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Old 08-09-2007, 06:09 PM   #18
flycaster
Scooby Specialist
 
Member#: 60142
Join Date: Apr 2004
Location: Bend, OR
Vehicle:
2011 WRX
Grey

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Mod, I'm sure Crawford has their opinions about this, but imo a big turbo kit with NO BOV/BPV to vent throttle lift surge pressure is a very, very bad idea, especially for a street car. In my car if the BPV is even slightly tight, light throttle lift surge bucking becomes pronounced and gets worse with altitude gain as the vacuum drops. Frankly, I can't imagine what this will be like with that kit, not to mention the potential damage done to the turbo vanes and shafts as that pressure wave slams into them when the throttle plate shuts, or the loss in spool as the pressure waves stall the compressor wheel. It sure seems like a lose-lose deal to me.

I strongly disagree with this exclusion, and I can't think of another single kit made for any turbo'd street car that has no dedicated purge. But it's Crawford's kit, and that's what they believe is the best "solution": zero charge pipe venting, other than back out the front of the turbo compressor.

I'm not trying to crap on anyone, or pick any fights. This is just my $0.02. Other than this, the kit looks superb; but this exclusion is, as I've already said, astonishing to me.
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