Oh God now I'm remembering. That's what I get for posting drunk!
Weird Noise From Bypass Valve after Turbo Inlet Install.
- Thread starter RichB
- Start date
Oh God now I'm remembering. That's what I get for posting drunk!
Thanks, I can do that.
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- 2011 Mustang GT
I'm running blue+2 on a MS CAI and Cobb TIP. I've been watching my numbers on my DH and I did notice an increase in boost pressure with teh TIP installed. I only get the 'turkey' noise when under light throttle and not a full boost build. Other than that, I've not seen any adverse effects.
Here's a thought: what if, with the BPV and free-flowing TIP installed, that the excess pressure could cause blow-by of oil past the turbo seals causing a light smoking at idle? I do know that blue+2 doesn't have as much vacuum at idle as blue+1 or blue alone...any thoughts?
Here's a thought: what if, with the BPV and free-flowing TIP installed, that the excess pressure could cause blow-by of oil past the turbo seals causing a light smoking at idle? I do know that blue+2 doesn't have as much vacuum at idle as blue+1 or blue alone...any thoughts?
I haven't seen any smoke at all while at IDLE.
Your assesment on when you hear the noise makes sense. Thats how I get the stock valve to make the noise. What I think is happening is the turbo is trying to push in more air than the engine needs and when the butterfly closes, you get the pressure spike causing the turkey gobble. I think the noise is from a rapid deceleration of the compressor.
Silver Ecstasy
Member
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- 11 MS3 Sport
Vacuum is a good thing at idle or off throttle right? Obviously as much as normally possible right?
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- 2011 Mustang GT
I have been experiencing a burnt smell and small tufts of smoke right as I get out of an idle situation and get on gas, even if I stay out of boost. The dealership can't seem to replicate the situation, and I'm not sure what the cause is, as I don't think the turbo is blown. I might try changing my spring combo to increase vacuum at idle and see if I can correct this problem. My next bet might be to get an oil catch can and a secondary PCV valve.
Silver Ecstasy
Member
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- 11 MS3 Sport
I think i'm going to start with the blue spring only when I get my Forge and see what my #'s look like. I'll have to start monitoring my stock vacuum #'s first.
mazdaspeedster3
Member
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- Mazdaspeed3. 2008
I dont have an inlet but Silver ectasy turned me on to this thread. I have been running blue w/2 since I got it. CWPspeed3 has been running just blue with no problems. I pulled the shims, cleaned and re-installed the BPV and notice the same thing as above. A little smoother through normal driving but no where near as viscious when you go WOT. I am going to try blue w/1 shim and see where that gets me. Maybe the happy medium is the place to be.
mazdaspeedster3
Member
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- Mazdaspeed3. 2008
I have also wondered if intakes plays into this combination as well... SRI vs CAI and Blue with ?? shims...
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- 2011 Mustang GT
I would think it would, as the air straightener/velocity stack that some intakes have would adjust your airflow, and even moreso if you have an inlet.
Silver Ecstasy
Member
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- 11 MS3 Sport
So Bill, when you pulled the forge for cleaning, you re-installed without shims? I thought about starting with yellow when mine comes in. Yellow+2, but maybe Blue should be the way to go.
So you're selling yours? Are you afraid of squirrels?
Yea, the noise wasn't worth it to me.
Yea, the noise wasn't worth it to me.
you didnt like your forge or your inlet?
I'm not a big fan of the inlet noise, but it doesn't bother everyone. I really want to know if the CP-E and the Metal inlets out in the market have this sound.
I loved my Forge by the way.
i have a metal inlet with a blue coupler at the turb connection. I get pretty loud noise from it, more air rushing by sound, kind of like a cold air intake effect, but amplified my mazdaspeed cold air intake sound.
Basically it makes the mazdaspeed intake louder, air rushing by metal, no muffler silicone sound i guess you could say, more tin sounding
squirrel? Ive never heard of such a thing, you mean like squeeking/chipmunk squirrel sounds???
its more of a tiny sound, not tiny like small but TINy like metal tin, air rushing by medal, like an intake on a civic. If you have a mazdaspeed cold air intake and or you've heard the sound it makes, its like that but amplified a bit more. So since i already have the mazdaspeed intake, its just a louder amplification of that when combined together.
I would think the silicone inlets would be more muffled sounding, the air would be quieter inside and not give that rushing sound
its more of a tiny sound, not tiny like small but TINy like metal tin, air rushing by medal, like an intake on a civic. If you have a mazdaspeed cold air intake and or you've heard the sound it makes, its like that but amplified a bit more. So since i already have the mazdaspeed intake, its just a louder amplification of that when combined together.
I would think the silicone inlets would be more muffled sounding, the air would be quieter inside and not give that rushing sound
