my new rb25 wont stay alive

[Onescruffyguy]

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the problem im having is hard to start and get to idle, after awhile of starting it, it will idle if i keep feathering the throttle. once fully warmed it will idle around 1200 rpm. now i'll try to drive and it will stumble then pick up and start to boost around 2700. I could be on wot and it will sound like its boosting or atleast wanting to boost but feels like somethings holding it back. as soon as i lift of the throttle,it completley cuts out and dies. if i unplug the iacv or aac valve and nothing changes, could this mean its bad? also when i unplug maf, or tps ill get a trouble code but no code when i pull the iacv plug. i have a stock ecu, turbo and injectors, walbro 255, fpr set at aound 40, freddy manifold stock tb. and open air bov. vacuum tested and passed, spark plugs and wires tested and passed. maf tested and passed. i cleaned the iacv, it was grimmey and the spring would get stuck open. after cleaning, the spring will return but still no change and the wires are getting voltage. i've turned the idle screw in all the way an back out a half turn but then it wont start at all. its likes it at atleast 4 turns out. also smells like im running rich. dont think its the bov venting cause it doesnt even get a chance to vent before i'll die out.

[Carl H]

are you venting the stock bypass to atmosphere?

[Onescruffyguy]

its vented, tried r2d2 and type s. forgot to add i have ebay intercooler and 3" cold pipe- 2.5" hotpipe
first start, since this i have bolted up the exhaust.... and tested vacuums and such

[Onescruffyguy]

update, i put the stock fpr back on and now no hard start, but it still bogs when hitting boost then it falls on its face and cuts out still.

[rhd240]

off topic but just had to say i like the green..real close to the color i mixed for my car

[Onescruffyguy]

thx! it's a single stage ppg called "fender green" everyone keeps asking if im going to paint the rest of the car that color, but im not really planning on it.

[rhd240]

Gotcha...mine was gonna be a custom mix green that looked like the new camaro but i seen it as a factory color and darkened it up and add a green pearl over it ...all custom mix so no one should have the same color

[Darius]

thx! it's a single stage ppg called "fender green" everyone keeps asking if im going to paint the rest of the car that color, but im not really planning on it.

Looks like John Deere green to me haha

[Onescruffyguy]

i know right! just need some yellow stickers... actually i was going for heineken green, but i missed it by a couple shades.

[Onescruffyguy]

another update: got the bov recirculated and it doesnt stall at all anymore. (thx Carl) I had to fully advance timing just to idle and drive or if its timed at 15 degrees it won't even idle. now im still bogging in the upper rpms and very little power. seems like im burning thru gas but the plugs arent wet. I replaced the o2 sensor with a new z32 non turbo and still no change. a couple of friends say coilpacks but thats another 500 bucks and we're guessing. any suggestions?

[Carl H]

pull codes, my bet is that its in the knock maps...pretty typical symptoms when it pushes to to those.
shouldnt have to go to full advance to get the car to run.

[Onescruffyguy]

i did get a knock sensor code, im just on stock ecu, should i try changing out the sensors? also one of the clips fits on snug and the other can easily just be pulled off the sensor, so possibly the clip might be an issue?

[DustinZ]

Check for coil arc. Pull the coil cover when dark and start. Rev it and look for spark arc. Ive used flexane from grainger with good results and ive had guys with rbs use liquid tape (much cheaper) and have good results as well. Also check plug gap. I run 300zx tt oem plugs (heat range 6) gapped to about 32 and it helps blow out

Dustinz