Fuel Pressure Regulator Mod

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GeoKez

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Joined
Nov 3, 2012
Messages
1,359
Location
Perth
Hey all,

I'm doing some dodgy stuff on the shitbox rally car (4g15 Mirage) and want to get more fuel rail pressure. The plan is to drill and tap a hole on the vacuum side of the fpr and use a fine thread bolt to put added pressure on the diaphragm. Will this work? I'm not sure if there is different internals in an NA fpr V's a rising rate fpr used on turbo motors (of which I've used this mod on successfully).

Anyone know?

Thanks.
 
^^ Have seen the motorbike guys do that, on a VFR forum. Same net result I guess, adding high spring pressure behind the diaphragm. Got a few laying around, no harm in trying.
 
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