Re: BOV & PMS
#168969
May 16, 2000 04:14 pm UTC
May 16, 2000 04:14 pm UTC
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Joined: Mar 1999
Posts: 80 T.O.
Josh Leung
Member
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Member
Joined: Mar 1999
Posts: 80
T.O.
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I am not 100% sure, so someone may need to correct me. The Blitz Blow-off is like many other valves, where it uses a spring in addition to boost on the diaphram side to keep the valve closed. When you let off or idle, there is vacuum present on the diaphram which will cause the car to hesitate or stall because the valve may be partially open. The HKS SSBOV works the opposite of this, the whole valve assembly is backwards. When the car is under boost, instead of boost working against the valve it is actually working for it, forcing it to close, and at idle, the vacuum does not pull the valve open.
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Re: BOV & PMS
#168970
May 16, 2000 10:49 pm UTC
May 16, 2000 10:49 pm UTC
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Joined: Jun 1999
Posts: 454 Toronto,Ontario,Canada
Alex Schulz
Serious Member
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Serious Member
Joined: Jun 1999
Posts: 454
Toronto,Ontario,Canada
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Hmm, I do have the Blitz Blow-off valve, and it is sequential. I've had not problems during shifting, but I did have the same problems at idle and at low rpm's.
I've since cured it by adjusting the fuel at idle to -10%, and as for the "bogginess" at low rpms, I set the accel snd to 2, and accel recv to 20. (Both in menu 900)
From what I've learned, I dont think that it is the BOV that gives the bogginess when using the PMS. It is the larger MAF that was meant for a V8, as opposed to our cars. The stock ecu is not compensating for, and that the PMS cannot adjust for at low rpm's. If you have an old PMS, there will be no accell feature in menu 900 as that was added after the first production. In that case, send it back and they will upgrade the chipset. If you do, fool around with the accel features, but 2/20 seems to be the best setting...
Try that, see if it works for you...
[This message has been edited by Alex Schulz (edited May 16, 2000).]
92 Talon Tsi AWD Cracking pistons and blowing rods! Ze one wiz ze big wing
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Re: BOV & PMS
#168972
May 17, 2000 01:22 am UTC
May 17, 2000 01:22 am UTC
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Joined: Dec 1998
Posts: 961 Regina, SK Canada
Dan Aho
Serious Member
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Serious Member
Joined: Dec 1998
Posts: 961
Regina, SK Canada
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What I'm wondering is why no one has tried mounting the mass air meter AFTER the blow off valve. This would make everything so easy. The VPC is normally tapped into the TBE, why not stick a modded MAS in right before the TBE? That way you could have the BOV vented to the atmosphere with no problems and even a 3" cold air inlet from the stock I/C location (if you have a FMIC) and still retain the stock metering system. You could even run the turbo open-air on the track (no filter). The only defect I could see would be creating the mount for the honeycombs in the upper intercooler pipe. Anyone have any ideas why this wouldn't work?
------------------ 1992 Eagle Talon TSi AWD BOOSTN on the flatlands
BOOSTN since 1998
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