[Tkent818]

Long story but due to a warranty situation and coming into some money, I was able to install Vargas stage 2+ turbos, 2" inlets and outlets, catless downpipes, 7.5" stepped intercooler, stage 2 lpfp(single walbro 450), DCI, and chargepipe was already installed with stock DV's venting to atmosphere. I have Ken at Wedge doing a 91 and e30 tune, which were in the base map of both. I put the tune on and was trying to get some logs when I heard what's in the video. The turbos have probably 400 miles max on them as well as all the other mods except the chargepipe and DV's. It does smell hot when parking and I've smelled a little burnt oil when turning on A/C. This noise just started 2 days ago and I only picked up the car a week ago. Is it possible the DV's are worn out? I can't believe the turbos are wearing out already, is that possible? I'll try to attach the last log. It only happens under 100% throttle, car cold or warmed up

https://photos.app.goo.gl/i7e6cVkgj2KU77dA8

[mweisdorfer]

Originally Posted by Tkent818

Long story but due to a warranty situation and coming into some money, I was able to install Vargas stage 2+ turbos, 2" inlets and outlets, catless downpipes, 7.5" stepped intercooler, stage 2 lpfp(single walbro 450), DCI, and chargepipe was already installed with stock DV's venting to atmosphere. I have Ken at Wedge doing a 91 and e30 tune, which were in the base map of both. I put the tune on and was trying to get some logs when I heard what's in the video. The turbos have probably 400 miles max on them as well as all the other mods except the chargepipe and DV's. It does smell hot when parking and I've smelled a little burnt oil when turning on A/C. This noise just started 2 days ago and I only picked up the car a week ago. Is it possible the DV's are worn out? I can't believe the turbos are wearing out already, is that possible? I'll try to attach the last log. It only happens under 100% throttle, car cold or warmed up

https://photos.app.goo.gl/i7e6cVkgj2KU77dA8

Are you running stock DV's?

Did you prime the turbos before starting the engine upon install?

[Tkent818]

Originally Posted by mweisdorfer

Are you running stock DV's?

Did you prime the turbos before starting the engine upon install?

I am running stock DV's and the install was done at Ikonic Auto in North Hollywood. They've done a ton of turbos and all the specialize in is BMW. I asked if they were gonna prime and they said yes. If it was the turbo, wouldn't it be making that noise at all RPM? Not just 100% throttle?

[Saif2018]

Originally Posted by Tkent818

I am running stock DV's and the install was done at Ikonic Auto in North Hollywood. They've done a ton of turbos and all the specialize in is BMW. I asked if they were gonna prime and they said yes. If it was the turbo, wouldn't it be making that noise at all RPM? Not just 100% throttle?

This is the first time I heard almost new stage 2 turbos making such a noise, even if they are Vargas ones 🤦

Just checked your video, it's not a siren noise at least.

Not sure if Stock DV can handle much more than 20psi, how much boost you running?

Assuming you checked the DV connections. Mine has the siren in the video but it's fainter, stock turbos on their way out.

[Tkent818]

Originally Posted by Saif2018

This is the first time I heard stage 2 turbos making such a noise, even if they are Vargas ones 🤦

Just checked your video, it's not a siren noise at least.

Not sure if Stock DV can handle much more than 20psi, how much boost you running?

Assuming you checked the DV connections. Mine has the siren in the video but it's fainter, stock turbos on their way out.

Right now Ken has me on a 91ACN tune pushing about 17psi. It's just weird it's only at WOT and never any other time. I had a buddy rev it in park and you can't hear it, so maybe only WOT under load. I'm not sure what to do, Ken sent back the first revision and he said he only made a minor adjustment cause everything looks good. I guess drivability isn't really suffering

[BSM n54iS]

Can you pinpoint the location where it's coming from? Almost sounds like an electrical siren I haven't heard that before

[Tkent818]

Originally Posted by BdSM n54iS

Can you pinpoint the location where it's coming from? Almost sounds like an electrical siren I haven't heard that before

I agree it does sound somewhat electric, like I said, I had a buddy rev it while in park and I couldn't replicate it. Everything sounded normal unless WOT under load. I guess I'll have to go to the shop on Monday and let them hear it. Are we pretty sure it's not the turbos though?

[_N54]

I wouldn't be surprised if its the fuckboi VTT turbos. Keep us posted.

[Torgus]

Originally Posted by _N54

I wouldn't be surprised if its the fuckboi VTT turbos. Keep us posted.

[Rule1977]

Originally Posted by Tkent818

Long story but due to a warranty situation and coming into some money, I was able to install Vargas stage 2+ turbos, 2" inlets and outlets, catless downpipes, 7.5" stepped intercooler, stage 2 lpfp(single walbro 450), DCI, and chargepipe was already installed with stock DV's venting to atmosphere. I have Ken at Wedge doing a 91 and e30 tune, which were in the base map of both. I put the tune on and was trying to get some logs when I heard what's in the video. The turbos have probably 400 miles max on them as well as all the other mods except the chargepipe and DV's. It does smell hot when parking and I've smelled a little burnt oil when turning on A/C. This noise just started 2 days ago and I only picked up the car a week ago. Is it possible the DV's are worn out? I can't believe the turbos are wearing out already, is that possible? I'll try to attach the last log. It only happens under 100% throttle, car cold or warmed up

https://photos.app.goo.gl/i7e6cVkgj2KU77dA8

It's most likely the drop shipped Chinese turbos VTT sold you. Do yourself a favor and call Rob at RB Turbo and get a set of turbos that you won't have to worry about.

[cruizinmax]

It sounds like a boost leak to me. Not sure why everyone is immediately jumping to replacing turbos. 🙄

[Saif2018]

Originally Posted by cruizinmax

It sounds like a boost leak to me. Not sure why everyone is immediately jumping to replacing turbos. 🙄

Well VTT has a terrible reputation for a reason, OP did not post a log, a boost leak is usually visible on a log.

[Tkent818]

Originally Posted by Saif2018

Well VTT has a terrible reputation for a reason, OP did not post a log, a boost leak is usually visible on a log.

https://datazap.me/u/tkent818/e40-log?log=0&data=3-21

[Saif2018]

Originally Posted by Tkent818

https://datazap.me/u/tkent818/e40-log?log=0&data=3-21

Your WGDC is around 55% max which seems fine, but your only hitting around 15psi, about 3psi off boost target. Doesn't look like a boost leak, as I'd expect WGDC to climb rapidly to try and meet targets.

No harm checking running a smoke test. I've got a feeling the turbo's faulty or Wastegates not closing properly to build boost.

[Tkent818]

Originally Posted by Saif2018

Your WGDC is around 55% max which seems fine, but your only hitting around 15psi, about 3psi off boost target. Doesn't look like a boost leak, as I'd expect WGDC to climb rapidly to try and meet targets.

No harm checking running a smoke test. I've got a feeling the turbo's faulty or Wastegates not closing properly to build boost.

https://datazap.me/u/tkent818/91acn?log=0&data=3-21

This is a 91ACN log I took, it's the 2nd revision from Ken and I took it probably a week before that e40 log

[Tkent818]

Originally Posted by Tkent818

https://datazap.me/u/tkent818/91acn?log=0&data=3-21

This is a 91ACN log I took, it's the 2nd revision from Ken and I took it probably a week before that e40 log

If it was the turbos wouldn't they be showing more symptoms? Smoking, or howling at lower Rpm's? Is it possible the rear inlet isn't all the way on?

[Saif2018]

Originally Posted by Tkent818

If it was the turbos wouldn't they be showing more symptoms? Smoking, or howling at lower Rpm's? Is it possible the rear inlet isn't all the way on?

Yes generally speaking. Didn't you say turbos sirening in the log?

That log does look better though,

Originally Posted by Tkent818

https://datazap.me/u/tkent818/91acn?log=0&data=3-21

This is a 91ACN log I took, it's the 2nd revision from Ken and I took it probably a week before that e40 log

A smoke test should point to any leaks,

If the wastegates aren't closing properly it's possible that your loosing boost pressure. You can try adjusting them manually, have you got any wastegate rattle?

[Tkent818]

Originally Posted by Saif2018

Yes generally speaking.

A smoke test should point to any leaks,

Do a log with WGDC and fuel trims enabled. If the wastegates aren't closing properly it's possible that your loosing boost pressure.

So when I received my base map from Ken, I noticed wastegate rattle fix was enabled. He said flash all options so I went ahead and did it. I'm wondering why that would be enabled on brand new turbos?

[Saif2018]

Originally Posted by Tkent818

So when I received my base map from Ken, I noticed wastegate rattle fix was enabled. He said flash all options so I went ahead and did it. I'm wondering why that would be enabled on brand new turbos?

WGDC rattle should be nonexistent on new turbos. I remember someone from VTT claiming it should be enabled, lol. No wonder they get a bad rep.

Rattle fix will introduce lag but shouldn't cause boost to be significantly off target like the previous log.

[Sgop335]

Originally Posted by Tkent818

If it was the turbos wouldn't they be showing more symptoms? Smoking, or howling at lower Rpm's? Is it possible the rear inlet isn't all the way on?

When i saw the log, had to do a double take. These are stg 2 turbos?!
They seem to be boosting like stock turbos, if you look at the wgdc and boost. That makes me think a boost leak or turbos are bad.
And you are “custom” tuning them for only 18psi target?
Another thing is the signature rail pressure dip <1000psi and the boost is not even that high.

[Tkent818]

Originally Posted by Sgop335

When i saw the log, had to do a double take. These are stg 2 turbos?!
They seem to be boosting like stock turbos, if you look at the wgdc and boost. That makes me think a boost leak or turbos are bad.
And you are “custom” tuning them for only 18psi target?
Another thing is the signature rail pressure dip <1000psi and the boost is not even that high.

I still have to get a 3.5 bar tmap and that's the base map from Ken on the e40 log. He said that e40 log was no good to tune off of and before I could get another log a couch came off a truck and took part of my front end out. I'll have the car back up by tomorrow and able to take another log. Im also very hesitant until I can figure out that noise. Ken, Chris from VTT, and a few other guys have said they almost guarantee it's a very small boost leak. Like letting the air out of the stretched neck of a balloon and continuing to go WOT like that will over speed the turbo eventually

[Sgop335]

Originally Posted by Tkent818

I still have to get a 3.5 bar tmap and that's the base map from Ken on the e40 log. He said that e40 log was no good to tune off of and before I could get another log a couch came off a truck and took part of my front end out. I'll have the car back up by tomorrow and able to take another log. Im also very hesitant until I can figure out that noise. Ken, Chris from VTT, and a few other guys have said they almost guarantee it's a very small boost leak. Like letting the air out of the stretched neck of a balloon and continuing to go WOT like that will over speed the turbo eventually

Sorry to hear that. Hope youre ok.
I still think for stg 2 turbos the wgdc will be quite low when boosting 16psi. Somethings up. Look at some ppls logs here w stg 2 turbos.
Yours seem closer to stock turbos and to me that seems much more than a “small boost leak”