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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Whats goin on w my V2?? Boost leak?



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      12-15-2007, 05:24 PM   #1
Sniz
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Whats goin on w my V2?? Boost leak?

I'm running the same boost in valet as I am at 94%.........

I have my rpms set to 1800rpms..I'm going to try and set it to 300rpms to see if it makes a difference. I'm revving past 2000rpms as soon as I start the car so it should be running the V2 map, not valet.

Valet - 3rd gear 33 degrees ambient



94% - 2nd and 3rd gear 33 degrees ambient

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      12-15-2007, 05:47 PM   #2
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Its always a good idea for you(along with anyone who drives a Turbo Car) to go over all connections periodically and tighten them with a Wrench (not just a screwdriver)
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      12-15-2007, 06:12 PM   #3
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Quote:
Originally Posted by CanadianTSi View Post
Its always a good idea for you(along with anyone who drives a Turbo Car) to go over all connections periodically and tighten them with a Wrench (not just a screwdriver)
I'll be tearing things apart tomorrow to check all fittings unless I can find a software fix for whats going on.
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      12-15-2007, 06:15 PM   #4
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You're still on valet mode.

You're not revving past 1800rpm quickly enough. Either that, or you aren't holding it there for the 1 second it needs to trigger the performance map. If you set it to 300rpm, you'll get your boost back.

Shiv
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      12-15-2007, 06:20 PM   #5
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Quote:
Originally Posted by shiv@vishnu View Post
You're still on valet mode. Your not revving past 1800rpm quickly enough. Or you aren't holding it there for the 1 second it needs to trigger the performance map. If you set it to 300rpm, you'll get your boost back.

Shiv
thanks Shiv...didn't realize you have to hold it for 1 second over 1800rpm if thats what you have the valet set to. I was just blipping the throttle on start up.

Time for a test drive
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      12-15-2007, 06:21 PM   #6
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Quote:
Originally Posted by Sniz View Post
thanks Shiv...didn't realize you have to hold it for 1 second over 1800rpm if thats what you have the valet set to. I was just blipping the throttle on start up.

Time for a test drive
Yep. Please report back your findings

FYI: http://www.e90post.com/forums/showthread.php?t=101769

Shiv

Last edited by OpenFlash; 12-15-2007 at 07:38 PM..
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      12-15-2007, 07:47 PM   #7
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Thanks again for the tech tidbit thread....I went in and selected Debug7.

I went out to my car w/ my new computer and tried to attach it to my procede, at which point I did something wrong and killed my car. 15 minutes later, every hazard light known to man, and my old laptop and I got it worked back out. I had to reload everything and do the firmware update again.....that sucked.

So long story short, I reloaded v2.0.2 at the "stock" 90% and went out for some datalogging. No adaptation time. this is what I logged for a 3rd gear run.

I think I have a boost leak.

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      12-15-2007, 07:53 PM   #8
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Quote:
Originally Posted by Sniz View Post
Thanks again for the tech tidbit thread....I went in and selected Debug7.

I went out to my car w/ my new computer and tried to attach it to my procede, at which point I did something wrong and killed my car. 15 minutes later, every hazard light known to man, and my old laptop and I got it worked back out. I had to reload everything and do the firmware update again.....that sucked.

So long story short, I reloaded v2.0.2 at the "stock" 90% and went out for some datalogging. No adaptation time. this is what I logged for a 3rd gear run.

I think I have a boost leak.
No, I really don't think you have a boost leak. Unless you've been messing with your IC pipes or bypass valves, don't worry about that.

Couple things:
First, there is no reason to reload any firmware if you have already done it before. And if you do it while the car is running, you'll induce all sorts of codes. They can all be cleared. But that is why we suggest to do the upgrade with the ignition ON (but engine not running).

Second, if you select Debug 7 (and move it over to the right side of the screen using the ">>" button, you'll see it listed right under RPM and BOOST (on the bottom left of the datalog screen). It is not there in the screen shot you posted.

I suggest you just put the valet RPM switch back to the original default setting (300rpm) and do another run. This will essentially force the PROcede to run the performance map.

Shiv
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      12-15-2007, 08:02 PM   #9
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Quote:
Originally Posted by shiv@vishnu View Post
No, I really don't think you have a boost leak. Unless you've been messing with your IC pipes or bypass valves, don't worry about that.

Couple things:
First, there is no reason to reload any firmware if you have already done it before. And if you do it while the car is running, you'll induce all sorts of codes. They can all be cleared. But that is why we suggest to do the upgrade with the ignition ON (but engine not running).

Second, if you select Debug 7 (and move it over to the right side of the screen using the ">>" button, you'll see it listed right under RPM and BOOST (on the bottom left of the datalog screen). It is not there in the screen shot you posted.

I suggest you just put the valet RPM switch back to the original default setting (300rpm) and do another run. This will essentially force the PROcede to run the performance map.

Shiv
Sorry I forgot to mention that I did reset the rpm value to 300. I'll make sure I have the debug 7 selected for the run. I was out testing when you made that thread.

Also, I have installed a new IC so the couplings could be starting to loosen, see here: http://www.e90post.com/forums/showthread.php?t=97209

I'm going to power down the car overnight and have it again tomorrow....if its still at 10psi and below I'm going to get back under the car and tighten everything up again.
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      12-15-2007, 08:03 PM   #10
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Oh.. you just installed an IC? Yeah... most likely book leak at this point
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      12-15-2007, 08:08 PM   #11
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Quote:
Originally Posted by shiv@vishnu View Post
Oh.. you just installed an IC? Yeah... most likely book leak at this point
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      12-16-2007, 11:25 AM   #12
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how do we attach datalog file? what icon please?

Quote:
Originally Posted by Sniz View Post
I'm running the same boost in valet as I am at 94%.........

I have my rpms set to 1800rpms..I'm going to try and set it to 300rpms to see if it makes a difference. I'm revving past 2000rpms as soon as I start the car so it should be running the V2 map, not valet.

Valet - 3rd gear 33 degrees ambient



94% - 2nd and 3rd gear 33 degrees ambient

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      12-16-2007, 12:20 PM   #13
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Quote:
Originally Posted by ontopofm View Post
how do we attach datalog file? what icon please?
its very easy. you can do this for any program you ever have open on Windows....Mac might be the same process.

1) Make sure the screen you want to copy is currently showing on your computer.
2) Hit the Print Screen button (on my laptop its labeled 'PrtSC'). You DO NOTneed to hold down shift, ctrl, alt....etc.
3) Open paint, which can be found in your Start menu under accesories.
4) With a clean/new file opened in paint, hit Ctrl + 'V' (this is a shortcut for the paste feature) and your copied screenshot will be pasted. Now just save the new paint file somewhere as a .jpeg file and then upload to your preferred photo hosting website. I used www.photobucket.com , its free and quick.


Done.
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      12-16-2007, 12:23 PM   #14
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update - 12/16

Still not holding proper boost, currently running at default 90%. I will not have any time to get under the hood today, Christmas party tonight. I will have to tackle it tomorrow at some point and see what I can find.

It is quite annoying knowing I have all this power under my right foot but just a loose fitting is keeping me from really having some fun. OH well, might be for the better given the current weather....i dont want to end up in a ditch.
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      12-16-2007, 12:27 PM   #15
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One thing to keep in mind if you do in fact have a boost leak is that they are very hard on the Turbo. While the Motor is only seeing 9psi, Xpsi is leaking out of the IC pipes along the way so the Turbo may actually be pushing 15psi+ to try and compensate.
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      12-16-2007, 12:33 PM   #16
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thanks

Quote:
Originally Posted by Sniz View Post
its very easy. you can do this for any program you ever have open on Windows....Mac might be the same process.

1) Make sure the screen you want to copy is currently showing on your computer.
2) Hit the Print Screen button (on my laptop its labeled 'PrtSC'). You DO NOTneed to hold down shift, ctrl, alt....etc.
3) Open paint, which can be found in your Start menu under accesories.
4) With a clean/new file opened in paint, hit Ctrl + 'V' (this is a shortcut for the paste feature) and your copied screenshot will be pasted. Now just save the new paint file somewhere as a .jpeg file and then upload to your preferred photo hosting website. I used www.photobucket.com , its free and quick.


Done.
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      12-16-2007, 01:07 PM   #17
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Quote:
Originally Posted by CanadianTSi View Post
One thing to keep in mind if you do in fact have a boost leak is that they are very hard on the Turbo. While the Motor is only seeing 9psi, Xpsi is leaking out of the IC pipes along the way so the Turbo may actually be pushing 15psi+ to try and compensate.
thanks for the heads up, I want to fix this asap.....and keep the boosting down to a minimum. Would I necessarily hear the boost leak? Would sound like air escaping if it was a major leak right?
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      12-16-2007, 01:15 PM   #18
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Quote:
Originally Posted by CanadianTSi View Post
One thing to keep in mind if you do in fact have a boost leak is that they are very hard on the Turbo. While the Motor is only seeing 9psi, Xpsi is leaking out of the IC pipes along the way so the Turbo may actually be pushing 15psi+ to try and compensate.
I question this statement! Shiv anythought on this.
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      12-16-2007, 01:42 PM   #19
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Regardless I'm going to run the car in valet mode until I get everything tightened up. No sense in going to higher boost w/ what I'm thinking is a boost leak until I have ruled that out.
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      12-16-2007, 06:29 PM   #20
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Try the bypass plugs. If the leak is that severe, you should throw a code.
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      12-16-2007, 06:49 PM   #21
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Shiv..... can you help i am running version 2 with the latest map 2.02MT and i have the torque set to 94% up to 7000RPM then i have it at 100% up to 8500RPM. i keep getting the engine symbol on my dash and it goes into like a limp mode. when i turn the car of and on again its ok again. any ideads? is 100% to high for the car at high RPM?
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      12-16-2007, 06:53 PM   #22
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Wow! If you're running that thing up to 8500 rpms, you may have bigger things to worry about than limp mode!
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