cr-rex

iTrader: (114)

so i took a break from the car to collect myself and not push it into a river. i ohm'd the plug wires and this was the result in k(ohms)
1 1.23
2 .27
3 .34
4 .38

these results were on the taylor cables that i removed from the car. you can see the discrepancy with plug 1. i got a brand new set of cables and the idle is smoother than its been up to this point. it idles great and revs great. the afr still goes unchanged and the problem still remains. i also tested the sensor per aem and it checked out fine. the next step is to ohm the coil packs. i didnt feel like removing the uim to get to them once i swapped the plug wires out. i will do it tomorrow or tonight. i dont know. -__________-

cr-rex

iTrader: (114)

i have returned from my vacation and will be getting to work on this again soon. im still in the same position as i was before with having as much direction as a rock. i will be swapping the coil packs since i didnt get to it before i left. does anyone have any suggestions on what i should be looking for? would an aftermarket main pulley cause any sort of issue like this? i will be swapping the stock main pulley back on just to do it. there arent very many options at this point. i would like to say i am getting closer and closer to ruling this thing into a tune based issue. like i mentioned before, before getting the car towed 3 hours away, i need to be 1000% sure thats all it is. i would rather do all the troubleshooting at my home than pay the tuner to do it and have him just re-do everything i have already done. its a real dicey situation

cr-rex

iTrader: (114)

so.... kind of problem solved. i can boost in all gears now and the break up is gone entirely. my idle is stable and the afr is in the 12s. it will fluctuate from low to high 12s but is in the 12s. normal driving is pretty much perfect but now the new problem is boost.... well, it was the original problem but now its different. as soon as i start to lean into the throttle it goes super rich then starts to go lean as i build boost. through an abundance of searching and reading i found this whole time i was looking in the wrong place. my issue was in tab 5 of the fc edit. the injectors table was all wonky even from the initial tune from when i bought the car. i will be making a new thread in the power fc section since i think this is where its headed.

this was the settings before


this is what i set them to and it got me where i am


according to various threads my settings were off based on my injector sizes. RC engineering 850/1300. the only unusual thing is the lag time. the only way i was able to get the afr to lean out was by going to -.30. even then it only leaned out a little bit. mid to high 11s. at -.40 it got to the 12s. from what i am reading, the typical lag time should be +/-.04 depending on what works. i understand that every car is different but i feel like theres another issue at hand that requires me to go to -.40.

this is where i am continuing my issue for that that want to follow along

https://www.rx7club.com/power-fc-for.../#post12102631

cr-rex

iTrader: (114)

just so this thread has closure, the issue has been found... sort of.

the more i play around with the injectors the better or worse i am able to make the problem. i am writing this off a tune related problem and will be getting the car retuned.

cr-rex

iTrader: (114)

for future reference... the ACTUAL problem has been found.

the fuel pump couldnt keep up with the demand and after doing the rewire, problem solved. im using a brand new denso supra tt pump. i cant explain why the factory wiring isnt sufficient but it just wasnt. this would explain why i could boost in higher gears as well. its boost but at a lower load and the pump could keep up. lower gear with more demand and it falls short. the "funny" thing about this is that i did the rewire in the course of me troubleshooting and it made things worse so i put it back to stock. its a bitter sweet victory since ive spent such a large amount of time troubleshooting when the whole problem was this. at least i know all the components in the engine bay work properly lol