Prob. #2 S240sx SR swap

Heres the problem , now the engine is in, everything is working exept left flasher , engine starts and run very well also , BUT it is hiddling at 2000 RPM and there is no way to go over 3000RPM , it becomes to buck so hard sometimes it looks like a cut off , and also there is no way to get it boosting , when the gauge gets to 0.00000000000000000000000001 psi the engine bucks , we checked vaccum , wires are okay , tryed with timing , tryed to find any leak from the fmic , tryed so many things but nothing worked , i know we have a bizarre thing looking like an anti-pollution or something located over the headers , theres is one hose not plugged but we didnt pray attention cause i didnt have it on my car. You guys think this could be the reason of the shit ? or what ever could it be ?

look you mass air flow

usualy when it goes in safe mode aka under 3000 rpm its the mass air flow.

But still under 3000 if i try to get it boosting a bit it fails

Try a friends Maf.

its not the maf we tried it and nothing changed

does it do the same problem without the maf plugged in. did u extend the maf wire ? if so check the wiring. did you check the codes? did u do the wiring by the fr light and by under the dash?

and rip the pos thing above the manifold its useless is the bov stuck open?\

Thx for that stuff were gonna check this out

ECU codes say its the MAF , and the problem stays the same when we remove the MAF so , it is clearly the trouble but evemn after having remade the all wiring of the MAF with new wires engine still runs too rich , WTF ?!?!

told you so

multimeter time. check your connections from the ecu pins till the maf.

Oh and is the ecu pluged in all the way? I did that once.

gonna check it ouy thx dude

WorkInProgressSI said:

Oh and is the ecu pluged in all the way? I did that once.

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Check ça parce que ca m'est aussi arrivé récemment... ça faisait quelque temps que je roulais mon char sans problèmes... mais sans trop le battre... pis y s'est mis à bucker après quelques tours à ICar... c'était simplement l'ordi qui n'était pas branché à fond!!