need help cant start RB25DET

[guricha]

Hi there!thas is my first post down here and am writing that hope to get any answer, i Have R33 With Rb25det car is series2, i start rebuilding it with top mount gate 38 mm, big turbo front mount plenum and so on, but problem is that when i finish the car i could not start it, actualy it starting but 400 rpm not more and when am trying accelerate it its swith of, i check the everything change sparks check the pump, maf but no metter what i do it have same problem... guys please suggest what to do, its generaly my second RB25 and i build the saem first time in technical aspects is everything ok but anyway ... i cant eve eat maybe somone knows what the problem is? when i remove the sparks also i realise that fuel is comming but no air, also i put big trottile body and but i left stock trottile body position sensor without changes

Please help guys or suggest anything:(

[Fibre guy]

Welcome to nico.Can you retype it so we can understand though?

Let me get this strait.... You have an r33 skyline, in Georgia.... And you where rebuilding it so it doesn't work any more?

[WhatsADSM]

I think he is from the Georgia in Europe... or is it Asia there?

[guricha]

Yes I am from Georgia , Europe or Asia we still doesn't decide that anyway after light modifications i could not start the car, engine doesn't rev after 400 rpm and when I try accelerate it engine goes down and switch off maybe anyone had similar problem ?i have checkedAFMFUELSPARKS

they are Ok, could it be problem of ECU?

[Fibre guy]

Did you check the o2 sensor?

[guricha]

i didnot connect it yet to down pipe but as i know it doesnot need to be connected engine can start up without it also or am i wrong?

[s14_sport]

Um...from what I can deduce....

You have an R33 skyline RB25DET series 2 that worked fine before adding some mods to it. correct?

You added a big turbo to the stock manifold and added a forward facing greddy-style intake manifold?? Along with that you must've changed your piping and most likely intercooler which adds more variables.

Now your car won't start.

Considering that you don't have your O2 sensor hooked up I think I'm making a correct assumption that there are other things you haven't hooked back up either.

Hook everything up please.Do a boost leak check, some of those couplers might be loose.Vaccuum lines all hooked up and back to theintake manifold?How about that air hose from the intercooler piping to your IAC? is that hooked up?

[Fibre guy]

The o2 sensor plays a big part in the idle. The car can run in a rough idle without the maf but it won't go over 2k rpm. The TPS, CAS, IACV, AAC, and o2 all need to be hooked up for the ecu to know whats going on.