Jump to content
SAU Community

Recommended Posts

Hi All


I know Nissan cars use these as OEM and they come with flow charts and a 3 year warranty(which is useless for me since its in the US)



Has anyone purchased this before? Good or bad idea? Dont really want to fork out $1000 for Nismo's if these do the job.





Link to comment
https://www.sau.com.au/forums/topic/440013-jecs-injectors-from-usa/
Share on other sites

Custom, flow-matched, 750cc, side-feed, high-performance, Nissan fuel injectors

  • Fits your stock fuel rail and intake for Nissan 1993-98 Skyline RB25DET, 1993-96 300ZX
  • All new o-rings included for installation
  • This is a brand new set of 6 (six) injectors--custom manufactured from genuine Nissan/Japanese Electronics Corp (JECS) fuel injectors to flow at 750cc/min at 3 bar

FLOW CHART: Each set is sold with a complete flow-data chart indicating individual dynamic and static flow rates at 3, 3.5, and 4 BAR at 25%, 50% and 100% for each injector, along with dead time (latency) at 14 volts.

Flow matching was done with industry-standard equipment of the highest quality. The test was performed at varying temperatures to achieve realistic results.

All have been custom manufactured from original equipment

Japanese Nissan (JECS) fuel injectors to the higher flow rating and placed in flow-matched sets and sold with our 3 Year New Parts Warranty.

To insure a quality product our shop adheres to the highest standard of manufacturing/milling and flow-matching using the industry's best-quality equipment.

We use Heptane as our testing agent.

This injector set is for modified engines with high horsepower. See Chart below.

$510 per set of 6 fuel injectors

Injector Body Design: Metal and composite plastic

Flow rates:

(These are true and tested flow rates of this individual set of 6 fuel injectors.

We use Heptane as our testing agent).

750cc/min at 43.5 psi (3 bar)

Excellent low pulse width response with predictable response.

Excellent atomization for modern multi-valve engines.

This set will require no more than a 1% trim for easy tuning.

Item Condition:

All of the Fiveomotorsport fuel injectors are shipped in brand-new condition unless otherwise stated as reconditioned or take-out injectors. All fuel injectors are covered by our warranty outlined below, unless otherwise stated.

Fiveo's Exclusive Warranty:

We stand behind all of our products with our 36 month/unlimited miles warranty. If you are not 100% satisfied, we will refund your purchase price for returned unused fuel injectors in their original packaging, minus shipping costs and up to a 15% restocking fee. If you ever have an injector go outside specification or fail for any reason when functioning within the stated operating conditions, we will replace it with a brand new fuel injector. You pay only the shipping costs. (Some racing applications may void this warranty).

Shipping and Handling Time:

All orders received by 2pm PST Monday-Friday will ship the same day. Orders received after 2pm on Friday will ship the following Monday. Average delivery times are listed below:

USPS priority mail – 3 business days

USPS Express International – 5-8 business days

FedEx Overnight

FedEx 2-Day

Can't click ebay link at work... Side feed rb25?

Suggest trying Coz and www.conceptzperformance.com for Jecs. I bought my 1000's from him. Great to deal with, fast shipping.

How much did you pay?

I bought the 1000s from 5omotorsport and so far so good.

awesome, probably going to go 550's. Any other experiences from JECS from the USA?

Also, why dont people do this as a cheaper alternative to $1000 Nismos?( or is this route a common upgrade for injectors )

Because highflowed injectors usually have a shitty spray pattern, and they can cause idle issues, especially in the higher volume injectors. A flow test doesn't show the quality of the nozzle, or if the body of the injector is second hand as Mike mentioned.

You are better off changing to a top feed rail and shoving Bosch ev14 injectors in there imo. Cheaper, faster, better spray pattern, and no issues with ethanol if you decide to upgrade. There is a good reason people recommend them.

A bit grey on info, but some of the JECS are remanufactured.

Some prefer 'nismo' on their shopping list

Heard of this , but this one seems to be rand new. I think the remanufactured ones are sold in AUS (i would not buy re manufactured personally)

Because highflowed injectors usually have a shitty spray pattern, and they can cause idle issues, especially in the higher volume injectors. A flow test doesn't show the quality of the nozzle, or if the body of the injector is second hand as Mike mentioned.

You are better off changing to a top feed rail and shoving Bosch ev14 injectors in there imo. Cheaper, faster, better spray pattern, and no issues with ethanol if you decide to upgrade. There is a good reason people recommend them.

This is exactly what I was looking for.

There are common upgrades for the RB ( z32 afm , splifire coils etc)

What is the common upgrade for injectors (am I to assume its the 550 Nismos?)

Dont really want to go top feed and have to mess around with brackets. Is there anything else with a proven track record that is drop in?

Sard 650's, nismo 555(old)/615(new)/740.

I used the 1000cc jecs without issues.

Originally used sard. Did not have a good time with them.

Can you elaborate more on Sard as I have been thinking about going with them as well....

Whats the Splitfire equivalent for injectors( an item that has been tested continuously my members of this forum with almost all of them agreeing that these are good reputable items) Are they Nismo 550's?

Can only speak about z32 application but part number is same.

I do not like the way that they use an oring on an oring to seal the injector into the bucket. That's the first/main issue (again, in z32 application).

Second issue is they cost me 2 engines (1 forged) because 1 was not flowing as it should at higher duty. Issue was masked by the others showing 'safe' afr's.

Not specifically the injectors fault, but I blame them :P

Nismo 555's have been used in z32 for aaaaaaaaages. They are the benchmark for oem replacement, upgraded injectors.

New style nismo 615s have superceeded the 555's AFAIK.

Edited by MagicMikeZ32

Can only speak about z32 application but part number is same.

I do not like the way that they use an oring on an oring to seal the injector into the bucket. That's the first/main issue (again, in z32 application).

Second issue is they cost me 2 engines (1 forged) because 1 was not flowing as it should at higher duty. Issue was masked by the others showing 'safe' afr's.

Not specifically the injectors fault, but I blame them :P

Nismo 555's have been used in z32 for aaaaaaaaages. They are the benchmark for oem replacement, upgraded injectors.

New style nismo 615s have superceeded the 555's AFAIK.

If Nismos are the go to, then I might just fork our for that. I'm a believer of do it once do it right and am not about to cheap out on something like injectors. Oh well , thought Id find something a bit cheaper that would do the job. Guess not :(

I was originally looking at the Five-0 Motorsport injectors as well. But heard Stao (Hypergear) had one fail on him, and then search on the interwebs showed several reviews where reliability was coming up as a concern. I'm sure there are plenty that are running with no problem as well, but it was enough of a worry for me to fork out the extra for the Nismos.

And yes, I do also like seeing Nismo on my shopping list :P

Be careful, there are many fakes getting about.

Still much cheaper to grab a top feed rail. It's not hard to fit either. Just get them to do it before it goes on the dyno. Has anyone tried the 34neo rail yet? I think a few are running them, might be worth looking into.

Be careful, there are many fakes getting about.

Still much cheaper to grab a top feed rail. It's not hard to fit either. Just get them to do it before it goes on the dyno. Has anyone tried the 34neo rail yet? I think a few are running them, might be worth looking into.

Dont want to make my engine look more modified then I have to. Keepin the po po's at bay :)

I'm thinking of getting it from here(seller jdmplanet on eGay):

http://www.ebay.com.au/itm/NISMO-555CC-INJECTOR-SKYLINE-R33-ENR33-ER33-ECR33-RB25-RB25DET-X-1-/221185258946?pt=AU_Car_Parts_Accessories&hash=item337fab35c2&_uhb=1

Unless someone can suggest a reputable dealer?

Also would I need to purchase a fuel reg? Shooting for 230rwkw

Edited by tripsteady

No to fuel reg - you wont get anywhere near to maxing out 550s. They're an ugly hack anyway.

Edit: FYI the rule of thumb for 6 cylinder engines is 1 flywheel HP per cc of injector size, so 550cc injectors means ~550HP.

No to fuel reg - you wont get anywhere near to maxing out 550s. They're an ugly hack anyway.

Edit: FYI the rule of thumb for 6 cylinder engines is 1 flywheel HP per cc of injector size, so 550cc injectors means ~550HP.

Thanks Mr Stabby. I have all the answers I need now :)

Nismo 555's here I come. I'l create another thread for best price/best place to buy 555's. I havnt seen an updated one before and it should help those looking to buy the 555's as they are a popular upgrade.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Yeah, thumbsup from me. The distant shot of the bay just looks same-same as before.
    • Dad had a court case drag out with them from 1998 to 2004. He was in a not at fault accident, NRMA were the ones who covered the other person. They tried to blame his neck injuries on the fact he'd had an injury in 1981 on his extreme lower back where he slipped a single disc right near the bottom. Had been all cleared from that injury for years. This accident destroyed his shoulder, and f**ked a heap of discs in his neck, and he still has major problems with it to this day. Sarah's sister while on her L plates had a small Suzuki Alto, she had stopped to give way to an ambulance, and someone changed lanes behind her because there lane was also slowing, and rear ended her at 80km/h. (She had been stopped for a few seconds already too!). Car was completely f**kED. NRMA sent the vehicle around to 3 different workshops as they kept claiming "We believe it can be repaired, and not written off, we just need to find the correct workshop". It took 3 months, and a lot of arguing before they'd concede and wrote it and paid out. About two years later her sister had a Lancer, someone pulled out of a stop sign without stopping (in an 80 zone). Her sister swerved, hit the front of the other persons car (Instead of dead t-boning the drivers door), which ramped her Lancer, and made it roll multiple times down the road. It hit every panel on the way through. Her sister had slid her self out of the car, and remembers the ambos walking to the accident (They'd been sitting at a set of lights just down the road and witnessed it) and they were saying "Well, this ones going to be a fatality, no way you can walk away from that". Well, she did. And then NRMA sent two assessors out to look at the car, both of which wrote it off. They tried to send another assessor out, except a HUGE uproar was raised, and they FINALLY paid it out. That was on a car, that had damage to EVERY panel, you could see from 100m away the whole car was also twisted, roof bowed etc. Nah, we'll try get out of needing to payout on a $10,000 car... Her sister ended up with major shoulder reconstructive surgery being required, and was permanently limited in her ability to do her job as a nurse after that, as she can't (And was told before surgery too this would be guaranteed to happen) regain full strength in that shoulder. However, there was no choice to not have it, as she could barely use her arm, which was her dominant one, and was in near constant major pain. (And she's the type of person that would try and walk off a broken leg!) NRMA did the biggest run around on the personal injury side too for about 18 months, even to the point of trying to put 100% blame of the accident on Sarah's sister, even though the other driver admitted she didn't look, and didn't stop, and was charged by the police. Sarah used to have a Barina insured with them. It was a policy setup, paid all 12 months in advance. At the end of the 12 months, Sarah was living with me, I reviewed the renewal, it clearly stated "If you do nothing, your policy will cease on XYZ date". We did nothing, as we moved her insurance in with all of mine and I was with Shannons. We find out 10 months later, NRMA decided, because he DAD had a car insurance policy at the same address as what Sarah's mailing address was (Garaged address had been changed), that they'd put Sarah's (What should have been non existent policy) onto her Dad's month to month charges on his credit card. We had to jump through hoops, to get a refund. They didn't care that we actually found the letter that said "If you do nothing, your policy will cease" they made us prove we had NON COMPULSORY insurance else where before they'd issue the refund, and after they agreed to the refund, it still took another 6 weeks and 3 more phone calls for them to actually process it. They also had two insurance claims from storm damage, and they were an absolute cluster to get resolved as well (one vehicle, one house). Some how, up until about 3 years ago, her parents were still loyal to NRMA too, and we were like "How the hell are you so loyal to staying with them, when other places are so much cheaper, and they've f**ked you over every time you've ever had to make a claim?"
    • I got the four AN10 fitting welded up to the cam covers and started up making the head to sump breather/drain lines. The front passenger side cover I used a 45 up top and a 90 at the bottom into the stock VCT head drain spot (3/4" BPST to AN10 adapter) thats unused on the RB25DET NEO with some speedflow flame shield to protect it from the manifolds heat.   back passenger side was a 90 up top with some flame shield and 45 at the sump end. The rear drivers is 45 at both ends   the front drivers fitting is capped off for now but ready to go if i want to try moving the breathers around. I was told by the fabricator to leave all the welds raw for now to make sure there are no pin hole leaks. A lot of cleaning up, re bundling looms and degreasing to go as well as final assembly on the cam cover baffles. The first real test will be 28th March at a Circuit event. added complexity and more spots for leaks but overall looks relatively neat imo
    • Yeah i think the dash needs to come out. To get the loom or maybe just climate control and radio cluster. My mirrors are done i think the motors don’t work so well after flood haha i need the ac fan, you said you wanted to keep it for your 31 and interior loom not including boot. The wiper motor. I’m not sure how good the window surrounds are on the exterior on the pintara.  I will message you to get your bank details shortly 
    • Just another barrier put up to stop cars being modified. When we're all driving Chinese sewing machines, you won't want to modify it anyway, and you'll likely already have slashed your wrists and be locked up in a padded room for your own protection.
×
×
  • Create New...