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Rb20Det Issue

S13Gene
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S13Gene Explorer

S13Gene

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Okay i have a rb20det that tends to bog/lean out right off takeoff 14.9 idle to 17.0 at less the 20% throttle, rb25 turbo afpr set at 38psi without vaccum, this issue accures when it cold and when its hot. i have checked maf voltage, replaced TPS sensor and set to .45 closed 4.4 WOT, also have change out coilpacks and ignitor with no change, plugs were changed out just 2 weeks ago. No missfiring, no bucking etc. This problem has haunted me since ive swapped in the Rb20 and now that ive worked out other issues i just need to figure this one out ive went throught via FSM and check ohms for everything ignation wise. no boost leaks it holds 20psi, and no vaccum leaks that can be found via Brake clean over everything possible to be a leak and the only place idle changes is PCV hose. if anyone can help put me in the right direction or have any helpful information on this please let me know.. im very mechanicly inclined so im no noob to Nissans or car Diag.

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S13Gene Explorer

S13Gene

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Fuel pump is a 255lph, um about 2 years old now i seem to get perfect pressure under no load. Filter filter was just replaced last oil change. Something i noticed yesterday when at the shop was the SAFC-2 which i use only for sensor check and RPM claimed TPS voltage was .38 closed but when check it from the pin at the ecu it was .45 which is were idle contact usally is idles like a champ and idles down great i have noticed random idle rps some times its 1300 few lights down its 850 which is were i have it set, maybe a bad or clogged/dirty AICV? Im trying not to tear about things that are not need to be taken off.. Also seems to feel less responsive when its warm but cts ohmed out good,

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