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just go for the complete bolt on one..saves you some bucks..depends if you want bigger injectors.. there are only a number of sizes injectors that straight fit RB25.. you can go 740cc..im not too sure but i think that's the biggest... if you go top feed..you'd be needing new fuel rails / resistor packs and all.

anyways...practically,..just go bolt on.

Injectors is were alot of people make mistake's.

Top feed & bling bling rail injector set up's are just going to be more trouble then their worth. As if their not high impedence their not going to work.

Nismo 740's or 550cc's are direct replacements into the standard fuel rail, no need to modify anything at all, the only thing i would recomend changing is the rubber o-rings that the injector sits on. - Cheap as under $5

And if you are going to replace your injectors to a larger size you cannot use them with the stock ecu, you will have to go aftermarket as your car will run like, sh!t and very very rich.

Low impedence injectors are possible to use on a RB25 but you will need resistor pack to change the impedence to 12 - 16ohm's. - A waste of time if you ask me when the direct replacements will do the same job, hassell free!

2 eg.

RB25 with Nismo direct replacement injectors, took the afternoon to fit them and get working, car was drivable no drama's except for the one o-ring that was not sealing so had to be replaced.

SR20 with denso 780cc injectors with custom fuel rail, took 4 days to get it working and running, as we had dramas with collar's and the injectors not sealing in the rail and a number of other things, the car runs fine now, the price turned out to be more expensive then the RB25 direct replacements.

;)

Cam

Injectors is were alot of people make mistake's.

Top feed & bling bling rail injector set up's are just going to be more trouble then their worth. As if their not high impedence their not going to work.

Nismo 740's or 550cc's are direct replacements into the standard fuel rail, no need to modify anything at all, the only thing i would recomend changing is the rubber o-rings that the injector sits on. - Cheap as under $5

And if you are going to replace your injectors to a larger size you cannot use them with the stock ecu, you will have to go aftermarket as your car will run like, sh!t and very very rich.

Low impedence injectors are possible to use on a RB25 but you will need resistor pack to change the impedence to 12 - 16ohm's. - A waste of time if you ask me when the direct replacements will do the same job, hassell free!

2 eg.

RB25 with Nismo direct replacement injectors, took the afternoon to fit them and get working, car was drivable no drama's except for the one o-ring that was not sealing so had to be replaced.

SR20 with denso 780cc injectors with custom fuel rail, took 4 days to get it working and running, as we had dramas with collar's and the injectors not sealing in the rail and a number of other things, the car runs fine now, the price turned out to be more expensive then the RB25 direct replacements.

;)

Cam

thanks mate i have the ecu so no worries there , i think im just going to buy the bolt in injectors , seems like the smartest choice and the easiest

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