[SithF30]

Hello guys,

since yesterday I have a severe issue on my F30 N55 PWG
Specs:
N55 PWG
Turbosystems Stage 1 Hybrid
Pure Turbo inlet
VRSF downipe
Do88 intercooler
Stock diverter valve
Tuned via MHD by Pureboost

Car was running perfectly fine for around 10.000km. Last week I moved back to stock intake, before the car was equipped with an Eventuri intake.
Now, since yesterday, boost drops heavily from 19psi to 8 psi passing 5000rpm
Happens on all gears.

Here a log:
https://datazap.me/u/sithf30/boost-i...a=3-64&solo=58

There seems to be a boost leak somewhere, as WGDC is increasing.
I already tried to exchange the pressure converter (sitting near the valve cover), but nothing changed. Boost pipes seem to be ok (at least from the outside), same is for the vacuum tubes)

Fault codes showing up:
122108 (Blow off valve: Clamped closed)
122308 (Charging pressure control, plausibility Pressure to low)

122108 is showing up since the car is tuned, as far as I understood, it is a random code popping up on tuned N55's

Could it be, that the DV got stuck somewhere?

best regards

Simon

[thejeremyman9]

That is weird. What does your tuner say? Did you try an OTS map? Did you try swapping the other intake back on?

[YASBBYM3]

As there are seldom problems by coincidence, boost leak would seem a place to start.

[thejeremyman9]

Originally Posted by YASBBYM3

As there are seldom problems by coincidence, boost leak would seem a place to start.

I typically say the same but his log is weird, it actually hits high boost then has a strange drop

[SithF30]

Guys, I found it. You never immagine what it was.
The 90° rubber junction between grill and air filter jumped out of it's fixation.
So it blocked partially the intake.
Picture enclosed.

[AmuroRay]

Stock intake box is a downgrade by a lot.

[YASBBYM3]

Originally Posted by AmuroRay

Stock intake box is a downgrade by a lot.

Not true. Stock intake actually very good on the F30s performance wise.

[AmuroRay]

Originally Posted by YASBBYM3

Not true. Stock intake actually very good on the F30s performance wise.

No, it's really not

[YASBBYM3]

Dynos prove you are incorrect

[AmuroRay]

Originally Posted by YASBBYM3

Dynos prove you are incorrect

Post them.
The stock airbox is garbage, so much so when I added an inlet my car became super laggy. There was a noticeable power increase just changing to the M2 airbox - and again another increase going to the CTS intake.

Logs substantiate this.

I'll wait for those dynos.

[YASBBYM3]

You would actually need to be able to understand dynos.

And we are in the F30 threads, not the 2 series.

Suggest you post in proper thread where you have first hand knowledge.

[AmuroRay]

Originally Posted by YASBBYM3

You would actually need to be able to understand dynos.

And we are in the F30 threads, not the 2 series.

Suggest you post in proper thread where you have first hand knowledge.

You mean this dyno?


Or how about my past cars - where I did a mod by mod compilation dyno:






or my E92 N52, which I did multiple runs on:

[YASBBYM3]

Originally Posted by AmuroRay

You mean this dyno?

Again, a 235i is not a F3x and has no impact on this thread.

This is not a E9x thread either.

And I made no claims about stock air boxes on those models.

Regardless, you trying to say there is big difference in these 3 runs 😂

Sound to your ears is not a performance difference. As F3x owners know, if you want more sound just open more holes in the OEM AirFilter just like the MPSK kit has.

[AmuroRay]

Originally Posted by YASBBYM3

Again, a 235i is not a F3x and has no impact on this thread.

Regardless, you trying to say there is big difference in these 3 runs 😂

An M235i has the same exact engine and intake that the F3x has.
Kid, if you're going to talk nonsense, at least have something to substantiate it on.

https://www.realoem.com/bmw/enUS/par...&q=13717605654

Embarrassing.

[YASBBYM3]

Originally Posted by AmuroRay

Stock intake box is a downgrade by a lot.

Even while trying to use non-F3x to justify your post about F3x airbox, single digit hp increase is your justification that the stock airbox downgrades performance a lot 😂

As I said, you have to be able to understand dynos.

I will happily concede you can get perhaps 5-7hp out of a different intake and would gave from the start.

But if you think 5-7hp is “a downgrade by a lot” which started this, you are really mistaken. No one will ever be able to tell the difference.

All your dynos have only proven me correct.

[YASBBYM3]

Originally Posted by AmuroRay

An M235i has the same exact engine and intake that the F3x has.
Kid, if you're going to talk nonsense, at least have something to substantiate it on.

https://www.realoem.com/bmw/enUS/par...&q=13717605654

Embarrassing.

Because they have the same front end and airflow.

Wait a minute, no they don’t 😂

All your dynos have only proven me correct. There is no big downgrade to the stock OEM.

[n55david]

Originally Posted by YASBBYM3

Because they have the same front end and airflow.

Wait a minute, no they don’t 😂

All your dynos have only proven me correct. There is no big downgrade to the stock OEM.

You aren't looking good in this thread man.. I have nearly 30 years in the industry, building motors, tuning professionally, ran two different kind of dynos... i was well modded and i know what worked and what didnt... and the stock intake is garbage on anything other than stock, it's the same on the f2x and f3x cars too.

[n55david]

Originally Posted by AmuroRay

An M235i has the same exact engine and intake that the F3x has.
Kid, if you're going to talk nonsense, at least have something to substantiate it on.

https://www.realoem.com/bmw/enUS/par...&q=13717605654

Embarrassing.

It's so embarrassing 😳 I laughed my ass off though.. I needed that.

[YASBBYM3]

Originally Posted by n55david

You aren't looking good in this thread man.. I have nearly 30 years in the industry, building motors, tuning professionally, ran two different kind of dynos... i was well modded and i know what worked and what didnt... and the stock intake is garbage on anything other than stock, it's the same on the f2x and f3x cars too.

Originally Posted by n55david

It's so embarrassing 😳 I laughed my ass off though.. I needed that.

Clearly you are an embarrassment thinking the airflow and front end of the 2 series is the same as the f30.

And obviously for all your experience you cannot see that his dynos show nothing outside of margin of error at best, totally negating his initial claims. Give us something real next time.

[n55david]

Originally Posted by YASBBYM3

Clearly you are an embarrassment thinking the airflow and front end of the 2 series is the same as the f30.

And obviously for all your experience you cannot see that his dynos show nothing outside of margin of error at best, totally negating his initial claims. Give us something real next time.

What the hell are you talking about? The opening in the grill is the same size.

You are flat out wrong.. also.. If you think I give a enough fucks to try and prove it to you when I already know it.. You're wrong, I'm not that guy. But thanks for the entertainment lol

[YASBBYM3]

Originally Posted by n55david

What the hell are you talking about? The opening in the grill is the same size.

You are flat out wrong.. also.. If you think I give a enough fucks to try and prove it to you when I already know it.. You're wrong, I'm not that guy. But thanks for the entertainment lol

So a f30 front bumper and grills as well as parts immediately behind it are the same as a f22.

Not even close.

Get real. And serious about reality and what matters instead of diverting into immaterial info.

There is no one that can tell the difference in 2% horsepower variation (single digit) on performance if not on a dyno.

Including you.

[n55david]

Originally Posted by YASBBYM3

So a f30 front bumper and grills as well as parts immediately behind it are the same as a f22.

Not even close.

Get real. And serious about reality and what matters instead of diverting into immaterial info.

There is no one that can tell the difference in 2% horsepower variation (single digit) on performance if not on a dyno.

Including you.

Hahahahahahahahahahahahahahahaha