EVIL ENERGY Fuel Pressure Regulator 6AN EFI Bypass Return Adjustable (30-70PSI)

Decent kit. But, DO NOT USE the included hoses on an portion of your fuel system. While they look nice, they are crap rubber without nylon reinforced walls. The rubber will TEAR easily and blow a line and leak. Use REAL fuel line with nylon reinforcements, not this pretty SS braided crap rubber hose in the kit. Other wise, the regulator works.

Does what it is designed for. I used on holley 4150 sniper. After the fuel pump went out, I replaced with a walbro. Pump worked well, but pressure was wqy high. I pulled out flimsy internal regulator and replaced with this. Dialed in 60 psi and rode out.

Item well made and description was bang on

Works great with my Atomic efi and much cheaper than the one MSD sells! My only compaint is that the fuel pressure gauge is junk. The needle bounces between 20psi and 60psi. I just used a known good used gauge I had and everything is great now.

This unit is a suprisingly good value, I give this thing high marks for the 70ish bucks it cost me, however... Let talk about what this is and isn't. This IS a fairly well engineered (copy?) AFPR, its holds it's setpoint well, it flows a good amount of fuel and it works well in boost. For the average tuner this FPR will at least eliminate a rather annoying variable (stock FPRs). This isn't a high dollar unit, I dont know if I would trust it to regulate over 500hp or 1 bar of boost but your mileage may vary. It is very likely that it will NOT survive exposure to alcohol, don't even bother trying it, buy a high dollar proven alcohol rated AFPR if that is what you are up to. I installed this on the return side of a Ford 300 I6 Turbo with Ford fuel rail to AN adapter fittings, I simply gutted the stock regulator and welded it back together to act as a passthrough to this AFPR. I set the reg to 42 PSI, hooked it up to a vac/boost ref port and sent it. ZERO variation in the tune, VE numbers look way better, proper flow and pressure are now being maintained on both sides of the injector under boost. No leaks, overall happy. Things to note: TAKE IT APART, make sure there are no shavings, rolled orings or a bad seals, don't be a noob and file a bad review because you didn't do your job. this goes for any Chinese aftermarket car part (BOV, WG, etc.). Double check your work, torque all of the fasteners to a standard specification. Be gentile with the provided fittings, they are made from low grade Chinesium, they do work fine. The supplied hose is meh but I used it anyway and it's fine. Be smart, if you dont know what you are doing, talk with someone who does, dont just install this on your car or truck because you think it's cool. If you dont have a reason to install an AFPR then dont, the stock one is going to work better in your application. NO ETHANOL! You didnt read the whole review, STOP!

Looks good easy to hook up just won’t adjust pressure got a bad one !

good product. had some leakage but I changed some orings and everything was all good

This fuel pressure regulator was the answer to the fuel pressure that lacked while driving. The vacuum sensitive portion made the difference. Static fuel pressure does not work well for drivability.