Is the Nismo fuel pressure regulator any benefit to a car with significant NA mods, including a reflashed ECU? I have numerous NA mods (intake, plenum, headers, cats, exhaust, ECU reflash, grounding kit, clutch and flywheel) but my car has never been dyno tuned. Can some tuning be done by a Nissan dealer using the fuel pressure regulator? Can A/F ratios be adjusted this way? Is it worth having for NA use?

 

Bump for a good question

I doubt that the Dealer would install / tune / know how to adjust the regulator to get a good A?F mixture but maybe a good tuning shop could use this to tune.