Aftermarket Fuel Rail

[Kaido_RR]

Hi,

After search through 34pages, I still was answerless so here I go.

I’m about to upgrade to nismo 740cc injectors, and I was wondering if there is any point to upgrade my fuel rail from a stock to Greddy.

Are there any advantages to having an aftermarket fuel rail? It seems to be a cheap upgrade only $300.

I have an S1 R33 GTST RB25DET

Cheers Michael

p.s i believe the Greddy fuel-rail doesn't change the injectors from side-feed to top-mount.

[Kaido_RR]

anyone....?

[R31Nismoid]

stock rail is fine.

i used it no problem, no "need" to upgrade other than ricer factor

[Kaido_RR]

thank R31Nismoid

[ISL33P]

my 2 cents and a bit, which has been tested by flow testing a fuel rail, says that there is a lack of (air) pressure towards the return end of the rail which will cause a leaner air/fuel mixtures towards the return end cylinders.

the best way to solve this is get a twin feed fuel rail with a single return which more evenly distributes fuel to all cylinders. these can be found (cough cough, see sig) a lot cheaper than those you have mentioed which still retain a single return line (poor flow). very ricer like r31nismoid, does nothing but add looks.

once you have the rail, all you need is a brass y-piece and some fuel line and they bolt straght into the standard position. one thing to make sure is to keep the length of each supply line the same length from the y-peice to the rail as the length of fuel line also dictates amount of pressure available to each end. this i haven't tested but was told to me by at least a couple of pro-dragsters that have chased lean mixtures back to something so simple like fuel hose length.