Strange Problem......

[Plattsy]

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......

[GTSBoy]

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?

[gotRICE?]

Id be leaning towards RnR from that description. The BOV setup wont be the cause.

[Plattsy]

rb20 actuator stock ecu although i will have plumbed in safc by saturday.

see i thought it was traditional misfire by way of coilpacks but im really not sure.....

[Plattsy]

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.

[Plattsy]

also......... i havent reset the ecu since any of these upgrades...

[Crans]

stuffed tourque converter

[Plattsy]

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...

[Dose Pipe Sutututu]

have you blocked your PCV?

I see that you're cam cover is now breathing to atmosphere. You will need to shut off the PCV

[Plattsy]

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.....

[GTSBoy]

You need to have a think about how PCV works then.

[Dose Pipe Sutututu]

On idle, your plenum is sucking in air that is not accounted for in the system.. i.e.

it's sucking

atmosphere --> catch can --> hoses --> t-piece --> cam cover --> PCV

[DVS JEZ]

Post a pic of ur engine bay. I can see what the guys are saying but need to see it first

[Plattsy]

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!

[WMDC35]

try blocking the pcv as mentioned, don't worry about getting it

[Plattsy]

so just shove something in the hose on the pcv?

[Dose Pipe Sutututu]

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

[Plattsy]

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?

Edited October 2, 2012 by Plattsy

[Plattsy]

try again.

[WMDC35]

yeah, give it a try, even if not the cause of this problem should still be done