One Frustrated V2er

MrRipfrog · 02-04-2008, 02:50 PM

I do have the factory oil cooler installed. And while the problem may be elevated with heat, limp mode definitely occurs when the engine is cool. Of course I don't floor it when the engine's cold but when I was recording my datalogs, the engine had not yet reached full operating temperature and limp mode was induced in 3rd gear and not 2nd. When the engine was at operating temperature, limp mode was induced in 2nd gear. All at redline.

So while temperature is a factor in this equation and all of the above mentioned very good performance options, the root of the problem still resides and I believe it has to do with my finicky car and the tune itself. Like Shiv mentioned earlier, he has something for me. Hopefully it works!

tmw139 · 02-04-2008, 03:48 PM

Quote:

Originally Posted by shiv@vishnu

hi there... I do have a fix for you. Unfortunately Im in LA right now and I won't be able to email it to you until I get my laptop hooked up to an Internet connectio (I'm on my phone right now). I tried to email it to you yesterday early morning before I left for LA but my network at home was down. Please Pm me you email addy and I can send you something tomorrow.

Shiv

Has this happened yet?

I am having the same issue with my 535i.

I had to use the LBT map with 1.47 too, not sure if this would be related as V2 was supposed to treat the limp issue at redline differently than V1.

Vince@ V K Motorwerks · 02-04-2008, 04:04 PM

Tried something last night seem to work for a little bit only got 2 limp modes out of like 6-10pulls on top of 3rd gear. I started my tq settings at 90 up to 6000 RPM's then dropped it to 80% from 6000-8000rpms. The car still pulled strong but no limps until my oil temps were at 270 that from me doing these pulls from 90-100 back down to 85-100 down to 85-100 back to back a whole bunch of times. once I got to 270 the limp mode happened twice. Let the car cool down to 210 then no problems however, we started to get snow flurries so I called it a night. Too cold and foggy to try today have to wait until the weather reaches in the 40's again.

HERES ANOTHER THEORY OF MINE: could it be possiable that very cold temps entereing the temps could be causeing the misfires. Im not a tuner but could it be possiable that that density of cold air in 40 degrees or below could be too dense to the point where the fuel and spark may have to be modified?

ALSO a question for the guys with the issue. DO YOU HAVE SPORTS PACKAGE ON YOUR CARS? I dont thats why im asking.

MrRipfrog · 02-04-2008, 05:16 PM

Quote:

Originally Posted by tmw139

Has this happened yet?

I am having the same issue with my 535i.

I had to use the LBT map with 1.47 too, not sure if this would be related as V2 was supposed to treat the limp issue at redline differently than V1.

Not yet. Shiv is supposed to get back into town tomorrow (Tuesday).

MrRipfrog · 02-04-2008, 05:18 PM

Quote:

Originally Posted by Chitown335i

ALSO a question for the guys with the issue. DO YOU HAVE SPORTS PACKAGE ON YOUR CARS? I dont thats why im asking.

I do have the sports package.

tmw139 · 02-04-2008, 06:08 PM

Quote:

Originally Posted by Chitown335i

Tried something last night seem to work for a little bit only got 2 limp modes out of like 6-10pulls on top of 3rd gear. I started my tq settings at 90 up to 6000 RPM's then dropped it to 80% from 6000-8000rpms. The car still pulled strong but no limps until my oil temps were at 270 that from me doing these pulls from 90-100 back down to 85-100 down to 85-100 back to back a whole bunch of times. once I got to 270 the limp mode happened twice. Let the car cool down to 210 then no problems however, we started to get snow flurries so I called it a night. Too cold and foggy to try today have to wait until the weather reaches in the 40's again.

The limp modes on my car seem to be temperature related as well. Usually no limp modes unless pushing the car hard for an extended period of time.

I run 93 octane and have the settings at 92% across the board.

Quote:

Originally Posted by Chitown335i

ALSO a question for the guys with the issue. DO YOU HAVE SPORTS PACKAGE ON YOUR CARS? I dont thats why im asking.

I have the sport automatic with sport package.

Vince@ V K Motorwerks · 02-04-2008, 07:08 PM

Hmmm...Okay another question, If the issue turns out to be boost related, Is there anyway to make our cars handle boost better or more efficently? I had V1.47 but the LBT map and It solved my issue. However, even if I have 80% tq across the board I still have the same issue, but the weird thing is that my boost is higher at 80% then at 92%, WTF?

midlife · 02-04-2008, 07:27 PM

Quote:

Originally Posted by tmw139

Has this happened yet?

I am having the same issue with my 535i.

I had to use the LBT map with 1.47 too, not sure if this would be related as V2 was supposed to treat the limp issue at redline differently than V1.

1/ why did u have to use the LBT map, were u at very high altitude??
and except for limiting max boost pressure, how does the LBT map differ from the regular map??
2/ the max sea level boost of proceeed is like 15psi, what is it on the LBT map?

thanks

tmw139 · 02-04-2008, 07:38 PM

Quote:

Originally Posted by midlife

1/ why did u have to use the LBT map, were u at very high altitude??
and except for limiting max boost pressure, how does the LBT map differ from the regular map??
2/ the max sea level boost of proceeed is like 15psi, what is it on the LBT map?

thanks

1/ I used the LBT map with 1.47 to avoid the limp mode at the top of the rev range right before the shift. I am not at high altitude at all (Maryland).

I don't believe the LBT map differed at all from the regular map besides slightly lowering the boost pressure at the top of the rev range (~0.5 psi).

2/ We are allowed to shoot for a maximum of 15 psi by adjusting the torque settings of V2, yes.

V1.47 did not have adjustable torque settings, thus the second 1.47LBT map which tapered boost to a greater extent at the top of the rev range.

I believe the max boost of 1.47 was somewhere around 11 or 12 psi.

vase330 · 02-04-2008, 09:00 PM

Quote:

Originally Posted by tmw139

1/ I used the LBT map with 1.47 to avoid the limp mode at the top of the rev range right before the shift. I am not at high altitude at all (Maryland).

I don't believe the LBT map differed at all from the regular map besides slightly lowering the boost pressure at the top of the rev range (~0.5 psi).

2/ We are allowed to shoot for a maximum of 15 psi by adjusting the torque settings of V2, yes.

V1.47 did not have adjustable torque settings, thus the second 1.47LBT map which tapered boost to a greater extent at the top of the rev range.

I believe the max boost of 1.47 was somewhere around 11 or 12 psi.

It says right there on your signature. You are in Afghanistan, blasting around Kabul in you Ferrari Enzo. Now you are suffering limp mode? Are you sure you didn't piss off someone who decided to put some mule pee in your gass tank?

tmw139 · 02-04-2008, 10:28 PM

Quote:

Originally Posted by vase330

It says right there on your signature. You are in Afghanistan, blasting around Kabul in you Ferrari Enzo. Now you are suffering limp mode? Are you sure you didn't piss off someone who decided to put some mule pee in your gass tank?

Ah, but it's VP109 Race Mule Pee... Unleaded, of course.

02-04-2008, 02:50 PM	#23
MrRipfrog Another 13 Rep 175 Posts Drives: Vespa GTS Join Date: Oct 2006 Location: Los Angeles, CA iTrader: (0)	I do have the factory oil cooler installed. And while the problem may be elevated with heat, limp mode definitely occurs when the engine is cool. Of course I don't floor it when the engine's cold but when I was recording my datalogs, the engine had not yet reached full operating temperature and limp mode was induced in 3rd gear and not 2nd. When the engine was at operating temperature, limp mode was induced in 2nd gear. All at redline. So while temperature is a factor in this equation and all of the above mentioned very good performance options, the root of the problem still resides and I believe it has to do with my finicky car and the tune itself. Like Shiv mentioned earlier, he has something for me. Hopefully it works! __________________
	Appreciate 0 Quote

02-04-2008, 04:04 PM	#25
Vince@ V K Motorwerks Lieutenant Colonel 148 Rep 1,738 Posts Drives: 01 Black 911 Turbo, 09 X5 Join Date: May 2007 Location: Bloomingdale, IL iTrader: (0)	Tried something last night seem to work for a little bit only got 2 limp modes out of like 6-10pulls on top of 3rd gear. I started my tq settings at 90 up to 6000 RPM's then dropped it to 80% from 6000-8000rpms. The car still pulled strong but no limps until my oil temps were at 270 that from me doing these pulls from 90-100 back down to 85-100 down to 85-100 back to back a whole bunch of times. once I got to 270 the limp mode happened twice. Let the car cool down to 210 then no problems however, we started to get snow flurries so I called it a night. Too cold and foggy to try today have to wait until the weather reaches in the 40's again. HERES ANOTHER THEORY OF MINE: could it be possiable that very cold temps entereing the temps could be causeing the misfires. Im not a tuner but could it be possiable that that density of cold air in 40 degrees or below could be too dense to the point where the fuel and spark may have to be modified? ALSO a question for the guys with the issue. DO YOU HAVE SPORTS PACKAGE ON YOUR CARS? I dont thats why im asking.
	Appreciate 0 Quote

02-04-2008, 07:08 PM	#29
Vince@ V K Motorwerks Lieutenant Colonel 148 Rep 1,738 Posts Drives: 01 Black 911 Turbo, 09 X5 Join Date: May 2007 Location: Bloomingdale, IL iTrader: (0)	Hmmm...Okay another question, If the issue turns out to be boost related, Is there anyway to make our cars handle boost better or more efficently? I had V1.47 but the LBT map and It solved my issue. However, even if I have 80% tq across the board I still have the same issue, but the weird thing is that my boost is higher at 80% then at 92%, WTF?
	Appreciate 0 Quote