Funny noise coming from turbo
08-30-06, 01:03 PM
#1
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Funny noise coming from turbo
I have a problem the boost out of my stock twins and i wanted to see if you could help me. The boost on the first turbo is fine and hold nice at 10psi but after 4.5k when the second turbo comes on the boost will go down to about 5psi and by redline there is no boost at all. and if i boost it past 4.5k and let off the turbo will make a lound funny noise. My mods are cat-back and intank.
Thanks Mark T
Thanks Mark T
08-30-06, 01:26 PM
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Be sure to look at your check valves and make sure they're not busted. My FD was is doing the exact same thing. Looked at a hose diagram and found out that the check valve between the Y-pipe and the pressure chamber was completely busted. As soon as I get my check valves and install it, I'll let you know if it fixed my problem
08-30-06, 01:47 PM
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Originally Posted by DMoneyRX-7
start checking vauum hoses. that loud noise is probably your stock BOV
Last edited by mark1rx7; 08-30-06 at 01:50 PM.
08-30-06, 01:52 PM
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Check the big hoses first... if no luck:
there is a sticky here with the whole sequential system. I has all of the vacuum hoses, solenoids, valves, everything. Use that in combination with the worshop manual (it is also a sticky) and start trouble shooting. I think that you most likely find a cracked hose or something.
there is a sticky here with the whole sequential system. I has all of the vacuum hoses, solenoids, valves, everything. Use that in combination with the worshop manual (it is also a sticky) and start trouble shooting. I think that you most likely find a cracked hose or something.
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08-31-06, 08:50 AM
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Originally Posted by mad_7tist
the crv is not closing when the ccv opens after 4500. all the boost is prob going out the crv. check the hose going to it.
08-31-06, 12:12 PM
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If it was your factory BOV you would'nt have primary boost either. Like said above check your CRV to make sure it' closing or even the hose from the y-pipe to the CRV. You'll most likely find the hose from the y-pipe to CRV split.
