Denso High impedance 550cc injectors on RB26 - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Ian C · 22nd July 2008, 01:52 PM

Right chaps,
looks like i may have been sold a dud....

Bought a set of Denso 550 cc injectors (195500-2020) on the understanding they run on the RB26DETT - turns out (from a quick search on here) they are for the RB25DET (non-neo)
Impedance (looking at the web) looks like 13.7, which i think is way over the spec of the direct replacement parts!

So, can I run them on my car at all, or are they going up for sale?

Can I use the RB25 injector resistor?
Anything I can change on my Apexi power FC PRO to make them run?

Thanks,
Ian

fletch.rb30 · 22nd July 2008, 05:16 PM

They will work but you have to bypass the factory injector resistors, I dont have a pic on me, maybe someone here does.
The factory gtr injectors are low impedance, but there is a resistor box in parallel with each injector to bring the impedance up. If you remove it and just hook up the injectors directly you should be fine.

Im not 100% sure on this, but i think you can just cut the resistor box off about 30mm long, strip all the wires and put a crimp lug on them and this will do the trick.

Ian C · 22nd July 2008, 06:32 PM

If i have to butcher the loom then i don't fancy it - may as well just do it properly...So these are going up for sale!
thanks for the help!
Ian

22nd July 2008, 01:52 PM	#1 (permalink)
Ian C GTROC Member Join Date: Jun 2003 Location: Buckingham Posts: 1,152	Denso High impedance 550cc injectors on RB26 Right chaps, looks like i may have been sold a dud.... Bought a set of Denso 550 cc injectors (195500-2020) on the understanding they run on the RB26DETT - turns out (from a quick search on here) they are for the RB25DET (non-neo) Impedance (looking at the web) looks like 13.7, which i think is way over the spec of the direct replacement parts! So, can I run them on my car at all, or are they going up for sale? Can I use the RB25 injector resistor? Anything I can change on my Apexi power FC PRO to make them run? Thanks, Ian __________________ Winter rebuild complete - Click here to see the 2008 look

22nd July 2008, 06:32 PM	#3 (permalink)
Ian C GTROC Member Join Date: Jun 2003 Location: Buckingham Posts: 1,152	If i have to butcher the loom then i don't fancy it - may as well just do it properly...So these are going up for sale! thanks for the help! Ian __________________ Winter rebuild complete - Click here to see the 2008 look

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22nd July 2008, 05:16 PM	#2 (permalink)
fletch.rb30 GTR Register Member Join Date: Jun 2008 Location: N.E London Posts: 39	They will work but you have to bypass the factory injector resistors, I dont have a pic on me, maybe someone here does. The factory gtr injectors are low impedance, but there is a resistor box in parallel with each injector to bring the impedance up. If you remove it and just hook up the injectors directly you should be fine. Im not 100% sure on this, but i think you can just cut the resistor box off about 30mm long, strip all the wires and put a crimp lug on them and this will do the trick.