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Strange Problem......

Plattsy

By Plattsy,
in Engines & Forced Induction

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Plattsy Grand Master

Plattsy

Posted
Posted

hey gents.....

i have an auto det 33' and im having a new issue. had a little look around but wouldn't even know how to search for it......

when i put my put down the car will accelerate like a bastard for about 2-3 seconds then the acceleration slows down dramatically but the engine revs keep increasing....... then a couple seconds later the acceleration kicks back in again.....its frigging weird man.....

its hard too explain....

now im running full stainless bell mouth to cat. (there is a small gap where air is escaping on the cat join. compliance cat to 3 inch fuji something or other back box.

i also have a metal intake pipe. here's where it gets interesting. ive re-routed my blow by piping shit to hit a catch can then vent to air thru a breather.

now Ive taken my recirc valve pipe work and made up a hose that joins to the metal intake pipe nipple, that was meant to be used for the blow by shit, to my recirc valve.

now i had my bov blocked off before but because the car is auto it was causing it to stall. could the recirculation be hitting the afm and causing the afm /ecu to shit its self and cut fueling?

any ideas gents......

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GTSBoy Grand Master

GTSBoy

Posted
Posted

The recirc valve's return to the turbo inlet should be pointing toward the turbo. If it is aimed straight in at 90° to the pipe, or towards the AFM, then you may have stalling, farting etc troubles. But it should not cause the mid-accel problem that you report.

What management, what boost?

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Plattsy Grand Master

Plattsy

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so you think its an ecu thing..... with the rb20 actuator stainless bellmouth r34 smic it could be hittin boost cut from over psi..... i dont know exactly how much cos im still on standard boost gauge.

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Plattsy Grand Master

Plattsy

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right.... now that was fine up until i did this... and doesnt the tourque convertor use the the recirculation pressure...... with me having a smaller hose on there could that be causing it...

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Plattsy Grand Master

Plattsy

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i have to the two breather pipes on the rockers connected via a t piece going to a catch can with a filter on the outlet of it. its just working as it normally would except the air isnt going into the inlet.......

don tget why i would have to block pcv.....

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Plattsy Grand Master

Plattsy

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yea ill chuck a pic up when i get a chance. cheers for all the input here fellas.

on another note the pcv only works on idle am i correct? so that wouldnt be causing this shit thats happening under accel....

im praying its not the torque converter. but im taking it to my auto guy in an hour so i guess ill find out!

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Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

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so just shove something in the hose on the pcv?

or just go to bunnings and buy a stool leg cap, and cover it, alternatively you could unscrew it and find a bolt the same thread and just bolt it up shut

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Plattsy Grand Master

Plattsy

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alright shittest drawing ever....... but this is basically how i have it set up..... no other way of doing it as my inlet pipe to turbo has only one connection (which i use for the bov)

i need to block the red pipe yes?post-70109-0-08603500-1349159619_thumb.jpeg

Edited by Plattsy
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