[studio54]

Originally Posted by Saif2018

How much boost were you at when it started whining?

My next set will be OEM Billets (RB) or RB ones for this reason as well as wastage reliability issues. I hate the whine.

Personnaly, I wouldn't bother the whine sound if it wasn't associated with a failure probability. Each time I hear it, one part of my brain trigger "maybe they will fail soon" and it does not feel good, so I have to WOT it even more to not have the whine

RBs seem to be a good choice


I am almost certain my new set started whining after running/woting one/two months straight of V9 (up to 19psi), higher targets than V7 (~14-16 psi)

my original turbos, and next set didn't whine at all while running most of the time on V7 (but they failed while running V9, coincidental I imagine, don't know about failure rate compared to tune used)

according to my logs (boost & wgdc), I am confident that V7 (without agressive burble or flames) is safer in the long term

[roadkillrob]

As a data point, never had an issue on V7 also and found the bottom end felt better than v9, a couple of my OEM coils started miss firing but back on v7 they ran fine, so certainly v9 was putting more stress on components, upgraded to Eldor coils and had no more issues with v9 but v7 still felt better in my book to drive, hoping to try v10 in the spring when I get the car out.

[Bimmer_Bro]

Originally Posted by studio54

Personnaly, I wouldn't bother the whine sound if it wasn't associated with a failure probability. Each time I hear it, one part of my brain trigger "maybe they will fail soon" and it does not feel good, so I have to WOT it even more to not have the whine

RBs seem to be a good choice


I am almost certain my new set started whining after running/woting one/two months straight of V9 (up to 19psi), higher targets than V7 (~14-16 psi)

my original turbos, and next set didn't whine at all while running most of the time on V7 (but they failed while running V9, coincidental I imagine, don't know about failure rate compared to tune used)

according to my logs (boost & wgdc), I am confident that V7 (without agressive burble or flames) is safer in the long term

I agree V7 might be a bit safer but I believe it targets around 18 psi and then tapers to 14-16 (on stage2+). Still one of my favourite maps. Used that one for 2-3 years before recently switching to V10. My car has been tuned for almost 4 years with no turbo whine yet... knocks on wood.
Probably a coincidence that they died on V9. V9 boost curve was a lot more linear which I did not like. Plus my car idled so weird on it lol.

Originally Posted by roadkillrob

As a data point, never had an issue on V7 also and found the bottom end felt better than v9, a couple of my OEM coils started miss firing but back on v7 they ran fine, so certainly v9 was putting more stress on components, upgraded to Eldor coils and had no more issues with v9 but v7 still felt better in my book to drive, hoping to try v10 in the spring when I get the car out.

I think you will like V10. I hated V8, 9 was ok but didn't feel as violent as V7. 10 kinda feels like a mix of 7&9... feels fast to be honest. I just need to make some adjustments to my xhp settings to iron out the shifts a little.

[Saif2018]

Originally Posted by studio54

Personnaly, I wouldn't bother the whine sound if it wasn't associated with a failure probability. Each time I hear it, one part of my brain trigger "maybe they will fail soon" and it does not feel good, so I have to WOT it even more to not have the whine

RBs seem to be a good choice

I am almost certain my new set started whining after running/woting one/two months straight of V9 (up to 19psi), higher targets than V7 (~14-16 psi)

my original turbos, and next set didn't whine at all while running most of the time on V7 (but they failed while running V9, coincidental I imagine, don't know about failure rate compared to tune used)

according to my logs (boost & wgdc), I am confident that V7 (without agressive burble or flames) is safer in the long term

That sounds about right, same thing happened to me, soon as I got near 20psi

The thing is that whine is annoying

I never had burbles or flame tunes, turbos still whined. I haven't seen anyone with RB OEM Billets or 1's or 2's complaining of whining turbos.

[studio54]

Originally Posted by Bimmer_Bro

I agree V7 might be a bit safer but I believe it targets around 18 psi and then tapers to 14-16 (on stage2+). Still one of my favourite maps. Used that one for 2-3 years before recently switching to V10. My car has been tuned for almost 4 years with no turbo whine yet... knocks on wood.
Probably a coincidence that they died on V9. V9 boost curve was a lot more linear which I did not like. Plus my car idled so weird on it lol.



I think you will like V10. I hated V8, 9 was ok but didn't feel as violent as V7. 10 kinda feels like a mix of 7&9... feels fast to be honest. I just need to make some adjustments to my xhp settings to iron out the shifts a little.

Hehe yep I think targets also depend on ambient temp, on mine, on V7 in winter it is in the 16psi peak, and up to 18psi in summer.

V10 push really hard for sure ! I had the live boost MHD gauge while driving around, it was the first I seen 20 psi (in the minimum and maximum values recorded on bottom side of the gauge, probably got 20 psi for a fraction of seconds), but never seen 20 psi in years of running V7 hehe.

Any way I wish long lives to every one turbos

Originally Posted by Saif2018

That sounds about right, same thing happened to me, soon as I got near 20psi

The thing is that whine is annoying

I never had burbles or flame tunes, turbos still whined. I haven't seen anyone with RB OEM Billets or 1's or 2's complaining of whining turbos.

Hmm yep, I also do not think the whine is necessarly connected with burbles (even if it might, each case is different), I didn't run burble on my last set and it's whining.

One interesting thing I noticed is that when I flashed my updated stock OEM bin (generated with MHD) for emissions/MOT, the whine was almost inexistant, and I am pretty sure it's related to the resting wastegates position at idle and low load.
With the stock bin, it was resting at 10, while with OTS maps, it's resting at around 60. It seems to attenuate the whine a lot ! Car sounds deeper also while cruising.

You can test your stock bin and see if it does the same thing. If it does you can probably ask your tuner to change the wastegate position at low load (but might add a bit of lag?).

[Saif2018]

Originally Posted by studio54

Hehe yep I think targets also depend on ambient temp, on mine, on V7 in winter it is in the 16psi peak, and up to 18psi in summer.

V10 push really hard for sure ! I had the live boost MHD gauge while driving around, it was the first I seen 20 psi (in the minimum and maximum values recorded on bottom side of the gauge, probably got 20 psi for a fraction of seconds), but never seen 20 psi in years of running V7 hehe.

Any way I wish long lives to every one turbos



Hmm yep, I also do not think the whine is necessarly connected with burbles (even if it might, each case is different), I didn't run burble on my last set and it's whining.

One interesting thing I noticed is that when I flashed my updated stock OEM bin (generated with MHD) for emissions/MOT, the whine was almost inexistant, and I am pretty sure it's related to the resting wastegates position at idle and low load.
With the stock bin, it was resting at 10, while with OTS maps, it's resting at around 60. It seems to attenuate the whine a lot ! Car sounds deeper also while cruising.

You can test your stock bin and see if it does the same thing. If it does you can probably ask your tuner to change the wastegate position at low load (but might add a bit of lag?).

I can't stand lag I've got no WG rattle, at least no noticeable rattle or fix applied, yeah I think your right it will probably introduce lag.

I'd rather wait for them to blow lol.

[Stock_e92]

All I see here is log this log that, virtual dyno....Go to a real dyno and stop speculating.
On V5 E40 I put down 536 whp and 520 wtq. That, to me, is going to be the best on an OTS. If you want more and have the mods get a custom tune, which is what I plan to do here in a bit. I'll be happy with 600whp. you can see the video of my dyno pull on my IG
angel_stockN54

[Saif2018]

Originally Posted by Stock_e92

All I see here is log this log that, virtual dyno....Go to a real dyno and stop speculating.
On V5 E40 I put down 536 whp and 520 wtq. That, to me, is going to be the best on an OTS. If you want more and have the mods get a custom tune, which is what I plan to do here in a bit. I'll be happy with 600whp. you can see the video of my dyno pull on my IG
angel_stockN54

It's well known that V5 E40 map produces most power on OTS maps, has been mentioned several times,

Which turbos was the v5 e40 map on?

[Dave92N54]

Originally Posted by Saif2018

lol, good for you, hope they don't blow prematurely, seems like a dice rolling exercise with Chinese turbos, some say they are fine, others saying they are not. V5 E40 is for stock turbos, first time I heard they are running fine on 17t's

If you're familiar with Vehicle Virals or Swap Depot on youtube, Swap Depot's E90 is on 17Ts running the V5 E40 map I believe. Made about 550 on the dyno iirc. That's youtube content though, when you become as popular as they are (and work at a major BMW performance shop) doing something like that pretty much pays for itself. For the average person it's probably a terrible idea.

[Saif2018]

Originally Posted by Dave92N54

If you're familiar with Vehicle Virals or Swap Depot on youtube, Swap Depot's E90 is on 17Ts running the V5 E40 map I believe. Made about 550 on the dyno iirc. That's youtube content though, when you become as popular as they are (and work at a major BMW performance shop) doing something like that pretty much pays for itself. For the average person it's probably a terrible idea.

Yeah familiar with them, didn't know Swap Depot was using V5 E40 was on the 17t though,

Vehicle Virals N54 is Docrace single turbo, dynoed over 700whp,

Yeah pretty sure they make big bucks and can afford to blow several turbos lol. The average owner like us can't though, need a proven reliable long term turbo like RB Pure.

[Bradcodo]

Anyone having problems with V10 throttle closing between 3200-4500rpm? Won't do it with V9 but always seems to happen with V10.

https://datazap.me/u/adcodo/log-1647...ta=3-4-7-21-24

[tej98]

Originally Posted by Bradcodo

Anyone having problems with V10 throttle closing between 3200-4500rpm? Won't do it with V9 but always seems to happen with V10.

https://datazap.me/u/adcodo/log-1647...ta=3-4-7-21-24

I notice the same in my logs, even with DSC completely turned off.

[Saif2018]

I tried v10 just for kicks, didn't log it but felt pretty good at first but for some reason my fuel consumption was tanking, I have no leaks on Index 12 injectors,

Went back to my custom tune and it went back to normal.

I'd say stick to V7.1 or V9 OTS maps.

[Chapperss]

I`ve been using V10 for a couple of weeks now and prefer it to V7. The boost seems more linear but just as powerful, if not more so. It seems to come in softer.

I`ve seen 21psi on V7 whilst using the MHD dials - I have a permanent tablet setup in the car for this. Haven`t seen V10 go past 20.2. I`m sure it will at some point I just haven't been going crazy of late.

Fuel consumption hasn`t changed for me.

[Bimmer_Bro]

Originally Posted by Bradcodo

Anyone having problems with V10 throttle closing between 3200-4500rpm? Won't do it with V9 but always seems to happen with V10.

https://datazap.me/u/adcodo/log-1647...ta=3-4-7-21-24

Do you feel it when driving or just seeing this through the logs? I am on v10 but haven't logged. However I have noticed no strange behaviour yet.

[Bradcodo]

Originally Posted by Bimmer_Bro

Do you feel it when driving or just seeing this through the logs? I am on v10 but haven't logged. However I have noticed no strange behaviour yet.

The only think I can feel is a slight miss around 3200-3300rpm but feels like its pulling fine after that. Car has new plugs and R8 bimmer life coils so I don't believe it's an ignition problem.

[Dave92N54]

Originally Posted by Bradcodo

The only think I can feel is a slight miss around 3200-3300rpm but feels like its pulling fine after that. Car has new plugs and R8 bimmer life coils so I don't believe it's an ignition problem.

You're overboosting and it's closing throttle to keep it on target. You can see the throttle closure happens shortly after you exceed target by just a tad.

[Bradcodo]

Originally Posted by Dave92N54

You're overboosting and it's closing throttle to keep it on target. You can see the throttle closure happens shortly after you exceed target by just a tad.

Just out of curiosity, why would it only do this only on V10? Below is a log of V9 and it is overboosting by about 1.5psi but no throttle closure.

https://datazap.me/u/adcodo/log-1645...data=3-4-21-24

[whyzee125]

I wouldn't be too concerned about turbo whine unless it's all the time. I've seen a lot of N54 turbos that whine on occasion and they lasted a long, long time. I've seen one or two sets that were brand new from the dealer and whined. Some do, some don't. I don't think it's the end of the world unless it does it constantly.

[Dave92N54]

Originally Posted by Bradcodo

Just out of curiosity, why would it only do this only on V10? Below is a log of V9 and it is overboosting by about 1.5psi but no throttle closure.

https://datazap.me/u/adcodo/log-1645...data=3-4-21-24

Up to the tuner. I did see you're on 91 which as we all know is pretty poor fuel. I'd be willing to bet on better fuel and the 93 tune it would happen less but idk.

[Saif2018]

Originally Posted by whyzee125

I wouldn't be too concerned about turbo whine unless it's all the time. I've seen a lot of N54 turbos that whine on occasion and they lasted a long, long time. I've seen one or two sets that were brand new from the dealer and whined. Some do, some don't. I don't think it's the end of the world unless it does it constantly.

Does it constantly but only at low rpm

Above 2k rpm, can't really hear it. At this point I'm just waiting for Turbos to go before I replace mine. Yeah I've heard new OEM ones whining as soon as they are boosting near 20psi,

[E90nick53]

I just flashed v10 e30 for the first time and when I finally got into it the butt dyno definitely noticed gains over v7 but I have those same throttle closings in my logs whenever I start to go over boost target (normally hit 19.5psi before throttle cuts) and find it weird. Traction controls completely off and have all new boost Solenoids and everything so not sure if I should rock with v10 a little longer or switch back to v7 where everything seems to be fine.

Turbos also wine like crazy when I'm in the lower rpm's have actually had mutable people tell me it sounds like I'm supercharged, still pushin strong though