lowrider Posted March 19, 2010 Share Posted March 19, 2010 I just finished swaping a turbo onto my 83 NA block, along with the NA ECU. I however didnt swap larger injectors when i put everything on. Im using an 12:1 FMU to provide extra fueling, but unfortunately im maxing out the injector duty cycle around 4000rpm. After this little back ground, has anyone used SOHC KA injectors? I've researched till my head is about to explode. I know that the KA injectors are 265cc units(same as the stock turbo injectors) and i know they are high ohm also. I know you have to run a dropping resistor if your ECU is high ohm and the injectors are low ohm, but what about the other way around? Any light shed onto my buldging brain would be greatly appreciated! Quote Link to comment Share on other sites More sharing options...
lowrider Posted March 19, 2010 Author Share Posted March 19, 2010 Well, im going to go ahead and grab the Ka injectors. In theory all should play together, and the least that can happen is that they dont flow enough being high impedance on a low inpedance ECU. Im able to get 8 for free, so if anything ill just be out my time of swapping the darned things. Quote Link to comment Share on other sites More sharing options...
lowrider Posted March 21, 2010 Author Share Posted March 21, 2010 well, the Ka injectors work nicely! good solid AFR's up to redline... Quote Link to comment Share on other sites More sharing options...
cd1105 Posted April 9, 2010 Share Posted April 9, 2010 So no running rich or lean? If so,thats good to hear I have a 82 l28et with a pallnet fuel rail and i plan on using 265cc high impedance injectors from an eclipse. I going to run a stock turbo ecu which is low impedance with the high impedance injectors and see if i can get good results, so its nice to see your setup is working. Quote Link to comment Share on other sites More sharing options...
lowrider Posted April 9, 2010 Author Share Posted April 9, 2010 So no running rich or lean? If so,thats good to hear I have a 82 l28et with a pallnet fuel rail and i plan on using 265cc high impedance injectors from an eclipse. I going to run a stock turbo ecu which is low impedance with the high impedance injectors and see if i can get good results, so its nice to see your setup is working. It ran rich at first, after tweeking the afm wheel a little bit i was able to get it just right. Im maintaining 14.2 AFRs cruzing and around 12.5 under boost. Im no longer using my FMU to provide extra fueling, i made a circuit that introduces a potientometer into the head temp sensor feed at 7psi to increase my duty cycle. So far so good the injectors are doing their job without a hitch. Quote Link to comment Share on other sites More sharing options...
cd1105 Posted April 12, 2010 Share Posted April 12, 2010 Hopefully all i have to do is play with the afm too. Quote Link to comment Share on other sites More sharing options...
lowrider Posted April 12, 2010 Author Share Posted April 12, 2010 Hopefully all i have to do is play with the afm too. If your running the turbo ecu then you wouldnt have to. The factory turbo injectors are right around 265cc. Quote Link to comment Share on other sites More sharing options...
lowrider Posted April 12, 2010 Author Share Posted April 12, 2010 (edited) double post Edited April 12, 2010 by lowrider Quote Link to comment Share on other sites More sharing options...
cd1105 Posted April 12, 2010 Share Posted April 12, 2010 Yea exactly why im going with the eclipse ones but there might a little variation. Quote Link to comment Share on other sites More sharing options...
lowrider Posted April 13, 2010 Author Share Posted April 13, 2010 (edited) Yea exactly why im going with the eclipse ones but there might a little variation. I would think that it wouldnt be more than the O2 sensor could trim out. But ofcourse ive never messed with a turbo ecu. Edited April 13, 2010 by lowrider Quote Link to comment Share on other sites More sharing options...
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