FUELAB Pro Series 40-80PSI Max Flow Regulator - 56504-1

FUELAB Pro Series 40-80PSI Max Flow Regulator - 56504-1

Marsoni

M251S

$196.00

Get it in 3 business days with 1 day shipping. Friday, May 29

FUELAB Pro Series 40-80PSI Max Flow Regulator - 56504-1Description 10AN Inlets 10AN Return XL Seat EFI (40 80 PSID) Regulator Features Two 10AN inlet ports and one 10AN return port 1. 75 sized diaphragm with 1 2 return orifice Gasoline, diesel, methanol, and ethanol fuel compatible Billet Aluminum with anodize per military MIL A 8625, Type II Fine thread pitch for precise pressure adjustment Versatile mounting bracket and stainless steel hardware 1 8 NPT gauge port with plug for external pressure gauge 1

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Didn't really believe the hype. Did a little research and watched Project Farm and decided to try. Im not a snake oil guy....but I will say my 2013 common rail TDI is quieter and I get a tad more fuel mileage. Does it pay for itself? Well, it does get better mpg, but I feel the reduction in noise most likely relates to less wear and tear and thats good enough for me. Im only using 1oz per fill up (about 14 gallons) so it lasts a very long time. I get 40mpg and im not light footed.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 2, 2026

Verified Purchase

James Jay

Birmingham, US

★★★★★ 5

It's a spark plug

What i needwd

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 27, 2026

Verified Purchase

Draper, US