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Thread: USDM STI yellow side feed injectors - Definitive flow rate

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Posts: 51-60 of 80
2011-09-13 16:10:36
#51
Just talked to AEM and found out they list them as 500cc 13ohm.
Battery Offset for anyone else using the AEM EMS is as follows:

2550 / 2550 / 2000 / 1520 / 1180 / 940 / 750 / 620 / 520 / 450 / 380
6-16 respectively
Last edited by blairellis on 2011-09-13 at 16-15-48.
2011-11-02 15:48:43
#52
More on this:
NASIOC - View Single Post - Turbo FAQ: Read if you are thinking of upgrading!

Originally Posted by WolfPlayer
Sidefeed stock STI injectors are reported in this thread to be 480cc. I had all 4 of my stock injectors tested by both WitchHunter and RC Engineering.

WitchHunter results show 490-500cc.
http://www.bescaredracing.com/sti/fuel/injectors/stock/witchhunter/DSC05985.JPG

RC Engineering results show 517-524cc.
http://www.bescaredracing.com/sti/fuel/injectors/stock/rc_engineering/results.jpg

Basically, we are talking about a 25cc difference just by utilizing different companies. Also, keep in mind that if you get 1 injector flow tested then that means nothing since you could have tested either the lower flowing injector of the bunch or the higher flowing injector of the bunch. You need to have several tested. 10cc difference between my injectors.

Test the low flowing injector at WitchHunter and you get 490cc.
Test the high flowing injector at RC Engineering and you get 524cc.

It is now really easy for me to see, explain, and understand why some people said 480cc and why some people said 540cc. Lower flowing injectors vs. higher flowing injectors. One company vs. another company.

t
2011-11-02 16:26:23
#53
we use the same injectors but we ge them off the sti,s coming out of japan and singapore some of the subie guys over here say 480cc some say 520cc
2012-02-29 21:53:31
#54
Does anyone know the flow rate of the JDM '04-'06 Yellow Sidefeed injectors? Someone on the subie forums has them and I just wanted to see how much they flowed and if they would fit the same in the the VE fuel rail the same way the USDM ones do?
2012-02-29 23:31:04
#55
Originally Posted by SentraThis96
Does anyone know the flow rate of the JDM '04-'06 Yellow Sidefeed injectors? Someone on the subie forums has them and I just wanted to see how much they flowed and if they would fit the same in the the VE fuel rail the same way the USDM ones do?


535cc
2012-02-29 23:40:54
#56
Really, even with 0.5L less displacement? I guess I would have expected them to be less... I don't know how much power they make though. Maybe more than the USDM models.
2012-02-29 23:51:20
#57
Originally Posted by nsusammyeb
535cc


at 3 bar?
2012-03-01 01:35:58
#58
yea, used them for a long time. Very nice injectors at 4bar also. I was about 95% duty at 19psi on a very conservative map. Can't remember what the latency and voltage scale were though. Can get them if you need them though.

There's been a lot of debate on these injectors and exactly what size they are. I did A LOT of reading on them when I was tuning them with the Megasquirt.

Originally Posted by BenFenner
Really, even with 0.5L less displacement? I guess I would have expected them to be less... I don't know how much power they make though. Maybe more than the USDM models.


Is there yellow jdm's and yellow usdm's?
Last edited by nsusammyeb on 2012-03-01 at 01-40-00.
2012-03-01 01:57:48
#59
Yes, there are yellow JDM injectors. I thought they were more like 480cc or so.
2012-03-01 03:41:37
#60
I apologize for my ignorance then, thought the yellow side feeds were all the same. Check out witchhunter.com
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