Noticed something Wierd (procede v4)

Clap135 · 07-15-2010, 08:07 PM

So my labonte failsafe fried (lasted a whole 3 or so months) Taking it out required me to unplug the vac line to the boost canisters. Finished up take the failsafe off line and forgot to plug in the vac line to the boost canisters. Went for a drive, no boost, car sounds like a raspy v6 and no limps no check engine lights NOTHING. I found that a little wierd, I would expect the car to throw a limp if zero boost is reached.

OpenFlash · 07-15-2010, 08:20 PM

Depending on DME software version, you wont immediately throw a limp for underboost. Some version require that a certain boost error be achieved for a certain period of time before the limp is tripped. Nothing to do with v4 as it will behave the same way in valet/stock mode.

shiv

cn555ic · 07-15-2010, 08:54 PM

Quote:

Originally Posted by Clap135

So my labonte failsafe fried (lasted a whole 3 or so months) Taking it out required me to unplug the vac line to the boost canisters. Finished up take the failsafe off line and forgot to plug in the vac line to the boost canisters. Went for a drive, no boost, car sounds like a raspy v6 and no limps no check engine lights NOTHING. I found that a little wierd, I would expect the car to throw a limp if zero boost is reached.

Where did you install the failsafe module??

Clap135 · 07-15-2010, 09:05 PM

by the drivers side strut tower, however some wiring went through the front of the car.

cn555ic · 07-15-2010, 09:06 PM

Quote:

Originally Posted by Clap135

by the drivers side strut tower, however some wiring went through the front of the car.

Just wondering how and why it fried....what do you think caused it?? i.e wiring problem, heat from engine bay or just a defective module?

Clap135 · 07-15-2010, 09:21 PM

I don't know, but i noticed that it wasnt working, so I unplugged it and blew throught it thinking it might be clogged, plugged it back in, heard sparks and instant white smoking coming out of the unit.

As far as the unplugged vac hoses, I stayed in it through 2 gears (1st/2nd) and NADA. Just found that a little wierd.

Jeff@TopGearSolutions · 07-15-2010, 10:32 PM

The member t"hemyst" had a labonte unit faile for no reason and was only a few weeks old.

IMO something is up with those units.

Anyway, car sounds pretty good with no boost, especially open throttle body.... like an E36 M3 HAHA

Oh and I through a limp mode right away with open TB (charge pipe blew off). I guess its the luck of the draw.

07-15-2010, 08:07 PM	#1
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	Noticed something Wierd (procede v4) So my labonte failsafe fried (lasted a whole 3 or so months) Taking it out required me to unplug the vac line to the boost canisters. Finished up take the failsafe off line and forgot to plug in the vac line to the boost canisters. Went for a drive, no boost, car sounds like a raspy v6 and no limps no check engine lights NOTHING. I found that a little wierd, I would expect the car to throw a limp if zero boost is reached.
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07-15-2010, 08:20 PM	#2
OpenFlash 1737 Rep 17,960 Posts Drives: A Lot Join Date: Sep 2006 Location: SF Bay, CA iTrader: (0) Garage List 2018 Ducati Panigal ... [0.00] 2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00]	Depending on DME software version, you wont immediately throw a limp for underboost. Some version require that a certain boost error be achieved for a certain period of time before the limp is tripped. Nothing to do with v4 as it will behave the same way in valet/stock mode. shiv
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07-15-2010, 09:05 PM	#4
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	by the drivers side strut tower, however some wiring went through the front of the car.
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07-15-2010, 09:21 PM	#6
Clap135 Brigadier General 102 Rep 3,460 Posts Drives: 2009 N54 Join Date: Jul 2009 Location: Sticky's Mom House iTrader: (1)	I don't know, but i noticed that it wasnt working, so I unplugged it and blew throught it thinking it might be clogged, plugged it back in, heard sparks and instant white smoking coming out of the unit. As far as the unplugged vac hoses, I stayed in it through 2 gears (1st/2nd) and NADA. Just found that a little wierd.
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07-15-2010, 10:32 PM	#7
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	The member t"hemyst" had a labonte unit faile for no reason and was only a few weeks old. IMO something is up with those units. Anyway, car sounds pretty good with no boost, especially open throttle body.... like an E36 M3 HAHA Oh and I through a limp mode right away with open TB (charge pipe blew off). I guess its the luck of the draw.
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