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Author Topic: Boost not meeting requested even at 95% WGDC  (Read 26567 times)
majorahole
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« on: March 17, 2015, 07:41:36 AM »

thus why im putting it here in the noob section.

on med9 if the specified boost is where im wanting it, but actual wont meet it, does that point to hardware??
i can attach logs, but they ARE VCDS!!
the thing is this is after going through a lot of troubleshooting on the mechanical side for excessive crankcase pressure, causing oil out of my valve cover and oil cap, and also burning oil at full boost. turned out it was a clogged up breather tube from the oil filter housing to the pcv valve. when that was happening it was meeting requested. now it isn't.

thanks for any insight
« Last Edit: March 20, 2015, 11:08:54 AM by nyet » Logged
ddillenger
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« Reply #1 on: March 17, 2015, 10:00:48 AM »

thus why im putting it here in the noob section.

on med9 if the specified boost is where im wanting it, but actual wont meet it, does that point to hardware??
i can attach logs, but they ARE VCDS!!
the thing is this is after going through a lot of troubleshooting on the mechanical side for excessive crankcase pressure, causing oil out of my valve cover and oil cap, and also burning oil at full boost. turned out it was a clogged up breather tube from the oil filter housing to the pcv valve. when that was happening it was meeting requested. now it isn't.

thanks for any insight


When actual boost won't meet requested boost, is N75 DC at 95 percent? if it is---->Hardware. If it's not---->PID.
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majorahole
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« Reply #2 on: March 17, 2015, 10:27:51 AM »

won't it only go to 95 if the I limiter is set up to 95 tho?
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majorahole
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« Reply #3 on: March 17, 2015, 10:29:33 AM »

I'm gonna log it tho anyway. I also found my rear breather tube came loose too, not sure if that would really matter tho
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majorahole
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« Reply #4 on: March 18, 2015, 07:17:54 AM »

won't it only go to 95 if the I limiter is set up to 95 tho?
nevermind that.

so its not getting to 95, and therefore my PID. where does one start with stock turbo/wastegate? KFLDIMX or KFLDRL?
and maybe before that, it will only request 2550 at first, then slightly below that ie 2540,2530,2520, which is not a big deal as i dont want the full 2550 anyways, but could that point to the reason im not getting the full 95% from wgdc?
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nyet
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« Reply #5 on: March 18, 2015, 11:13:39 AM »

KFLDIMX or KFLDRL?

Both.
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majorahole
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« Reply #6 on: March 19, 2015, 03:59:09 PM »

Both.
ok, I adjusted them. now I'm getting 95% and still not meeting specified boost.
I'll look for leaks, any suggestions on most common places?? I know I've found oil around the lower seals on the intercooler pipes, but I replaced those last summer. along with the rev d diverter valve.
might make another thread fir that in the correct place!
thanks guys
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nyet
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« Reply #7 on: March 19, 2015, 10:46:37 PM »

Most common (this should be a FAQ lol it applies to just about all turbo cars):

  • Intake leak (pressure test)
  • DV leak (compare ps_w to actual boost)
  • Collapsing inlet (pretty much all 1.8ts suffer from this)
  • Faulty N75 or wg not holding (unhook wg line so it is at atm and see if you get boost.. carefully!)
  • Clogged cats
  • Turbo lady
« Last Edit: March 20, 2015, 11:07:47 AM by nyet » Logged

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vwaudiguy
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« Reply #8 on: March 20, 2015, 08:40:20 AM »

Turbo lady

I need to find one of these.
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« Reply #9 on: March 20, 2015, 10:39:37 AM »

I need to find one of these.

Here you go

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vwaudiguy
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« Reply #10 on: March 20, 2015, 10:44:20 AM »

 Grin Grin Grin
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ddillenger
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« Reply #11 on: March 20, 2015, 10:46:29 AM »

I have one as well.
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prj
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« Reply #12 on: March 20, 2015, 12:30:04 PM »

nevermind that.

so its not getting to 95, and therefore my PID. where does one start with stock turbo/wastegate? KFLDIMX or KFLDRL?
and maybe before that, it will only request 2550 at first, then slightly below that ie 2540,2530,2520, which is not a big deal as i dont want the full 2550 anyways, but could that point to the reason im not getting the full 95% from wgdc?

What turbo is this, that you are requesting 1.5 bar from? Just curious.
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majorahole
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« Reply #13 on: March 20, 2015, 12:38:26 PM »

What turbo is this, that you are requesting 1.5 bar from? Just curious.
stock k03 on my BPY
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prj
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« Reply #14 on: March 20, 2015, 12:44:36 PM »

stock k03 on my BPY

Pardon my french, but WTF are you doing?
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