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I hear a "tweet" when shifting hard at high rpm (More)

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Old 06-08-2002, 10:26 PM
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Default I hear a "tweet" when shifting hard at high rpm (More)
1am. Stoplight near house, next to elevated highway. Windows down to listen to new exhaust bounce against wall.

Nice launch at 2500, shift 1-2 pretty close to readline, fast but accurate. No tire chirps, or course, but an audible "tweet". Same at 2-3 shift.

Is it the BPV? The waste gate? Something in the driveline? Just wondering
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Old 06-09-2002, 07:18 AM
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Default tweet during shift? my guess is BPV
They are prone to tweeting and they do come into play when shifting.
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Old 06-09-2002, 07:38 AM
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As I thought. The car is running great (knock on wood)
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Old 06-09-2002, 09:25 AM
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Default Yea, BOV? Tweet? Looks and sounds like a maryjawanda thing to me.
<img src="http://www.turbosmart.com.au/images/product/bov-003ss-a.jpg">
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Old 06-09-2002, 09:38 AM
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420 dude!
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Old 06-09-2002, 09:51 AM
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Mine used to do that, hasn't done it since I got the Hyperboost valves
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Old 06-09-2002, 10:51 AM
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Its your by pass valves, Steve hit it right on the mark. I used to call it a "honking" sound.
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Old 06-09-2002, 11:27 AM
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Default I figured you would know. All those 1/4 mile runs. Oh and....
HOOK EM!!!
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Old 06-09-2002, 12:14 PM
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Hogs have to beat Clemson today to reach the World Series(Baseball)
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Old 06-09-2002, 12:18 PM
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My Horns too! Playing Houston today
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