GMPP Intake for GXP/Redline installed, making a weird noise

Lithium Lotus · 06-14-2008, 07:00 PM

I just had the GMPP intake for the GXP installed, and it's making a weird sound. It's not the sucking sound of an intake, the clicking of the injectors, or the bov whistle. When I accelerate moderatly and let off, a noticable "chug" type sound is heard right before you hear the bov. I'm not the only one hearing this noise. This post talks about it a little bit. GMPP Intake, odd noise? Need help. - Pontiac Solstice Forum

Is anyone else experiencing this weird noise with the GMPP intake on the turbo models?

german gt · 06-15-2008, 10:27 AM

Quote:

Originally Posted by Lithium Lotus

Is anyone else experiencing this weird noise with the GMPP intake on the turbo models?

What you hear is the BOV - that's the normal sound of turbo with a cai!

Lithium Lotus · 06-15-2008, 10:45 AM

It's not the bov I'm hearing, because it didn't make that sound before the gmpp intake. The sound can be heard a split second before the bov whistle.

german gt · 06-15-2008, 01:17 PM

With the stock intake, you can't here the opening of the BOV.

With the cai you can. chuck and a millisecond after this you hear the wistle...

It's the same, when you just remove the stock airfilter or open the airfilter box. then you csn here the chuck. If everything is closed you qwon't.

**ceeker** · 06-15-2008, 01:54 PM

Yes it is the CBV valve (BOV) you just didn't hear the complete sound it makes before, now you can! Not to worry completely normal, you'll grow to love this sound. Thought it was strange at first but now it's awsome!

I have the Dejon intake and love it!

Mandi · 06-22-2008, 10:57 AM

I thought it was a bypass valve???

**ceeker** · 06-22-2008, 11:01 AM

Quote:

Originally Posted by Mandi

I thought it was a bypass valve???

Yes CBV, compressor bypass valve.

LeadSled1 · 06-25-2008, 11:14 PM

Hey, that was my post over there.

I've determined it is the CBV (bypass valve) chattering. It seems to bounce a little when it activates.

From what I understand, the Audis (R4 and R6) use the same K04 type turbo with different impeller wheels and they get a similar noise.

Bogie · 06-29-2008, 11:23 PM

If I don't have radio on, I hear the CBV on stock vehicle all the time. Not loud. But perceptible.

06-14-2008, 07:00 PM	#1 (permalink)
Lithium Lotus Senior Member Join Date: Aug 2007 Location: Youngstown, Ohio Posts: 115 My Photos: (0)	GMPP Intake for GXP/Redline installed, making a weird noise I just had the GMPP intake for the GXP installed, and it's making a weird sound. It's not the sucking sound of an intake, the clicking of the injectors, or the bov whistle. When I accelerate moderatly and let off, a noticable "chug" type sound is heard right before you hear the bov. I'm not the only one hearing this noise. This post talks about it a little bit. GMPP Intake, odd noise? Need help. - Pontiac Solstice Forum Is anyone else experiencing this weird noise with the GMPP intake on the turbo models? __________________ 2007 Solstice GXP "Natsumi" Japanese female name that translates to Summer Beauty.

06-15-2008, 10:45 AM	#3 (permalink)
Lithium Lotus Senior Member Join Date: Aug 2007 Location: Youngstown, Ohio Posts: 115 My Photos: (0)	It's not the bov I'm hearing, because it didn't make that sound before the gmpp intake. The sound can be heard a split second before the bov whistle. __________________ 2007 Solstice GXP "Natsumi" Japanese female name that translates to Summer Beauty.

06-15-2008, 01:17 PM	#4 (permalink)
german gt Member Join Date: Jul 2007 Posts: 60 My Photos: (0)	With the stock intake, you can't here the opening of the BOV. With the cai you can. chuck and a millisecond after this you hear the wistle... It's the same, when you just remove the stock airfilter or open the airfilter box. then you csn here the chuck. If everything is closed you qwon't. __________________ Opel GT 2.0 Turbo onyx black, leather red/black, 20" Tomason rims, Eibach pro springs, bsr, Windstop, Inox GT-Badges, Wategate/Solenoid mod

06-15-2008, 01:54 PM	#5 (permalink)
ceeker Senior Member Join Date: Aug 2007 Location: Utah Posts: 561 My Photos: (16)	Yes it is the CBV valve (BOV) you just didn't hear the complete sound it makes before, now you can! Not to worry completely normal, you'll grow to love this sound. Thought it was strange at first but now it's awsome! I have the Dejon intake and love it! __________________ Silver/RL 2007 - Black Top - Red/Black Leather 5th Break Light, DeJon CAI, IC Pipes Magnaflow, Opel Badges, tail lights. Hahn Intercooler, Westers Tune

06-22-2008, 10:57 AM	#6 (permalink)
Mandi Member Join Date: Nov 2007 Location: Elkhart, Iowa Posts: 71 My Photos: (0)	I thought it was a bypass valve??? __________________ -2007 Saturn Sky Redline M/T #03989, Built 6/30/6

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06-25-2008, 11:14 PM	#8 (permalink)
LeadSled1 Member Join Date: May 2008 Posts: 46 My Photos: (0)	Hey, that was my post over there. I've determined it is the CBV (bypass valve) chattering. It seems to bounce a little when it activates. From what I understand, the Audis (R4 and R6) use the same K04 type turbo with different impeller wheels and they get a similar noise.

06-29-2008, 11:23 PM	#9 (permalink)
Bogie Senior Member Join Date: Aug 2007 Location: Northern, VA Posts: 2,476 My Photos: (0)	If I don't have radio on, I hear the CBV on stock vehicle all the time. Not loud. But perceptible. __________________ 2008 Redline Black Onyx Black/Red Leather Monsoon 6 Disc Spoiler French Transmission Born July 2007 Snagged 8/31/07 Belle? That's my car Alizée? That's my avatar Me? Forty something male skydriver

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