I swapped in a hybrid a6/h23 intake manifold a few months ago and have had really bad drivability problems since.
I have a pt6 ecu, double stacked iabs one is gutted, wired in with black box. 65mm prelude type s throttle body. cleaned egr ports. calibrated tps properly smooth sweep from closed to wot.
wideband says idling around 16.8-17.2:1. wot is around 15:1. it pops and backfires into the intake from stopsigns sometimes and it hits around 19:1 afr when the popping occurs.
I have no CELs and have tried different map, tps, clt and even bought a new denso o2 sensor. Wanna put my delta 272 and dc header on but I want to fix this issue first.
Have a chipped p06 with iab mod from xenocron but it runs similar afrs.
Somone suggested IAT sensor.
Car is in very good mechanical health and ran and drove fine before, although i didn't have the wideband to see the AFRs before I swapped the intake. it would hickup from stops on rare occasions but never backfire into the intake manifold prior to the swap. idles at 750 but shudders and shakes as soon as you turn on headlights or A/C or roll windows down which I think makes sense with such a lean idle ratio.
I have a pt6 ecu, double stacked iabs one is gutted, wired in with black box. 65mm prelude type s throttle body. cleaned egr ports. calibrated tps properly smooth sweep from closed to wot.
wideband says idling around 16.8-17.2:1. wot is around 15:1. it pops and backfires into the intake from stopsigns sometimes and it hits around 19:1 afr when the popping occurs.
I have no CELs and have tried different map, tps, clt and even bought a new denso o2 sensor. Wanna put my delta 272 and dc header on but I want to fix this issue first.
Have a chipped p06 with iab mod from xenocron but it runs similar afrs.
Somone suggested IAT sensor.
Car is in very good mechanical health and ran and drove fine before, although i didn't have the wideband to see the AFRs before I swapped the intake. it would hickup from stops on rare occasions but never backfire into the intake manifold prior to the swap. idles at 750 but shudders and shakes as soon as you turn on headlights or A/C or roll windows down which I think makes sense with such a lean idle ratio.
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