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Old 12-07-2013, 08:47 PM
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Diamond eye exhaust

I just installed a 4" diamond eye turbo back straight pipe on my 99, and for about 5 minutes of driving there is a sound coming from the engine. It sounds like a droned out vacuum. After five minutes the sound goes away.

Any ideas what this could be? I checked for leaks when in ideal and can't find any...
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Old 12-07-2013, 09:00 PM
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This is a shot in the dark, but is your EBPV acting up? broken tube or anything like that? because it may have been something that you never noticed before because of the stock exhaust. is there any loss of power associated with it?
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Old 12-08-2013, 03:28 AM
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Most likely the EBPV. You could watch the actuator until the sound goes away to confirm.

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Old 12-08-2013, 06:23 AM
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i second the ebpv.

how cold is it where you live?

the jet sound is just the ebpv closing creating load to help warm up the engine.
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Old 12-08-2013, 07:15 AM
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If you hear it, go in and pull the plug while its running to see if it goes away. Just be careful not to snag your hand on the belt. I had the issue (I broke the ebp tube off of the sensor a while back and crimped the end shut) and when I pulled the plug, the problem stopped. It'll throw a code but it won't set off the CEL.
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Old 12-08-2013, 11:39 AM
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dfuser makes a plug that will eliminate it and make the computer not throw a code.
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Old 12-08-2013, 05:57 PM
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Quote:
Originally Posted by blue99stroker View Post
i second the ebpv.

how cold is it where you live?

the jet sound is just the ebpv closing creating load to help warm up the engine.
The jet sound is while it's idling warming up, which I understand is normal, the sound it makes is when I'm actually driving it.
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Old 12-09-2013, 06:44 AM
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how do you like the exhaust? im debating on getting the diamond eye or the mbrp
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