure Regulator

Just as described. Awesome part

Tried many other brands and got leaks, improperly seated diaphragms and some leaking from vacuum side. This one was great. Installed and fired right up.

#1 fittings on the return line leaking apon initial install, needed to RTV it and over tighten it to get it to stop leaking #2 within 3 months of initial install the bowl on the diaphragm started leaking fuel, needed to RTV it to get it to stop leaking #3 within 3 months, 2 weeks of initial install the diaphragm popped inside, causing motor to stall & flood with gas, hydro-locking 2 cylinders and contaminating oil. Avoid this model if possible. big waste of my time. 0 stars

Works well easy install

This AEM fuel pressure regulator worked perfectly for my Integra with a B20b swap. I tried the cheaper alternative first from DNA-motoring. The adjustments were very touchy. And the diaphragm failed after only a couple months of regular driving. Leaving me stranded on the side of the road with an engine flooded with gasoline. But this fuel pressure regulator is way better. Better build quality. Better fine tune adjustment. And it has parts that can be replaced if they fail. Unlike the cheaper knock-off products. Bottom line : if you need an adjustable fuel pressure regulator for your Honda/Acura, save yourself the headache of buying cheaper alternatives and learning the hard way. This product is worth every penny. Even though it seems kinda pricey.

It’s good

I like the product and it’s on an AEM fuel rail for a 1991 accord wagon.

Got this to go on a 1999 acura integra with a b series vtec engine. The fittings were for the wrong size, and were larger than factory hose. Specifically, the fuel return hose would not properly fit on this, and would stretch and rip, causing leaks... I was in the middle of working on getting this and other minor issues fixed when the car ended up getting stolen overnight. Obviously, they didn't know the issues with this, and after a few days joy riding this, it appears the return must have ruptured, as the car was found by fire department abandoned side of road in a neighborhood on fire engine bay. No parts stolen from the bay, no interior parts stolen, not even the aftermarket radio, and only one of the gsr blades was swapped out (believe they likely got a flat, lol). That's what leads me to believe it wasn't a chop shop resell job, but more of a Joy rider or just stolen to have a vehicle type scenario, and the result of the fire was probably the return just spewing fuel all over while they were joy riding. Again, you'll likely have to replace/upgrade hose sizes with this for a 90s b series honda application, otherwise risk engine fire

This FPR is trash. I’m on my third one and they’ve all started to leak within a few weeks. I’d rather not turn my car into a rolling ball of flames AEM. I’m very disappointed in this product. I expect better.