hi honda-tech, let me appoligize in advance for how lengthy this will be but i need to cover everything that i have gone through to see if i can get this problem resolved.

the setup: 95 h23 s300 w/boost control/4bar map, turbo, 9-1 compression, walboro 255, rc 750s

the situation: i was driving to work one day everything was working great as it had been for a few months. the road was merging to one lane so needed to speed up to merge in. well boosted the car and the car backfired; which didnt seem weird to me cuz i had a spark blowout issue and the plugs were loosly gapped at the time for better partial throttle driving. right after the back fire everytime i hit the gas the wideband would go to full lean and would sputter so bad that could not get the car to drive. i pulled over to check for any obvious issues car idles really ruff but did not die. i started to move to get to a safer location and as i was about to pull into a parking lot it cleared up and drove normal. so i thought it was a glich of some sort since i was able to drive home with no problem. next day i was headed to meet up with the gf made about 20 min then all of a sudden began to sputter and lean out again. now this has been happening for almost a week, it will drive fine for about 20-25 min then begin to sputter badly. i never get a cel no matter how bad it gets.

attempted solutions: i datalogged the issue the only thing i could notice that was off was when it would sputter the af and lamda would fall flat then come back to normal. so i tested the o2 with the heater was testing at 9ohm instead of 10. no big deal but its new so in warranty. then tested the wiring wasnt holing steady volted. traced wires found the green/white wire was held on by 2 strands so cut stripped and soldered. replaced o2, but no go. thought maybe something happened in the motor did a compression test tested 121 122 121 120, did a leak down everything held well. tested tps .5 closed 4.99 open. checked voltage on all four injector, resistor box, main relay, wires to ecu all good. fuel pressure at 49 psi and holds strong. im seriously running out of ideas, any suggestions will be greatly appreciated and used.

thank you for reading

 

looking for any suggestions. like i said im at the ending point of ideas. i do have a tune set up for monday but want to make sure that i have covered all my bases.

 

well i figured it out. it was the tps itself. apparently the reason it would take so long for it to show up was because i had to hit the dead spot on the tps just right for it to trigger the problem and cause the car to act up. so if anyone comes across a similar problem in the future try changing the tps.