this is issue im having with my turbocharged integra. i was doing some datalogging to find out why my vehicle would stall out while riding in neutral or coming to a stop. in my logs i noticed that the TPS would drop first and then everything else would follow suit in which would equal to my vehicle to stall out. i checked the calibration on my TPS, which i installed a few years back on my blox throttle body. when i installed it originally it was reading at 0.5 volts closed and 4.5 volts at WOT. when i checked it this time, it was .38 volts closed and 4.38 volts at WOT. not sure how it managed to drop on its own but i tried to re-calibrate it to find out that i couldnt reach .5 volts. i let the car sit for a few days and when i tried to start the vehicle i noticed that the battery had died, i soon had the battery fully charged so i can continue to work on it. once it was done i was able to start the vehicle but my TPS was still reading low. swapped out the TPS with a new one i purchased at NAPA, still same results. now i feel that i shouldnt have touched the TPS because i cant get the car to stay on once i give it gas. i did clean the iacv but the results remain the same.

i did some research and some of the symptoms ive experience such as: sputter, stalling and fluctuating idle can be caused by the IACV. funny thing is im having these issues with no code being shown on the dash. would it be a good idea for me to replace the IACV or be looking into something else? i mean, i cant get the TPS to read at .5v for some reason which is confusing me. i have found some replacement IACV on ebay for around $60 while places like NAPA have them for around $180+. id rather spend $60 to see if thats the issue than spend $180 and find out thats not the issue. any suggestion?

oh yeah, the IACV is OEM that came with my car, in 1995.

specs:
b18c1
84mm CP pistons 9:1
manley turbo tuff rods
STC predator turbo
synapse auto ramhorn
walbro 255lph
precision 1000cc injectors
crane cam external coil
summit racing ignition box
send it racing ICM bypass
elderbrock victor X