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R33 Gts-t Stalling Under Load

zafeniak

By zafeniak,
in Engines & Forced Induction

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zafeniak Enthusiast

zafeniak

Posted
Posted

Hi guys,

I tried searching this topic but couldn't find any info. If once of you guys could send me a link regarding this topic that would be great.

Basically, everytime a accelerate, and let go of the clutch to change gears, the car will stall. The car idles and drives fine when I am not pushing it, but as soon as I give it a lottle, itll stall when changing gears.

The car is standard apart from me putting a pod filter on in and taking off the plumb back BOW system on it to get the flutter. Do you think it could be the flutter (compression surge) that could be casuing the problem? because the air exists the filter when the butterfly on the throttle body closes, would the Air flow meter be getting reverse readings (air going out)?

I seriously am puzzled, ive got heaps of mates with the same mod as me and there car doesnt stall, has anyone had the same problem or know of a solution?

cheers

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OMG-RLX Enthusiast

OMG-RLX

Posted
Posted

hey buddy that use 2 happen 2 my vl turbo man. with me it was the air flow meter. i changed it into the cooler piping and never stalled again. try use ur mates airflow meter and see if it happens. gud luck anywayz man

zafeniak Enthusiast

zafeniak

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  • Author
Posted
hey buddy that use 2 happen 2 my vl turbo man. with me it was the air flow meter. i changed it into the cooler piping and never stalled again. try use ur mates airflow meter and see if it happens. gud luck anywayz man

So it doesn't matter that you have the AFM in the cooler piping, does it get the same readings?

Can you put it anywhere in the cooler piping or does it have to be on a particular side?

cheers

OMG-RLX Enthusiast

OMG-RLX

Posted
Posted
So it doesn't matter that you have the AFM in the cooler piping, does it get the same readings?

Can you put it anywhere in the cooler piping or does it have to be on a particular side?

cheers

where ever ur airflow metre adapter cord can reach up 2 mate. dont do that just yet. u culd just have a crap afm

zafeniak Enthusiast

zafeniak

Posted
  • Author
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where ever ur airflow metre adapter cord can reach up 2 mate. dont do that just yet. u culd just have a crap afm

But by placing it in the cooler piping, wouldn't it be reading different air temps then it would in the standard position, and then adjust the timing?

Links Veteran

Links

Posted
Posted

I'm pretty sure it's because you've blocked off the blow-off valve, as your pushing it hard, the AFM sense's more air going past it, than when you let off the accelerator to change gears the engine thinks there's more air than there is (AFM assumes that it's running a plumbed back BOV), injects more fuel and stalls.. Atleast that's my thoughts, common on people who put atmo bov's on stock ECU's..

Are you running stock ECU? Try getting an aftermarket ECU, or plumb back in your BOV.. surprised search didn't find it.. SAFCII has ability to stop this from happening, same with any standalone ECU..

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Its due to taking off the BOV

Either pay for a FULL ECU and a tune (2k) or put the stock BOV back on (nothing wrong with it).

This is a highly common problem when people remove their BOV.

Please have a further search around mate as this is a regular topic that comes up

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