V2 - Limp Mode

Booster · 02-16-2008, 10:05 AM

A few weeks back I was doing a highway pull in 3rd. As I shifted into 4th, I went into limp mode and the "half engine power" light came on. I turned the car and turned it back on. Limp mode was gone and the light went off.

This past Tuesday, I was on the highway having a little fun and as I floored it in 5th (around 120mph) the car just shuddered and did nothing. But as I let off a little bit, the car ran like a beast.

So, I had the car in the shop to see what the deal was with the half power light and I had "superknocking" codes on ALL 6 cylinders in the mid 4k RPM range. Also it said to replace the plugs.

I will have the plugs replaced under warranty and load a new map (January 9th or 10th version?) and start doing some datalogs. Here are my current settings

-v2
-6mt
-speed limiter removed (December 2Xth map)
-95% settings
-3-4 gallons of 100 octane on every fill up
-BMC Air Filter
-FAKE eisenmann race exhaust

bmwzimmer · 02-16-2008, 11:17 AM

You should of uploaded the Jan 10 th map that fixed that problem last month.

LambOfGod · 02-16-2008, 01:36 PM

You won't find the delimited map anymore. If you need it let me know. I have it.

tek818 · 02-16-2008, 03:31 PM

shiv recently said there is a problem with using the v1 green loom as the speed delimit wire. Take that out, load a speed-limited map, and see if the problem persists.

shyestsparks · 02-16-2008, 05:44 PM

How much is your peak boost at 95%?

FunRevn · 02-16-2008, 07:57 PM

Did you take the Procede out prior to going to the Dealer?

meinauto · 02-16-2008, 08:47 PM

Booster

Not sure if I am have something similar as I am not even sure what knocking sounds like...

I am on V2 and if I do a pull from 4th to 5th gears, I will get a limp at redline and the engine starts to run bad like it is misfiring...turn the car off and on again and it disappears. With 1.47, when I had limp modes, the engine still ran smooth but with a lot less power

Is this what you meant by shuddered? Also, can anyone describe what knocking sounds like? Shiv did say like bees in a can but that gives me the impression that it is quite high pitch?

Booster · 02-16-2008, 08:57 PM

Quote:

Originally Posted by FunRevn

Did you take the Procede out prior to going to the Dealer?

Nope. I work for the dealer...

Superknocking is the the BMW code that was stored. You can really hear a ticking noise at start-up and in 1st and 2nd gear when driving next to buildings and what not....

The shuddering was kind of like I was flooding the car. Too much fuel than the engine could handle....

I NEVER had a limp mode issue with 1.47...

02-16-2008, 10:05 AM	#1
Booster Pave The Rainforest 269 Rep 1,197 Posts Drives: Wagon Join Date: Dec 2005 Location: Norfolk, VA iTrader: (33) Garage List 2007 335i Coupe [0.00]	V2 - Limp Mode - Superknocking Codes A few weeks back I was doing a highway pull in 3rd. As I shifted into 4th, I went into limp mode and the "half engine power" light came on. I turned the car and turned it back on. Limp mode was gone and the light went off. This past Tuesday, I was on the highway having a little fun and as I floored it in 5th (around 120mph) the car just shuddered and did nothing. But as I let off a little bit, the car ran like a beast. So, I had the car in the shop to see what the deal was with the half power light and I had "superknocking" codes on ALL 6 cylinders in the mid 4k RPM range. Also it said to replace the plugs. I will have the plugs replaced under warranty and load a new map (January 9th or 10th version?) and start doing some datalogs. Here are my current settings -v2 -6mt -speed limiter removed (December 2Xth map) -95% settings -3-4 gallons of 100 octane on every fill up -BMC Air Filter -FAKE eisenmann race exhaust __________________ Sold: 2015 Pyrite Brown M3 Sold: 2020 Sunset Orange M340i Xdrive Sold: 2021 Bluestone 540i Xdrive Msport
	Appreciate 0 Tweet Quote

02-16-2008, 11:17 AM	#2
bmwzimmer Major 35 Rep 1,084 Posts Drives: 335 Join Date: Jan 2007 Location: 91 octane states iTrader: (0)	You should of uploaded the Jan 10 th map that fixed that problem last month.
	Appreciate 0 Quote

02-16-2008, 01:36 PM	#3
LambOfGod Lieutenant 14 Rep 571 Posts Drives: 335 Red Sedan Join Date: May 2007 Location: Michigan iTrader: (0)	You won't find the delimited map anymore. If you need it let me know. I have it.
	Appreciate 0 Quote

02-16-2008, 03:31 PM	#4
tek818 Lieutenant Colonel 136 Rep 1,954 Posts Drives: 2020 X3M Competition Join Date: Mar 2007 Location: Los Angeles, CA iTrader: (2) Garage List 2018 M3 ZCP [9.50]	shiv recently said there is a problem with using the v1 green loom as the speed delimit wire. Take that out, load a speed-limited map, and see if the problem persists. __________________ 2020 F97 X3M Competition (current) - 2018 F80 M3 Competition - 2015 F82 M4 - 2012 E82 135i - 2010 E92 335i - 2007 E92 335i
	Appreciate 0 Quote

02-16-2008, 05:44 PM	#5
shyestsparks Captain 24 Rep 824 Posts Drives: 335i sedan, 02 Altima VQ35DE-T Join Date: Feb 2007 Location: Ca iTrader: (5)	How much is your peak boost at 95%?
	Appreciate 0 Quote

02-16-2008, 07:57 PM	#6
FunRevn Captain 60 Rep 736 Posts Drives: 2020 M5 Join Date: Nov 2006 Location: Western Region iTrader: (0)	Did you take the Procede out prior to going to the Dealer?
	Appreciate 0 Quote

02-16-2008, 08:47 PM	#7
meinauto Private 5 Rep 89 Posts Drives: E92 335 Join Date: Jan 2007 Location: Malaysia iTrader: (1)	Booster Not sure if I am have something similar as I am not even sure what knocking sounds like... I am on V2 and if I do a pull from 4th to 5th gears, I will get a limp at redline and the engine starts to run bad like it is misfiring...turn the car off and on again and it disappears. With 1.47, when I had limp modes, the engine still ran smooth but with a lot less power Is this what you meant by shuddered? Also, can anyone describe what knocking sounds like? Shiv did say like bees in a can but that gives me the impression that it is quite high pitch?
	Appreciate 0 Quote