Turbosmart BPV issues - Any comments/suggestions?

[MPS 250 PLUS]

Hey guys

I've had the Turbosmart Dual Port BPV fitted for about 18 months. I have it half recirc and half vent to air. The car was in for service last week and had the air filter changed.

Since I picked the car up, I've noticed something strange that I would like some comments on - The BPV seems to vent twice in quick succession when you change gears or lift off at mid or full throttle. If I remember rightly, it only vented once before.

I think the workshop have tightened the BPV spring tension when it was in there?
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Just to ad to that so you know what I mean, rather than making one big Pssssht sound at each gear change, it is going psssht psssht.

Does anyone know if this means it is overtensioned?

[MattMPS3]

Sounds like just a little bit of valve flutter to me, could be the spring tension, maybe just double check that the vac hose isnt kinked or deformed in a way that may be causing blockage.

[MPS 250 PLUS]

Sounds like just a little bit of valve flutter to me, could be the spring tension, maybe just double check that the vac hose isnt kinked or deformed in a way that may be causing blockage.

Will do. Thanks for the input.

[EQ]

out of interest - do you find any difference with the hybrid bov apart from the noise?

I dashhawked mine and found zero difference bewteen the stocker and the aftermarket.

I agree they look nice under the hood....

[Jmac]

Mine felt like it built boost a little earlier, though ive got nothing to prove it.

[MPS 250 PLUS]

Yeah, no real difference. I think the Pssht makes it feel faster!

[TUFMPS]

I think it goes worse with the turbosmart bpv.. mostly just the flat feeling i used to get every gear change, but the unburnt fuel going off in the exhaust makes for an awesome sounding change.

[SydRuss]

I've heard that factory BOV's leak air, and with the aftermarket ones you do feel the improvement. But you are saying that there is no difference at all?

[Doug_MPS6]

If you're burning fuel in the pipes and backfiring, you might need to tighten up the the setting a bit. That raw fuel is washing lube off your cylinder walls too. Check all the other posts / threads on this issue.

[3MPSPWR]

I've got a HKS SSQV 3 fitted on my Gen 2 and i've noticed that boost seems to come on earlier with SRI and TIP, also i've noticed that before i had all the parts on during 2nd gear the boost starts to die down after going past like 4.5k, now it holds full boost right up till 6k. So i reckon its probably holding boost alittle betta than the stocka..