Efi up and running, sorting out initial problems, just called performance trends and ordered EVERYTHING they sell to convert the dyno to modern software WITH extra inputs and USB /windows capability. Norms depac is pretty consistent and fairly accurate, what it doesnt do however is allow me to input data from my 10 o2 sensors, only 2, I used AEM conversion boxes to change 0-5 volt analog 02 readings to data, the flaw is this backwards ass **** uses serial data to usb convertors and 9 out of 10 times refuses to connect to the lap top, tired of it, done, ****s going in the trash (aem). Mounting the new software side by side with the depac, will be able to make pulls and see both results! Nothing more frustrating then having nice data acquisition and NOT being able to completely use it trouble free!!

Those 2 black aem boxes in the above pictures are EVIL, done with them!

Remember the old saying. KISS "keep it simple stupid". We have all this cool technology but seems like chit is always failing. Makes you think about HEI and Carb. Btw I continue to tell myself kiss so it wasn't directly meant for you. I've been keeping up with your thread and glad your sharing everything. I give you a lot of credit...

This is an amazing window into some deep work that hackberries as myself just don't get to see. My hat is off to ya.

hackberries,that,s funny chit baja chicken.

makes me think of EFI !!! works great till it dosen't ...sorry smitty

Havent even touched on the efi teething problems. After motors wsrmed up it drops 1 batch of 4 injectors above 2500 rpms on green/black side of mefi harness. IF i was able to quickly and efficiently connect the 02 data everytime from all 10 sensors would have took me a hour to get done what took me 8 over past couple days. Im fairly knowledgable about efi and programming, i have no idea how someone w no experience could get past these problems. 1st order of business is getting new software connected after it comes so i can see the afrs perfect on all 10. Today going to trigger ign module w msd tester while i watch batches fire w motor off, try to get to bottom of it. Oh yeah, two ecus and two harness, same problem so thats why im scratching my head

are you running the stock distributor and coil ? are all the grounds tied together

Yep, motor has ran out to 6400 with current set up, just after a few minutes of run time same bank quits on 4 of the 8 injectors. Hooking msd signal generator to gm 7 pin module w oscilloscope and vom on injector leads right now, every efi i ever played w seems to have initial problems. Once thry are sorted out stuffs fine. Evertime i learn something else i didnt know before. Last motor w mpi intake had imbalanced afrs from 3000 to 4000 something, turning on double fire injectors straightened it out. With this open plenum intake it didnt like that , when i turned it back to single fire stuff straightened out BEFORE this batch problem started

didnt you or someone else perhaps have near this same issue a few months back? Great thread and hope you get it sorted out.