Rx7 550 Injectors In A Rb20

[Bsa]

Hey everyone I know this has been covered before I'm not asking if they fit I'm asking is there tuning issues because of the jet spray? Also what other high impedance injectors will fit? I'm on a budget and nit keen on spending a g on injectors also not to keen on cutting the loom to put a resistor in but if a have to I can

Cheers in advance

[Room42]

Hey everyone I know this has been covered before I'm not asking if they fit I'm asking is there tuning issues because of the jet spray? Also what other high impedance injectors will fit? I'm on a budget and nit keen on spending a g on injectors also not to keen on cutting the loom to put a resistor in but if a have to I can

Cheers in advance

Here is some advice that wont help you f**k all. Everyone is on a budget. I budgeted $15k on driveline for mine. If you aren't keen on spending a g on injectors then you will really hate spending the other 5 g needed to make your car go fast.

Here's some advice that will help you. There is a seller on ebay called 1sickgt and they supply refurbished injectors. They have a better spray pattern than standard, a warranty, almost any size you desire and they are around the $500 mark to your door. They will refund you $60 if you send your old stuffed injectors in. Oh and they fit right in to your stock rail.

To answer your question, I have no idea but google seems to work pretty good.

[Bl4cK32]

Hey everyone I know this has been covered before I'm not asking if they fit I'm asking is there tuning issues because of the jet spray? Also what other high impedance injectors will fit? I'm on a budget and nit keen on spending a g on injectors also not to keen on cutting the loom to put a resistor in but if a have to I can

Cheers in advance

the only tuning issue is with the std ecu (rechipped) that doesnt handle the idle too well. PowerFC handled them no worries with my 3lt, giving 10L/100kms average. Im not sure what they would do with a nistune though, might be best to speak to the tuner.

[GTSBoy]

The rechip probably didn't have a good latency value in it for the 550s, hence the poor idle. You should be able to get a better result with Nistune. The main thing with the 13B injectors I thought was that they do have a fairly crappy spray quality so they're not as nice as any of the bazzillions of other options out there.

[Bsa]

Iv already spent 4 on turbo and the rest I just need injectors to suite as I'm putting a td06-20g turbo on with 17 psi through it and the stock injectors just can't hack that. I don't see the point in spending a g on injectors for a street car with the ocational 1/4 mile. I'll try and get onto the bloke that rebuilds the injectors that's for the help. I prob should of listed mods sorry about that

[bubba]

GTR injectors? I paid $100 for some GTR injectors and a carton of beer to clean/test them, I then made up a resister pack for a grand total of <$30 and knocked up a whole new injector harness

[Bsa]

How do you make the resistor what parts are needed

[bubba]

6x 10ohm 10W resistors from Jaycar, some wire, some heatshrink, a diecast ally box.

I used one big fat power feed into the box, split to the 6 resistors with 6 individual wires out. Traced back the common injector power feed in the loom, cut it and fed to the resistor box. I also traced back all the injector earths, fitted a 6-pin plug and made a whole new injector harness with brand new Bosch plugs.

Some people wire the resistors into the harness and be done with it, personally I think that's well dodgy. I put the resistors in a stack of 3x2 with gaps in between and ally shims top, middle and bottom. I used thermal paste on all contact surfaces between resistors, ally shims and ally case. Just make sure you heatshrink all exposed wires so they can't contact the case.

Thread: http://www.skylinesaustralia.com/forums/topic/62674-gtr-injectors-into-rb20det/page__st__100

Pic of my resistor box..

[DVS JEZ]

Looks very nice but how long did that take? And how much.

Might be worth spending the extra little bit on drop in injectors

[Bsa]

Yeah I had a look around and I picked up sone denso Injectors for 450. I had the option of 600cc or 750cc as that's all they had in stock both come with low pulse width and are high impedance just need to replace plugs which one will be better iv put a deposit on a set but can easily change up for the same price would 750 be to big? I was told that there are very easy to tune to requirements plus leaves me with plenty of head room in the future especially if I want to upgrade engines I will be getting them on Tuesday so input would be very appreciated cheers

[GTSBoy]

Depends on how big your future plans are. If you are thinking E85, then there's no reason to not get the bigger ones, but on petrol 600cc injectors are good for ~600 flywheel horsepower (give or take) which is a lot of power if you're just staying on the street.

[bubba]

Looks very nice but how long did that take? And how much.

Might be worth spending the extra little bit on drop in injectors

Which bit? The resistor box would have been no more than 2hrs max start to finish with plenty of smoke breaks. Probably the same again for the harness but that was done in a couple of stages (leader lengths weren't determined and plugs weren't fitted until plenum was finished).

Total cost for resistor box and harness would have been not much more than $50 (resistors, ally box, wire, heatshrink, conduit, grommet, new injector plugs and 6-pin/1-pin earth/power plugs for the harness).

I've spent $$$ on injectors before and for the current goals I couldn't justify it when I could install fresh 440s for a fraction of the price of an aftermarket solution. I now also know the injector wiring is all mintox

[Bsa]

I just wanted the ease of dropping in and tuning and it worked out around the same price by the time injectors are cleaned and I buy all the required parts it's around 400. Just got to shop around and not but the first ones you see

[bubba]

Well you will pay for convenience and sometimes I do just that but the GTR injector upgrade cost me a grand total of ~$160 (had to get some new o'rings too).

Hopefully the handy DIY'ers out they realise it's not rocket doctory and this gives them some motivation to have a bash

[Bsa]

I think it's a great idea of using factory parts there is nothing better as they are made for the car Nissan spent tones of money to get it right but it is convenience that wins most of the time just because it's easy

[bubba]

For me nowdays it's generally convenience>customer service>price, but if I can do it myself for a lot cheaper (and time permitting), I'll give it a bash.. at least that way I know which corners have been cut

[Bsa]

Yeah I know what you mean iv built this car on my own it's more satisfying but I'm running out of time I need it done I would of liked to use gtr injectors but wasn't sure how many kw they can handle so I just went the easy option that I know will work

[bubba]

Good luck! Please post vids of epic skids

[Bsa]

No skids maybe a 1/4 mile dash. Tyres cost me to much plus on the coast the cops are onto imports big time

[DVS JEZ]

Cul-de sac at the end of ur street has plenty of marks. Maybe some more wouldnt hurt. Just blame boydy if the cops show up. They normally knock on his door first