Batch to Sequential fuel injection problems
#1
Batch to Sequential fuel injection problems
Hello all, I own a 92 1.6 naturally aspirated Miata with MS2pnp, Flowforce 640cc injectors and a Walbro 255 pump, stock ignition. Since the car is a 1.6 and comes stock with batch fire injection, I decided to convert to sequential injection. After a days worth of research, I cut back my stock injector harness, snipped the yellow/black wire from the 2nd and 4th injector connectors, and connected them to the options connector for the megasquirt. inj. 2 to pin 26 (inj D output) and inj. 4 to pin 18 (inj C output). After buttoning everything up, I pulled up TunerStudio and changed from untimed to semi/sequential injection. After starting the car I noticed it seemed to be running rough. I used a stethoscope to verify all 4 injectors are firing and checked spark just to be sure. But still the engine idles rough almost like it’s running on 3 cylinders, I drove around the neighborhood and noticed an extreme lack of power as well. I am at a loss and do not no what else to check besides voltage at the injectors. I have had no issues prior to attempting this mod. Any input would be appreciated, I spent a few hours online verifying my work and I do not think my wiring or megasquirt settings are to fault. The fuel injectors and fuel pump are very new as well as the megasquirt itself.
Last edited by drakec9; 11-17-2019 at 09:06 PM. Reason: Grammar error
#8
MegaSquirtPNP by DIYAutoTune.com
MegaSquirtPNP by DIYAutoTune.com
these are two of the articles I referenced when researching this mod, I have the MS2pnp 1.3 main board. I only see jumpers needing to be moved in the MSPro unit which I do not have, I was thinking maybe having a problem with the fuel injectors or pump but it seems unlikely as these are so new. I know there is a test mode for the injectors in tuner studio but I am unfamiliar with the process
MegaSquirtPNP by DIYAutoTune.com
these are two of the articles I referenced when researching this mod, I have the MS2pnp 1.3 main board. I only see jumpers needing to be moved in the MSPro unit which I do not have, I was thinking maybe having a problem with the fuel injectors or pump but it seems unlikely as these are so new. I know there is a test mode for the injectors in tuner studio but I am unfamiliar with the process
#9
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MegaSquirtPNP by DIYAutoTune.com
MegaSquirtPNP by DIYAutoTune.com
these are two of the articles I referenced when researching this mod, I have the MS2pnp 1.3 main board. I only see jumpers needing to be moved in the MSPro unit which I do not have, I was thinking maybe having a problem with the fuel injectors or pump but it seems unlikely as these are so new. I know there is a test mode for the injectors in tuner studio but I am unfamiliar with the process
MegaSquirtPNP by DIYAutoTune.com
these are two of the articles I referenced when researching this mod, I have the MS2pnp 1.3 main board. I only see jumpers needing to be moved in the MSPro unit which I do not have, I was thinking maybe having a problem with the fuel injectors or pump but it seems unlikely as these are so new. I know there is a test mode for the injectors in tuner studio but I am unfamiliar with the process
Click enable test mode, and use settings like the above in injector testing. Then cycle through each injector channel. You should be able to hear each one, and which position it's in.
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apariah
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08-03-2015 10:13 AM