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Blow Off Valve Is Causing Car To Stall!

blitz r33
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blitz r33 Collaborator

blitz r33

Posted
Posted

i have bought a turbosmart type2 veeport bov and installed it on my skyline.

now my car keeps stalling and ive followed the instruction and tightened the spring but it still stalls,we have checked over it and theres no leaks,no blockages and no collapsed or twisted hose.

i got the spring as tight as it could go and it still stalled so i ended up taking it off and put the factory part back on and it runs perfect and doesnt stall and now i have wasted $400 on the adapter and bov.

im confused to why it stalls,hope yous can help me out.

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

The car is overfuelling due to the ATMO BOV.

The car expects the re-circ BOV to be there, its tuned for it.

Hence when you put it back it works fine.

So you have two choices.

Get a ECU & tune it ($1500)

Or go back to the stock one... which is is how Nissan intended it to be :D

Nothing wrong with the stock BOV so not really sure why you would want to change it anyhow.

blitz r33 Collaborator

blitz r33

Posted
  • Author
Posted
The car is overfuelling due to the ATMO BOV.

The car expects the re-circ BOV to be there, its tuned for it.

Hence when you put it back it works fine.

So you have two choices.

Get a ECU & tune it ($1500)

Or go back to the stock one... which is is how Nissan intended it to be :D

Nothing wrong with the stock BOV so not really sure why you would want to change it anyhow.

thanks for the info.

punisher6942 Rising Star

punisher6942

Posted
Posted

im having the same problem with my turbosmart BOV but i have set it up so its set to recirc and its still stalling i have no idea whats goin on with it and im looking at being in the same boat as blitz becuz im gunna have to put the stocker back on or get an aftermarket ecu and tune (better start saving lol)

Luciano Veteran

Luciano

Posted
Posted

installing a HKS Fuel Cut Defender should override this problem? i think.

i experienced the same with my Blitz. I didnt mind the stalling every now and then, but i removed it to avoid the boys in blue.

The stock one does its job well enough!

ssshonky Grand Master

ssshonky

Posted
Posted

as previously mentioned.. maybe investigate if you can adapt that BOV back to a plumb back .

also vac leaks can be quite hard to track down .. make sure you look for cracks at the places where other pipes join the inlet ( if there are any )

to be honest I was really impressed by the stock recirc valve on the rb25det NEO .. looked very well made! and at least if you have a recirc BOV the boys in blue have got one less thing to bend you over for !

and if you have a pod you should still hear the BOV noise.

ive heard alot of specualtion, but how much boost can a standard r32 gtst bov handle?

has anyone had a problem running 17-18 psi thru one?

im ready to put my stocka back on and see if it helps with the stalling..

adam-__- Grand Master

adam-__-

Posted
Posted
ive heard alot of specualtion, but how much boost can a standard r32 gtst bov handle?

has anyone had a problem running 17-18 psi thru one?

im ready to put my stocka back on and see if it helps with the stalling..

From what I've read on SAU, the standard 32 gtst bov can handle about 14psi before it starts to leak if I remember correctly. If you want to run the standard plumb back system, I think you can just get the GTR's bov and put it in its place. They handle up to about 20-ish psi.

Feel free to correct me.

R33silverS2 Mentor

R33silverS2

Posted
Posted

Its wierd mine has worked fine on the car and it has never stalled. Might change it back just cos it gets annoying sometimes. Did you make sure you used the gasket between the bov and the intake pipe?

  • 8 months later...
  • 16 years later...
silviaz Experienced

silviaz

Posted
Posted

My tuner told me this as well that the reason the car will stall is because it has a AFM system, he said it I want to do it properly I need to delete that system, he said I can try it though to see how it goes. My BOV recirculates btw (can hear flutter sometimes though), how do s15's and stuff not stall and they also have the AFM system? I was considering blocking it off for ovbious reasons but was hesistant because of the above.

silviaz Experienced

silviaz

Posted
Posted (edited)
1 minute ago, GTSBoy said:

By changing to a Halaltech and not having an AFM, typically. Or, they stall or otherwise carry on.

A lot of them are driven by p platers with stock ecu's lol. When does the stalling usually happen is it high speeds?

Edited by silviaz
joshuaho96 Veteran

joshuaho96

Posted
Posted
On 10/31/2024 at 10:12 AM, silviaz said:

My tuner told me this as well that the reason the car will stall is because it has a AFM system, he said it I want to do it properly I need to delete that system, he said I can try it though to see how it goes. My BOV recirculates btw (can hear flutter sometimes though), how do s15's and stuff not stall and they also have the AFM system? I was considering blocking it off for ovbious reasons but was hesistant because of the above.

If you block off the BOV entirely you will get reversion out of the MAF and get a lean spike instead of a rich spike as the MAF double-counts the airflow.

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