[N55lif3]

Just want to let everyone know that my Pure Turbo Stage 2 blew yesterday on my E92 N55. The turbo lasted around 6000 miles.

The car was running on a 19psi Wedge Performance tune the entire time.

Prior to this, I have witnessed four Pure Stage 2 turbos blowing--- 3 of them being from the same owner who additionally blew two warranty turbos (one had a seized wastegate as soon as he drove off). The labour cost wasnt making him too happy, but Pure Turbo didn't care.

Just a heads up coming from a person who has seen and experienced it. Go with a Big Boost or don't upgrade at all. These stock housings can not handle the back pressure of even 75% wgdc. Crap turbo, but at the end its your choice!

[starbuck]

Interesting. Not sure if I've heard if any similar cases before. I've know a few people running the ps2 on the n55 for years reliably

[mike@x-ph.com]

Im sorry to hear that OP, for a better context in i suggest you post datalogs of your custom tune to see what caused the failure.
It could be a bad turbo or a bad a map that's too aggressive

[Raptor04]

Originally Posted by N55lif3

Just want to let everyone know that my Pure Turbo Stage 2 blew yesterday on my E92 N55. The turbo lasted around 6000 miles.

The car was running on a 19psi Wedge Performance tune the entire time.

Prior to this, I have witnessed four Pure Stage 2 turbos blowing--- 3 of them being from the same owner who additionally blew two warranty turbos (one had a seized wastegate as soon as he drove off). The labour cost wasnt making him too happy, but Pure Turbo didn't care.

Just a heads up coming from a person who has seen and experienced it. Go with a Big Boost or don't upgrade at all. These stock housings can not handle the back pressure of even 75% wgdc. Crap turbo, but at the end its your choice!

Not sure I understand the statement they can't handle 75% wgdc. Under spool, you running 100%$ wgdc. When you say 75% wgdc, are you referring to base wgdc or wgdc after pid? I don't own pure turbos, but I do have RBs and trying to learn how much wgdc is too much and which wgdc is the correct metric.

[deemarr 335i]

I got the 1st gen stage 2 and it's been fine for years honestly, all the way up to 22psi no issues.

[anjuna]

wedge tuning pushes the max EGT value from
Stock - 1850°F
Wedge - 24xx°F

That's a lot more heat.

[J3]

Originally Posted by N55lif3

Just want to let everyone know that my Pure Turbo Stage 2 blew yesterday on my E92 N55. The turbo lasted around 6000 miles.

The car was running on a 19psi Wedge Performance tune the entire time.

Prior to this, I have witnessed four Pure Stage 2 turbos blowing--- 3 of them being from the same owner who additionally blew two warranty turbos (one had a seized wastegate as soon as he drove off). The labour cost wasnt making him too happy, but Pure Turbo didn't care.

Just a heads up coming from a person who has seen and experienced it. Go with a Big Boost or don't upgrade at all. These stock housings can not handle the back pressure of even 75% wgdc. Crap turbo, but at the end its your choice!

My turbo just blew too. Was installed in May, didn't even get to 5k miles...

[Hunter3]

Well this is a bit frightening to hear I installed a pure stage 2 about 4 months ago and am running a wedge E50 tune has been running perfectly for now.

[Tyc0]

Coming from the n54 side of things, the pure turbos are one of the two most reliable options. What makes this happen with the n55? I know it's a completely different turbo but I would think if they figured out how to do it on n54 they could replicate that reliability with n55.

[N55lif3]

Too much backpressure for stock n55 turbo housing. I don't blame the tuner at all just failed design.

Go bigboost or go home imo but sold the car. Rod bearing spun, put an f30 motor in my e92 then the last thing I thought would blow blows lol. Buddy with M2 also just blew his ps2 last month as well, also tuned by wedge and no he doesnt go to the same shop as me.

[N55lif3]

Forgot to show you guys the updates lol

[J3]

What's even more sad is when I think about it- I wasn't even pushing the turbo hard. Boosting 18psi, with tiny spikes in the 19s every once in awhile.

It happened in a first gear pull and reached a peak of 16psi. I'm terribly disappointed and frustrated as this is my daily driver. Yeah the car will run still minus the turbo whistling/ howling and clouds of white smoke be blown everywhere.

[Ozzie335i]

Originally Posted by starbuck

Interesting. Not sure if I've heard if any similar cases before. I've know a few people running the ps2 on the n55 for years reliably

Something here smells fishy. I was one of the original 10 or so to go with a Pure 1, then later a Pure 2. I am running strong. PI with 24 psi boost. Not one guy has come here with a blown Pure turbo in all these years. Now all of a sudden somebody comes here with 3, or is it 4 failures? Is it the lack of octane in the fuel up north?

[J3]

Originally Posted by Ozzie335i

Something here smells fishy. I was one of the original 10 or so to go with a Pure 1, then later a Pure 2. I am running strong. PI with 24 psi boost. Not one guy has come here with a blown Pure turbo in all these years. Now all of a sudden somebody comes here with 3, or is it 4 failures? Is it the lack of octane in the fuel up north?

QCs, manufacturing processes, equipment, supplies, etc can all change over time. I am in the states so what do you mean by fishy? Happy that your car is running good though. I wish mine was.

[MTK24]

Unfortunate. I was thinking about upgrading turbos but seeing threads like this makes me change my mind.

I'm on 16-18 psi on stock turbo with mhd/jb4 for 45k miles on 92 octane and the car still boosts up to target fine.

[Ozzie335i]

Originally Posted by Vampire335i

Unfortunate. I was thinking about upgrading turbos but seeing threads like this makes me change my mind.

I'm on 16-18 psi on stock turbo with mhd/jb4 for 45k miles on 92 octane and the car still boosts up to target fine.

You better stay away from the rod bearing threads Vampire.

[MTK24]

Originally Posted by Ozzie335i

.


You better stay away from the rod bearing threads Vampire.

My n55 engine is late 2011.

BMW made revisions to each engine by the build month and date for the N55. A part of this was rod bearings and fixing the vanos issues

The pistons on the n55 suck though. Especially since bmw runs these cars hot. I still see metal shavings in my oil and don't expect my car to last "forever".

They made the pistons better on the m2 n55 which was the N55B30T0.

The torque and power on x drive tuned with a curb weight of 3800 lbs is too fun to give up or get something else lol. With the hydraulic steering and upgraded suspension all around the car is more fun to drive than a lot of performance cars I have driven

[wheela]

Originally Posted by Vampire335i

My n55 engine is late 2011.

BMW made revisions to each engine by the build month and date for the N55. A part of this was rod bearings and fixing the vanos issues

The pistons on the n55 suck though. Especially since bmw runs these cars hot. I still see metal shavings in my oil and don't expect my car to last "forever".

They made the pistons better on the m2 n55 which was the N55B30T0.

The torque and power on x drive tuned with a curb weight of 3800 lbs is too fun to give up or get something else lol. With the hydraulic steering and upgraded suspension all around the car is more fun to drive than a lot of performance cars I have driven

You still see metal shavings in your oil? Still? How long have you been seeing that? This doesn't concern you? I'm not an expert, but your engine shouldn't be generating metal shavings; that means something is very wrong. Literally every thread I've seen where somebody found metal shavings in their oil, they ended up finding at least 1 rod bearing toasted, or at least very near toasted. If that was my car I'd be getting my engine checked out ASAP.

[MTK24]

Originally Posted by wheela

You still see metal shavings in your oil? Still? How long have you been seeing that? This doesn't concern you? I'm not an expert, but your engine shouldn't be generating metal shavings; that means something is very wrong. Literally every thread I've seen where somebody found metal shavings in their oil, they ended up finding at least 1 rod bearing toasted, or at least very near toasted. If that was my car I'd be getting my engine checked out ASAP.

Still man. I'm not sure why.

I purchased my car at 60k miles years ago and did a few oil analysis with the vehicle tuned to see if I should put money into the car and if the engine is good. I sent the results as an attachment.

I haven't done an oil analysis the past 20k miles because I thought it would all be the same. I change my oil every 5k miles. I use liqui moly 5w30. I am at 104k miles right now

One thing I'm worried about is the vehicle is running hotter than usual the past few months. really don't know why or if it's me reading all these threads popping up with tuned cars and rod bearings as these engines are tested as time goes on and more information comes out. I changed my water pump/thermostat since I was getting BSD codes and the car still runs the same heat. I just recently did an oil change and saw metal shavings but car has no knock. I thought small shavings is normal in oil. My car doesn't sputter and it drives smooth with no nose from engine as rpm goes up. I noticed during my recent oil change the oil smells like gas and I believe that was because my pcv breather valve was damaged and not allowing the engine to breath properly.

Seeing threads like this gives me some hope because my metal shavings are similiar to this person
https://www.e90post.com/forums/showthread.php?t=1582205

Im sending my recent oil change to see if it's anything alarming.

[J3]

So disappointed

[bbnks2]

Originally Posted by Vampire335i

Still man. I'm not sure why.

I purchased my car at 60k miles years ago and did a few oil analysis with the vehicle tuned to see if I should put money into the car and if the engine is good. I sent the results as an attachment.

I haven't done an oil analysis the past 20k miles because I thought it would all be the same. I change my oil every 5k miles. I use liqui moly 5w30. I am at 104k miles right now

One thing I'm worried about is the vehicle is running hotter than usual the past few months. really don't know why or if it's me reading all these threads popping up with tuned cars and rod bearings as these engines are tested as time goes on and more information comes out. I changed my water pump/thermostat since I was getting BSD codes and the car still runs the same heat. I just recently did an oil change and saw metal shavings but car has no knock. I thought small shavings is normal in oil. My car doesn't sputter and it drives smooth with no nose from engine as rpm goes up. I noticed during my recent oil change the oil smells like gas and I believe that was because my pcv breather valve was damaged and not allowing the engine to breath properly.

Seeing threads like this gives me some hope because my metal shavings are similiar to this person
https://www.e90post.com/forums/showthread.php?t=1582205

Im sending my recent oil change to see if it's anything alarming.

Those are air bubbles in the oil not metal lol

Cut your filter open and see what's in the pleats. Anything more than a handful of flakes across the entire filter and you've got an issue...

The N55 is 10+ years old of course you will see failures. All engines fail and it's nothing "new" coming out. The N55 pistons suck? What do you mean... how so? BMW changed the rod bearings? How so? Elaborate please if you're going to make statements like this.

And without posting logs of your car you can't just blindly blame PURE. Maybe WEDGE is the common denominator in those turbo failures? Or maybe it's the owners...

With that being said, a handful of blown PS2 means nothing. They've sold thousands of them across the vast lineup of N55 vehicles. For a hybrid turbo the failure rate is extremely low. Stock turbos fail too lol. It's still not common.

EDIT:

I keep having my rail pressure crash on me during WOT on an E30 ps2 tune.

My high-pressure is brand new. I just got my LPFP upgraded to a warlboro 450 (just pump) thinking it was just the LPFP but it changed absolutely nothing. The rail pressure still crashes the exact same way as it did before and every now and then my car stalls on cold starts (like before aswell)

I have some people telling me it could be my EKP but I get absolutely no codes in regards to it.

On my E30 tune the car violently backfires/sputters during peak boost cutting out power and then continuing. The weird part is that the next day the car can be running perfectly fine on back-to-back WOT with no timing corrections.

On my regular daily driving map which is set at 11psi, the rail pressure spikes up and down on WOT. Jumps from 2900 to 2100 to 2900 to 2100 etc and slowly steadies.

OP was starving his engine of fuel... to the point that "the car violently backfires/sputters during peak boost..." that should tell you what the common denominator might be in PS2 failures lol

Either the owners with broken cars or WEDGE giving people tunes that are too aggressive for their setup/fuel.

[anjuna]

Originally Posted by bbnks2

Either the owners with broken cars or WEDGE giving people tunes that are too aggressive for their setup/fuel.

Originally Posted by anjuna

wedge tuning pushes the max EGT value from
Stock - 1850°F
Wedge - 24xx°F

That's a lot more heat.

Yeah. Like I said.