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tripsteady

Jecs Injectors - From Usa ?

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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.





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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?

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Can't recall, about $700 but the 1000's were more than the 750's.

Also included connectors as they are required for early model z32 which mine is.

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If you like I could get the Makita cordless out and drill your stock injectors for you, no need to get them from the US... :P

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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 )

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

Some prefer 'nismo' on their shopping list

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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.

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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?

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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.

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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?

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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

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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 :(

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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

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Ok well , it seems like Nismo 555's are the Splitfires of injectors. Best place to get them from at the best price?

So far the best I see them for on eGay is $960 including shipping

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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.

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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

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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.

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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.

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