OEM Acura RDX Fuel Injectors....

[skittleslegend]

Interesting read for you folks looking to build your engine using more OEM parts than aftermarket. You could modify the stock injectors, but I've seen RSX-S injectors max out at 8,000RPM. I recall reading something in regards to the OEM Si injectors doing something similar.

http://www.k20a.org/forum/showthread...highlight=cams


Cliff notes:
http://www.hondanews.com/CatID3091?m...44320&mime=asc

Special high-flow fuel injectors with a wide dynamic range contribute to the RDX's low emissions and high horsepower, and a variable-flow fuel system also contributes to low evaporative emissions. The accuracy of the control of the injector has been increased so that less fuel can be injected during certain situations (such as idle).

The clips are not the same. You'll have to modify the connector on the injector itself and everything will work just fine. You'll need a hacksaw to do the rework.

Originally Posted by nikos

RDX injectors are flowing around 410cc and seem to have the best atomization from any other OEM injector.

PART number is: 16450-RWC-A01
Retail is $47.42

and most online dealers will sell them for 37.94 each....
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....I was told that the RDX injector has the potential to outperform a higher cc injector due to better atomization. Then I thought about the RDX acura motor being the first acura turbo motor and the need for a more efficient injector. To my knowledge there has been no back to back dyno with RDX injectors, but I was told there could be a potential 2-3 whp gain just by the injector.

Originally Posted by BERT-O

I will certify that changing your injectors to 07 RDX will make about 2 lbs of torque at the wheels, which can translate into 3-4 HP up top.

That is certifyable and true due to better atomization, its a finer mist. It gives you the similar effect to moving your injectors BACK up the runners farther like ITB's, which will do the same thing.

They are about $45 an injector at your dealer.

[06Fg2]

Nice find Skittles. Now someone try this ****.

[skittleslegend]

I think I might have to. Considering they apparently flow as much as RC 550's, due to their high atomization, the value is very high. The RC 550's are $95.42 vs. the RDXs at $39-45.

[SiRyan]

With no mods at all but these injectors will give you hp/tq increase??? Nice Find BTW!

[Shark Tek]

I dont know but something on my mind tells me that our car needs also a reprogrammed ECU to take full advantage of these injectors.

[sickyute]

i run 650 cc injectors right now .... what say u?

[skittleslegend]

Originally Posted by sickyute

i run 650 cc injectors right now .... what say u?

Honestly, I dunno, but I'm really curious as to the potential since the RDX, according to TOV, was apparently intended for higher boost applications (with exception to the ECU). I wouldn't be surprised if they're capable of flowing more fuel than the 650cc's once modified....

[sickyute]

i'll look into it ... might do a test ..

[skittleslegend]

Actually, I think I will too. At the moment, they're pretty cheap, but I'm sure once Honda realizes this them *****'ll be twice the price :sadwavey:

[sickyute]

i bet comptech will offer them modified soon.

[reaper702]

Originally Posted by sickyute

i'll look into it ... might do a test ..

waiting for the results

[dwnshft]

Will the RDX injectors fit in the R18 civic motors as well?

[lovin_it06]

Bad News!!!!! I just checked with a parts guy and these injectors are all sold out. If anyone knows what if any mods need to be done to make these work on the si please give all of us your 2 cents.

[sickyute]

looking into it ...

[lovin_it06]

Thanks I was going to get them myself and be the "first person" but all out. I kind of wished they had them I want to have a new project

[sickyute]

check online ... u can still be the first ...
i won't buy anything until i can get more info ...
or i may have them, just post pics but not do an install or anything until i know what i'm getting into ...
so go ahead ... look harder ... shouldn't be hard to find.

[skittleslegend]

Originally Posted by sickyute

check online ... u can still be the first ...
i won't buy anything until i can get more info ...
or i may have them, just post pics but not do an install or anything until i know what i'm getting into ...
so go ahead ... look harder ... shouldn't be hard to find.

You'd be surprised....this inventory is based on all Acura dealers, online or not. Good luck finding them at the price I posted after the inital batch went out of stock. Here's to hoping Honda doesn't catch their pricing mistake. Or hope it wasn't a mistake.

Originally Posted by lovin_it06

Bad News!!!!! I just checked with a parts guy and these injectors are all sold out. If anyone knows what if any mods need to be done to make these work on the si please give all of us your 2 cents.

Refer to the original post. If you need further clarification, check the original thread from k20a.org.

[stevieray]

'Tee, are the injectors the same for the K20 & the R18? Just curious----

[NBPRudy]

I was curious about this so I checked stock and your right skittles...B/O

This is in Canada but the US is showing lots of stock.Any Canadian dealer can get them in 5-7 days and American dealers shouldn't have any trouble getting them.

[06silverlx]

Does anyone know what size the stock r18 injectors are?