RX8 injectors
 

Is anyone using DENSO 195500-4460 RX-8 blue top injectors? They are rated at 540cc@3bar 13.8ohm, higher than the usual yellow tops people in the UK go for. Is there any reason why these would be a bad idea?

As long as you have a different than stock ECU, the injectors are high impedence, and they are PNP for the miata, you should have no issues at all.

looks like a EV6s - get 12 for $360[us] - sell 2 sets of 4 for $180[us] each
http://gzyongjian.en.alibaba.com/pro...injector_.html

Those injectors look 100% Miata PNP to me. I wish I would've known about these before I bought my 425cc's (195500-4450).

Thanks for the replies, I've now just bought a set.:bigtu: I was just wondering why they have never been mentioned before.

May I ask what you paid for them?

£70 - no idea what that is in dollars?

3, Accurate text on products

Why do they say that? Chinese clone?

Obviously a clone.

They are used and from a 2004 RX8. How does that make them fake or an obvious clone?

at today's rate ~ $107.00 [us]

damn good price

Add in the cost of getting them cleaned and I still think they are a good price.

I was referring to the link posted just above.

I want a set of these pretty bad. At $107 you can't go wrong!

I've tuned a car that has the blue "525cc" injectors. I can tell you right here and now, I wouldn't tune a car with these again.

Are these the same injectors?
https://www.miataturbo.net/attachmen...ine=1326729009

What was the problem with the tune?

These injectors don't like to idle at less than 14.2-14.3 at all. The idle hunts a bit too much for my own taste when EGO is enabled around idle too. This indicates poor atomization and linearity on low pulsewidths. I understand that people are looking to save money as much as possible, however the injectors would probably be one of the last things you want to "gamble" with.

Thanks for the advice. What injectors do you think would be ideal for a car running upto about 200bhp that wont break the bank?

Do you remember what the idle RPM's were? I could deal with idle being at 14.2 AFR, as long as it idles under or near 1,000 rpm's.

I'd get the yellow 425cc rx8 ones...4450 is the last 4 numbers. They should be good for your goal.

by the looks of the injector disc, these are EV6s;
have you had any experience [good/bad] with EV14s?

I've had excellent results so far with the following EV14 injectors:

- 445cc (FIC)
- 650cc (FIC, fiveomotorsports)
- 850cc (fiveomotorsports)
- 1150cc (FIC)

I do not like this EV14 injector:

- 775cc (FIC, rough idle at 14.7, compared to even the 850cc. Tested on two cars, 1.6 NB and 1.8 NB2. 1.6 was running at 43psi, 1.8 was running at 60psi. Both showed exactly the same results.)

ID1000's>all

I can't see how the ID1000 will be better than say, the FIC 1150.

I havent tried fic but you're probably right.
Both are top quality

the rx8 injectors aren't ev6s they are some type of denso fuel injectors.

The RX8 injectors Denso part number is195500 4460 and are rated at 540cc@3bar. From what Reverant says, I'm not sure if I should sell them on and get some others type. I thought that they may have been on par with the yellow tops when it came to spray pattern etc..

I have a set of yellow tops, hint hint. The funny thing is, they are the same in physical size as your 540's, and also the same as a '99 miata injector. A genuine mazda injector part number is always "195500" followed by 4 numbers. 4450 is RX8 425cc's, and apparently the 4460 is a 540cc. I also believe that fuel pressure affects spray pattern, so maybe Reverant's tuning issue was also fuel pressure related?

You know the saying "you get what you pay for" is very very often accurate and true.
Most quality parts don't cost less then others unless they're inferior. Some things more so than others, but an injector is not something I'd want to skimp on simply because it is in direct control of your cars health and behavior.

I doubt it.
Reverant is not a n00b and I'll bet this would be the 1st thing he'd check to make sure its dialed in right.

My buddy bought some crappy dsm injectors a month or two ago.
They run like absolute and utter crap.
We spent a whole night trying to dial them in. Tried every single fuel pressure setting we could possibly think of. In the end the car still hunts at idle, misfires at idle, and they are the most INCONSISTENT pieces of crap I've ever had the displeasure of tuning.

I completely agree with Reverant.

The inconsistency swings in AFR were well over 10%, which even a noob knows is WAY too much to be "ok"

The 4450 (425cc yellow top) are very popular here in the UK, we dont seem to have the choice you guys have, importing them can be crippling in tax and postage.

is the import tax the same for "used" auto parts? hint, hint

I don't think so, at least in the European Union you don't have to pay any taxes for them. This summer i'm moving to U.K. so it will be great to know what happens there.

If the declared value of the part is high, yes, you will pay import taxes.

Try to import a used laptop for example. If it is inspected, prepare to pay up, even though it is used.

Unless you sent it like a gift, in that case I don't think that you have to pay any taxes for this good. Customs don't know if you have or not paid for the stuff purchased.

The gift trick got old really quick. Even if it is a gift, the sender has a legal obligation to declare the "gift's" value. If that value is high, you get to pay the fees.

One of my favorite things is when people ask me to commit perjury so they can save money :)

Commit perjury and tax fraud, no less.

In Spain all is about tax fraud! Someone knows the price threshold when and object is subject to inspection?

I'm sorry, this post was interesting, lets talk again about RX-8 Injectors. =)

It is very different when you are an individual sending a single part to a different country as a "gift" verse being a company that producers products and sends them all over the world constantly. There is a much higher cost if you get caught committing fraud as a company.