ZFR Turbo Flutter ?
Joined: 12-23-09
Posts: 12,643
Likes: 7
From: Mt. Pleasant S.C.
Oh, the other time I get that sound is my first two ***** in the morning, before the turbo housing has heated up to operating temp. The piston in the forge floats or something. Anyway, that's clearly the forge. You can test it if you still have your stock BPV.
I have the stock BPV that came with the turbo.
Senior Member
Joined: 02-09-09
Posts: 4,374
Likes: 5
From: Tejas
For those people with the ZFR: What hot side charge pipe are you using?
ZZP sells a hotside pipe that works, but it uses the stock rubbery couplers, which I'm not sure I'm comfortable with when you start turning up boost. Injen sells a hotside that may work with the 5" long, 2" diameter coupler you can buy with the ZFR.
The problem I face is that I've got 2.5" pipes, and neither the bend coupler for use with ZZP's pipe, nor the 2" diameter coupler they offer will work.
Ideas?
ZZP sells a hotside pipe that works, but it uses the stock rubbery couplers, which I'm not sure I'm comfortable with when you start turning up boost. Injen sells a hotside that may work with the 5" long, 2" diameter coupler you can buy with the ZFR.
The problem I face is that I've got 2.5" pipes, and neither the bend coupler for use with ZZP's pipe, nor the 2" diameter coupler they offer will work.
Ideas?
Senior Member
Joined: 02-09-09
Posts: 4,374
Likes: 5
From: Tejas
The ZZP hotside pipe appears to be an incomplete pipe on its own, utilizing the rubber tube ends from your stock hotside pipe to complete it. Those rubber tubes inflate and expand like balloons. We went to hardpipes for a reason. It seems like it just opens yourself up for more liability of popping the tubing or getting a tear in one and then you're SOL. I'm not interested in doing a roadtrip or something and having a boost leak I can't fix. :/
Did ZZP use that rubber tubing on their high boost applications? It appears to be 2 ply.
Last edited by Stamina; Mar 13, 2013 at 02:21 PM.
Senior Member
Joined: 08-06-08
Posts: 3,405
Likes: 7
From: Federal Way
So I had the ZFR installed over the past weekend, Turbo was primed and broken in and has over 600 miles on it now " Turbo is brand new "
Everything is installed properly, and I don't have any vacuum leaks, everything was retorqued after a couple hundred miles. Car is currently running on a base tune and the max psi the turbo is pushing is 12 psi for the moment till next week.
Every time I get on it and let off the gas WOT the turbo flutters, or so it sounds like it, on the oem turbo I got a single psssss noise when I shift WOT now I get a fluttering noise, kind of like a sequential BOV.
Is this normal since the car isn't fully tuned yet ? Do I have a sticky BPV or you think the vacuum line is bad or what ?
The Fluttering sounds like this except it happens at WOT shifts and I am pretty sure its not compressor surge lol
cobalt ss 2008 Turbo flutter problem - YouTube
Everything is installed properly, and I don't have any vacuum leaks, everything was retorqued after a couple hundred miles. Car is currently running on a base tune and the max psi the turbo is pushing is 12 psi for the moment till next week.
Every time I get on it and let off the gas WOT the turbo flutters, or so it sounds like it, on the oem turbo I got a single psssss noise when I shift WOT now I get a fluttering noise, kind of like a sequential BOV.
Is this normal since the car isn't fully tuned yet ? Do I have a sticky BPV or you think the vacuum line is bad or what ?
The Fluttering sounds like this except it happens at WOT shifts and I am pretty sure its not compressor surge lol
cobalt ss 2008 Turbo flutter problem - YouTube
And what about my post made you think that I was suggesting there was something wrong with his turbo?
It's the BPV obviously. May be no big deal though. Has anyone tried to hook it directly to the IM vs hooking it up through that solenoid that the stock one runs off of?
It's the BPV obviously. May be no big deal though. Has anyone tried to hook it directly to the IM vs hooking it up through that solenoid that the stock one runs off of?
Last edited by alerosaint; Mar 19, 2013 at 10:04 PM.
New Member
Joined: 03-13-13
Posts: 104
Likes: 0
From: northwest indiana
i just installed my zfr today and on my way home playing with the boost a little i hear a funny noise
at part throttle from 1-5 psi i hear like a high pitch wistle kinda like a dog whistle
i get on it harder i cant hear it any more
only makes the noise under boost no cel drives perfect pulls supper hard
i dont kno if its a boost leak as i havent tested it yet but wondering if it was
possibly the bpv partially opening at part throttle or if mayb its coming from that nipple on the waste gate solenoid that isnt hooked up to anything other than that i dont under stand how i could have a boost leaks as there isnt much that hooks up the this turbo
or mayb its how it sound from the air rushing threw the pipes at low pressure i dont kno just thought id see what u guys think
at part throttle from 1-5 psi i hear like a high pitch wistle kinda like a dog whistle
i get on it harder i cant hear it any more
only makes the noise under boost no cel drives perfect pulls supper hard
i dont kno if its a boost leak as i havent tested it yet but wondering if it was
possibly the bpv partially opening at part throttle or if mayb its coming from that nipple on the waste gate solenoid that isnt hooked up to anything other than that i dont under stand how i could have a boost leaks as there isnt much that hooks up the this turbo
or mayb its how it sound from the air rushing threw the pipes at low pressure i dont kno just thought id see what u guys think
Senior Member
Joined: 02-09-09
Posts: 4,374
Likes: 5
From: Tejas
i just installed my zfr today and on my way home playing with the boost a little i hear a funny noise
at part throttle from 1-5 psi i hear like a high pitch wistle kinda like a dog whistle
i get on it harder i cant hear it any more
only makes the noise under boost no cel drives perfect pulls supper hard
i dont kno if its a boost leak as i havent tested it yet but wondering if it was
possibly the bpv partially opening at part throttle or if mayb its coming from that nipple on the waste gate solenoid that isnt hooked up to anything other than that i dont under stand how i could have a boost leaks as there isnt much that hooks up the this turbo
or mayb its how it sound from the air rushing threw the pipes at low pressure i dont kno just thought id see what u guys think
at part throttle from 1-5 psi i hear like a high pitch wistle kinda like a dog whistle
i get on it harder i cant hear it any more
only makes the noise under boost no cel drives perfect pulls supper hard
i dont kno if its a boost leak as i havent tested it yet but wondering if it was
possibly the bpv partially opening at part throttle or if mayb its coming from that nipple on the waste gate solenoid that isnt hooked up to anything other than that i dont under stand how i could have a boost leaks as there isnt much that hooks up the this turbo
or mayb its how it sound from the air rushing threw the pipes at low pressure i dont kno just thought id see what u guys think
I put the stock Airbox back on...Goodbye all sounds even the bpv sound is not noticeable anymore....Hello sleeper mode haha
New Member
Joined: 03-13-13
Posts: 104
Likes: 0
From: northwest indiana
i perfomed the boost leak leak test this morning
and of course its leaking from something i didnt touch
its leaking from the inlet sensor where it mounts to the lower intercooler pipe to the intake manifold
does any one offer a aftermarket gasket for this sensor
only way i can find the gasket is to order the whole sensor
and of course its leaking from something i didnt touch
its leaking from the inlet sensor where it mounts to the lower intercooler pipe to the intake manifold
does any one offer a aftermarket gasket for this sensor
only way i can find the gasket is to order the whole sensor
