[benmit]

Hey there!

Im on of those pests that sign up when they are in desperation of some help


But now im signed up i vouch to be an active user!?

Anyway thanks for having me just curious to see if anyone is interested in taking a look at a log..

I got my car back from the shop yesterday with VRSF oem location inlets installed, a new clutch and a new Valve cover.

Believe its going to be faaaaaairly straight forward and something to do with the inlet install.

So when got my car back torque dropped from 600nm to 300 and now have like zero boost. It felt like the car was worse than stock but still really smooth. MUST be a boost look somewhere?

https://datazap.me/u/bmwn54335i/pull...23-25-29-30-31


First time looking at logs but clearly a big gap between boot actual and boost target. Probably a multiple of other things wrong too.

also AFR go stupid half way? Car may also seem a little loud like wastegate stuff? ahhhh any help would be greatly appreciated as cant get back down to shop for a while and she is a long drive (reason took it home was i thought they had wiped the tune and just be a matter of reflashing but have tried this and it is not the case)

Should also note im MHD stage 2+ and not showing any codes but a 30FF has been a shadow code in the past. found bungs out of charge pipe last night and replaced those. But still got this massive boost and power loss!

[fozzyn54]

Hey guys

Set up a single turbo n54 and been having a pretty consistent misfire. Brand new 02 sensors, plugs, injectors and coils really stumped on what it could be.

Been throwing codes for misfiring on different cylinders and thrown some 02 sensor codes as well randomly

https://datazap.me/u/fozzizzle/misfire?log=0&data=3-22

Here's a log driving. sorry if I didn't get the right things pretty new to this. It didn't throw any codes in this log but I could feel the misfire in the low rpm range

https://datazap.me/u/fozzizzle/misfire-code

Got a log here where it threw a code for cylinder 5 and 6

Stage 3 LPFP
GTX35
Index 12 injectors
VRSF 7.5inch race ic
6at

Thanks for any help

[spacey_n54]

Hi everyone, just flashed MHD Stage 1 and want some feedback as I'm still trying to understand / learn logs.

2009 335i xdrive
DCI's
VSRF charge pipe
Tial BOV
91 oct

https://datazap.me/u/spaceyn54/stage...0&data=2-11-20

I'm not sure if my boost psi vs. target is healthy or not? Looks like it could be low at the beginning of the pull. Also seeing some timing corrections for a couple cylinders on 4th gear shift. Thanks for any feedback!

[eastsidaz]

Originally Posted by benmit

Hey there!

Im on of those pests that sign up when they are in desperation of some help


But now im signed up i vouch to be an active user!?

Anyway thanks for having me just curious to see if anyone is interested in taking a look at a log..

I got my car back from the shop yesterday with VRSF oem location inlets installed, a new clutch and a new Valve cover.

Believe its going to be faaaaaairly straight forward and something to do with the inlet install.

So when got my car back torque dropped from 600nm to 300 and now have like zero boost. It felt like the car was worse than stock but still really smooth. MUST be a boost look somewhere?

https://datazap.me/u/bmwn54335i/pull...23-25-29-30-31


First time looking at logs but clearly a big gap between boot actual and boost target. Probably a multiple of other things wrong too.

also AFR go stupid half way? Car may also seem a little loud like wastegate stuff? ahhhh any help would be greatly appreciated as cant get back down to shop for a while and she is a long drive (reason took it home was i thought they had wiped the tune and just be a matter of reflashing but have tried this and it is not the case)

Should also note im MHD stage 2+ and not showing any codes but a 30FF has been a shadow code in the past. found bungs out of charge pipe last night and replaced those. But still got this massive boost and power loss!

Even though its not the most ideal log. You should be making boost there easy. Plenty of wastegate, Did you recently do the charge pipe? O-ring in place and fully seated? I take it you have been all over checking the inlet install? All vacuum lines on boost solenoid's look ok? fmic connections? So it was building boost fine before install?

[Quick335XI]

Well just when we thought the car was just about tuned right, now suddenly it's developed an issue. We even scaled the tune of the timing way back and lowered the boost, and still the car cuts out real bad and eventually "flutters" so I let out of the pedal. The result is a "superknock" code usually on cylinder 5, sometimes others such as 3. Motor is basically new, steel rods and JE forged pistons so the last thing I want to do is blow it up lol.

At first we thought maybe bad gas, but I've been getting gas at this same place for years, E85 that usually registers around 60% ethanol according to the sensor. Here's what I was wondering.. I do know the turbos have a small leak. I'm wondering if now they're leaking oil into the cold side and getting oil into the combustion chamber, which of course would greatly lower the octane and cause knock. Is that possible? I do have a catch can. I'm also wondering if there's oil in the intercooler maybe.

The plugs are gapped at .020 and they're NGK 97506 which i'm pretty sure are correct.

The only thing that's changed in the last week or so since this was NOT happening is that I changed oils. I used to use Liqui Moly but a place was offering a deal on Valvoline synthetic for like $60 so I tried that; not sure if that's a coincidence or not. I did read some lesser oils can cause oil dropplets in the combustion chamber, but not sure.

Has anyone seen this issue before? Any help would be appreciated!

Log: https://datazap.me/u/terryeaton/log-...og=0&data=3-21

[JunkyardDogg]

I got some -6 timing corrections. Will new plugs/coils fix this?
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-20

[ArmanN54]

Hey guys, got 3 logs I made the same night.
I believe the last log shows a O2 sensor on bank 1 that has gone out, can anyone confirm?

1st:
https://datazap.me/u/armann54/1st-lo...og=0&data=3-22

2nd:
https://datazap.me/u/armann54/2nd-lo...og=0&data=3-22

Last:
https://datazap.me/u/armann54/last-l...og=0&data=3-22

[eastsidaz]

Originally Posted by JunkyardDogg

I got some -6 timing corrections. Will new plugs/coils fix this?
https://datazap.me/u/junkyarddogg/lo...og=0&data=3-20

No! You have some serious fuelling issues. Bank 1 is especially bad it sees over 90 AFR at one point at target boost. STFT's just seem stop working after 3800rpm.
LPFP seems good, HPFP seems ok. Compare your AFR to your previous log that's what you want to see. No codes at all?

[JunkyardDogg]

Originally Posted by GovernUrMental

No! You have some serious fuelling issues. Bank 1 is especially bad it sees over 90 AFR at one point at target boost. STFT's just seem stop working after 3800rpm.
LPFP seems good, HPFP seems ok. Compare your AFR to your previous log that's what you want to see. No codes at all?

I didn't read codes and this was my first run in a couple years. The ses light came on and the car was shaking and vibrating on acceleration after the run. Sounds like misfires.

[N54andS63TU]

Hi guys, my STFT trims are off by 15% what could be the problem? Problem on bank 1 or 2 not sure.

2-4 gear pull

https://datazap.me/u/azizzlol/mhd-st...3&mark=252-186

[Saif2018]

Originally Posted by Quick335XI

Well just when we thought the car was just about tuned right, now suddenly it's developed an issue. We even scaled the tune of the timing way back and lowered the boost, and still the car cuts out real bad and eventually "flutters" so I let out of the pedal. The result is a "superknock" code usually on cylinder 5, sometimes others such as 3. Motor is basically new, steel rods and JE forged pistons so the last thing I want to do is blow it up lol.

At first we thought maybe bad gas, but I've been getting gas at this same place for years, E85 that usually registers around 60% ethanol according to the sensor. Here's what I was wondering.. I do know the turbos have a small leak. I'm wondering if now they're leaking oil into the cold side and getting oil into the combustion chamber, which of course would greatly lower the octane and cause knock. Is that possible? I do have a catch can. I'm also wondering if there's oil in the intercooler maybe.

The plugs are gapped at .020 and they're NGK 97506 which i'm pretty sure are correct.

The only thing that's changed in the last week or so since this was NOT happening is that I changed oils. I used to use Liqui Moly but a place was offering a deal on Valvoline synthetic for like $60 so I tried that; not sure if that's a coincidence or not. I did read some lesser oils can cause oil dropplets in the combustion chamber, but not sure.

Has anyone seen this issue before? Any help would be appreciated!

Log: https://datazap.me/u/terryeaton/log-...og=0&data=3-21

Plugs should be gapped at 0.22 for 1 step colder NGK 97506, from what I read, try that.

Have you changed your coils to Eldor ones?

[Saif2018]

Originally Posted by JunkyardDogg

I didn't read codes and this was my first run in a couple years. The ses light came on and the car was shaking and vibrating on acceleration after the run. Sounds like misfires.

You need to read codes, misfires should show on it,

If it's misfires its usually plugs/coils or injectors,

[Quick335XI]

Originally Posted by Saif2018

Plugs should be gapped at 0.22 for 1 step colder NGK 97506, from what I read, try that.

Have you changed your coils to Eldor ones?

Yes on Eldor, just recently. As for gaping the place the changed the plugs said they put them at .020 that's what NGK suggests, but thinking of trying .018

[Saif2018]

Originally Posted by Quick335XI

Yes on Eldor, just recently. As for gaping the place the changed the plugs said they put them at .020 that's what NGK suggests, but thinking of trying .018

Are you using 1 step colder plugs or the 2 step ones?

Unless your running Stage 2/Hybrid turbos, should be using 1 step colder plugs or Bosch OEM ones.

I read tuners recommending 0.022-0.023 for 1 step colder NGK plugs,

https://www.evolveautomotive.com/ngk...5-s55-s63.html

0.018 is recommended for high boost applications according to some tuners, would try 0.022 first, otherwise I'd replace them with Bosch OEM ones if your on stock turbos.

[Quick335XI]

Originally Posted by Saif2018

Are you using 1 step colder plugs or the 2 step ones?

Unless your running Stage 2/Hybrid turbos, should be using 1 step colder plugs or Bosch OEM ones.

I read tuners recommending 0.022-0.023 for 1 step colder NGK plugs,

https://www.evolveautomotive.com/ngk...5-s55-s63.html

0.018 is recommended for high boost applications according to some tuners, would try 0.022 first, otherwise I'd replace them with Bosch OEM ones if your on stock turbos.

2 step colder at .020 These are pure stage 2 high flows, around 27psi

[Saif2018]

Originally Posted by Quick335XI

2 step colder at .020 These are pure stage 2 high flows, around 27psi

Ok, in that case your gap setting seems correct, 0.20,

Have you checked your injectors ?

[Quick335XI]

Originally Posted by Saif2018

Ok, in that case your gap setting seems correct, 0.20,

Have you checked your injectors ?

New... how do you check injectors anyway?

[Saif2018]

Originally Posted by Quick335XI

New... how do you check injectors anyway?

Check plugs to see if they wet or smell of fuel, next pull all injectors out and check to see if its blocked, from carbon build up etc

[EvanP246]

Originally Posted by EvanP246

Hi everyone. Here is my first OTS E30 log, tell me what you think.

https://datazap.me/u/evanp246/mhd-e3...0-11&zoom=3-72

My Car is a 2012 DCT N55 e92 (UK Market)
I have full bolt ons:

CSF intercooler
VRSF catless downpipe
VRSF Charge pipe
BMS Intake

Our pump fuel here in Barbados is about the same as ACN91 and I am using Fuse Racing Fuel E85. My mix is about a 3/4 tank of pump with the rest topped off with E.

Car feels strong, observed slight wheel spin in the damp in 4th during the pull.

Here is a pic of the car:

Attachment 2509630

Any more input on this? I I have read that 100% duty cycle or close to it is normal with this boost level on a pwg N55.

[Emilime75]

Originally Posted by EvanP246

Any more input on this? I I have read that 100% duty cycle or close to it is normal with this boost level on a pwg N55.

You might have better luck posting in the N55 sub-forum. This thread focuses on the N54.

[Quick335XI]

Originally Posted by Saif2018

Check plugs to see if they wet or smell of fuel, next pull all injectors out and check to see if its blocked, from carbon build up etc

We pulled the plugs last weekend they looked great; turned out to be more crappy work from the shop I used to take my car to, they soldered wires that eventually came loose and it was causing the PI to intermittently cut out and not even work. The Vu brothers fixed that all up real good this weekend, car is running amazing now, latest log:

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

[Saif2018]

Originally Posted by Quick335XI

We pulled the plugs last weekend they looked great; turned out to be more crappy work from the shop I used to take my car to, they soldered wires that eventually came loose and it was causing the PI to intermittently cut out and not even work. The Vu brothers fixed that all up real good this weekend, car is running amazing now, latest log:

https://datazap.me/u/terryeaton/log-...og=0&data=3-21

Ah man, dodgy workmanship is a big pain in the but, glad you got it sorted.