Rb25 Injectors Upgrade

[Addicted2BoostR34]

ok guys iv had tryed lookn but

i have a rb25 neo 6 would it be worth getting some RB26 gtr injectors to replace the std ones i have or waste of time ..???

any help on this would be nice is there much flow diff between the 2 ?

or bettor off just getting after market ones

my mods are ..

fmic / hks-gtrs turbo. split fire coil packs . gtr fuel pump .. and next week a vipec v44 ecu system

if i was to go after market wats a good size 700 cc? i have no idear about squirts

cheers

[Hanaldo]

ok guys iv had tryed lookn but

i have a rb25 neo 6 would it be worth getting some RB26 gtr injectors to replace the std ones i have or waste of time ..???

any help on this would be nice is there much flow diff between the 2 ?

or bettor off just getting after market ones

my mods are ..

fmic / hks-gtrs turbo. split fire coil packs . gtr fuel pump .. and next week a vipec v44 ecu system

if i was to go after market wats a good size 700 cc? i have no idear about squirts

cheers

RB26 injectors won't fit the 25 Neo if you're using the standard plenum and rail. There's not a lot of straight-swap injectors on the market for Neo's unfortunately. I ended up going with Power Enterprise because they were one of the only direct fits I could find. Looking back, I should have gone bigger than the 650's. Though something around that size should be plenty big enough for your application unless you're planning on going E85 at any stage.

[SargeRX8]

Wouldn't Nismo make some drop in injectors for the Neo motor? If so I'm sure you can find a set of 555cc Nismo's which will do nicely. The Standard is what, 370cc, the GTR is 440cc(I think). If you're maxing your injectors and you don't really plan to upgrade in the future then 555cc injectors should be sweet. I got Nismo 740cc injectors and with a SS2 hypergear turbo, I rarely see more than 50% duty cycle on them even on full boot.

[R31Nismoid]

Wouldn't Nismo make some drop in injectors for the Neo motor?

No they dont.

[rondofj]

Ask simon s14 on here- he got siemens deka 700cc or something from ebay usa for real cheap- u need top feed high impedence injectors- i think u will have to add a coupla washers to lift up ur fuel rail a bit as the injectors are long

[rondofj]

Ask simon s14 on here- he got siemens deka 700cc or something from ebay usa for real cheap- u need top feed high impedence injectors- i think u will have to add a coupla washers to lift up ur fuel rail a bit as the injectors are long

[Hanaldo]

Heard too many horror stories about the siemens deka's to recommend them to anyone... My tuner told me to stay away from them, he refused o even install them in my car if I got them. They also aren't straight plug-n-play, you need to get new plugs. Not too much drama if you know what you're doing.

[scotty nm35]

I ran Deka's for a year, they were fine. I only upgraded to Bosch 1000's because they were maxed. Either can be installed in the Neo fuel rail with an adapter, plug adapters or new plugs will be required also and rail spacing may have to be modified.

[wolverine]

No they dont.

Whaaat? You must be working too many hours Ash?

Nismo do make drop in injectors for neo's I have 480's in the stagea.

[Addicted2BoostR34]

i do want to upgarde later on . if i was to get the 740 size that would do for all the mods i going to do and if a was to play with 85 they would work ?

who had the injectors swap thread on here with spaceing them out and wat not

[luvpsi]

nah if you was to use e85 you pretty much need the min of 1000cc with e85 you almost double the consumption.

[luvpsi]

nah if you was to use e85 you pretty much need the min of 1000cc with e85 you almost double the consumption.

[Legionnaire]

Siemens Deka IV injectors, 650cc or 860cc long ones, wide spray 650cc's have been working with Nistune on a neo motor with spaced out factory fuel rail for more than 1 year, no problems encountered.

480cc Nismo ones, purple - obviously work flawlessly and are drop-in.

Deatschwerks (or whatever is their name) make highflows for neo/VQ35 engines, drop-in replacement, no first hand experience.

InjectorDynamics make Bosch highflows in 725, 1000, 1600, 2000 cubic cm sizes - haven't tried these, but very keen to. Apparently they are nearly drop-in also.

Plenty of possibilities, just search.

[R31Nismoid]

Whaaat? You must be working too many hours Ash?

Nismo do make drop in injectors for neo's I have 480's in the stagea.

BAH! Ye i know.

I meant to his 550cc+ like he was talking. Posted from my phone/chopped a bit too much of it out

[benl1981]

There are some 3/4 length drop in direct fit injectors that only require connector changes.

There was some reference on the forums somewhere. From memory about $450 + connectors.

If you can't find let me know and I will search. I think they are bosch or similar.

The XR6Turbos are full length but you can get them in the 3/4 length top feed also from what I have read

[Hanaldo]

There are some 3/4 length drop in direct fit injectors that only require connector changes.

There was some reference on the forums somewhere. From memory about $450 + connectors.

If you can't find let me know and I will search. I think they are bosch or similar.

Sounds like the Siemens Deka's.

[benl1981]

Bosch EV14 52lb

· Single buy set of 6 $450

· Group buy 5+ sets of 6 - $415

· Single buy set of 4 - $305

· Group buy 5+ sets of 4 - $280

Bosch I think.. 3/4 length

http://www.skylinesaustralia.com/forums/topic/352869-group-buy-siemensbosch-injectors/

These are a 3/4 length injector, 14mm Oring, top feed, high impedance, UScar style plug.

Height adapters are extra – used to convert from ¾ length to full length

Wiring adapters are extra – used to convert from UScar plug on injector to Bosch EV1 style

Billet height adapter with locking clips are $8ea, Wiring plug adapters $7ea. R34 specific wiring plug adapters are $11ea

11mm adapter to suit RB20 and 26 $8ea, 10.5mm adapter to suit standard fuel rail $16ea