None standard blow off valve danger.

nacelp nacelp at bright.net
Fri Apr 28 04:13:09 GMT 2000


I would like not to care where to vent it.  Seems like a simple logic devise
using TPS, and a solenoid to control the BOV, then do an injector cut off.
That way you could feather the gas to keep some EGT.
Grumpy


> I just turbocharged a non-turbo car.  In the process,
> I added a blowoff valve.  Initially I had it venting
> to atmosphere. The ECU is hotwire MAF based and this
> caused some problems with stalling on decel, and overly
> lean on initial accel since the BOV would open slightly
> and allow unmetered air to enter.  Plumbing the BOV
> outlet between the MAF and turbo inlet solved the
> problems completely.  It's a joy to drive again.
> I will always plumb BOV's into the intake from now on.
> Just makes good sense.
> <<An oscilloscope on the O2 sensors confirmed what was happening.>>
> Hmmm, since you already have a setup using a 'scope to
> read your O2 sensors, would you mind posting the waveform
> difference between the pre-cat O2 and post-cat O2 sensors?
> TIA,
> -Mike


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