VT2-500 install/build/impressions thread

iPhoneEngineer · 07-26-2011, 08:42 PM

Yeah, no doubt a few of the codes are related to the headers...

I'm quite curious about the brake booster code; perhaps the one-way valve for the brake booster was left out or improperly installed?

I haven't actually pulled codes using Rev, but don't have an SES light, so I assume that means none are set.

ZStig · 07-27-2011, 10:12 AM

Getting no signal from my primary 02 sensors, which is probably causing the whole mess. The wiring from the engine to the headers was inspected, and the sensors themselves look new. ESS thinks they're not getting power to them, so thats the next thing we're gonna check tonight/tomorrow

(staying patient)

Burn0utsRfun · 07-27-2011, 05:12 PM

Quote:

Originally Posted by Roffle Waffle

Getting no signal from my primary 02 sensors, which is probably causing the whole mess. The wiring from the engine to the headers was inspected, and the sensors themselves look new. ESS thinks they're not getting power to them, so thats the next thing we're gonna check tonight/tomorrow

(staying patient)

Try checking out the throttle potentiometers.

ZStig · 07-27-2011, 07:47 PM

Tonight, I've tracked down that I'm not getting any power to fuse #32, which is responsible for something in engine management. Hope to get more info Friday

Beedub · 07-28-2011, 02:29 AM

awesome fault finding tom!!!

fuse 32 is this install related or something that can happen to any of us???

ZStig · 07-28-2011, 09:17 AM

Thanks

. I'm gonna have the tech look at it Friday, he's booked today. My only concern is that fuse 32 might be strictly for the SMG transmission, I hope I'm wrong and its responsible for the 02 sensors too

edit: yeah, fuse 32 is only for the SMG I'm told by a BMW tech

ZStig · 07-28-2011, 01:06 PM

Did some dremel/plasti-dip work last night. I'm not sure I like the lower grill cut open like that. I may go back to stock

Beedub · 07-28-2011, 01:22 PM

Quote:

Originally Posted by Roffle Waffle

Did some dremel/plasti-dip work last night. I'm not sure I like the lower grill cut open like that. I may go back to stock

lol..... i like it!!! looks FAST even standing still

post a better pic please :-)

ZStig · 07-28-2011, 01:38 PM

fine fine. btw, the lower grill is a complete bitch to remove from the bumper

inTgr8r · 07-28-2011, 01:47 PM

JMO, but I like it with the grill better.
I like the subtle but deadly look

ZStig · 07-28-2011, 01:53 PM

yeah, I hope a new grill insn't too expensive. heh

Beedub · 07-28-2011, 04:34 PM

i wont be modding mine as i want a sleeper look..... but i really like it!! looks uber aggressive.

byron

Beedub · 07-29-2011, 05:16 PM

anything happening Re o2 sensor issues/tune issues??

ZStig · 07-30-2011, 08:28 AM

One of my o2 sensors was completely gunked up from the car running rich for whatever reason. Ran great on initial startup. On second startup CEL came on, but thankfully for just P0030 code, which is 99% for the OTHER o2 sensors. Replacing that in a few hours today, hopefully that will do it, and not eat any more $$$ O2 sensors

ZStig · 07-30-2011, 08:37 AM

Quote:

Originally Posted by Beedub

i wont be modding mine as i want a sleeper look..... but i really like it!! looks uber aggressive.

byron

Yeah, sleeper look with world war 2 fighter exhaust? ooooook

!

ZStig · 07-30-2011, 07:18 PM

autoparts store delivered wrong parts, and then closed for the day....

iPhoneEngineer · 07-30-2011, 11:28 PM

If you fouled your O2 sensor with just a single startup, mine must be completely annihilated at this point. Though I don't have any codes, perhaps it is contributing to the high-RPM power problem. Post some pictures of the old and new O2 if you can...how visually obvious was it that it was fouled?

Beedub · 07-31-2011, 10:56 AM

did any of you guys log AFRs??

just for reference im seeing 3rd gear pull @ wot see's a nice safe rich 11.3-5ish, in the higher gears like 5th a WOT situation see's a 12.5ish richening out towards the redline, checking with AJ and hans this is the perfect situation and exactly what i should be seeing.

i wish i could mount my iphone somehow to grab some shots of my gauges during some runs...... Im going to try and grab a lady friend to do the camera work for me.....
also FYI tom and iphone, my "new" s/c unit has just had its first oil change @ 500 miles, i will do it again in anothr 500 miles, this oil change has rendered the unit almost silent, @ idle you can even hear it bar the whistle the s/c makes.

ZStig · 08-01-2011, 08:51 PM

Made significant progress. The shop that installed my euro headers had put the secondary sensors in, and left the primaries out. OOPS!

Had to get 2 new primary o2 sensors, since the old ones went bad while hanging out in the air under the hood. I held off on welding in the rear 02s because I was initially told that its not necessary with the ecu tune.

Anyway, it only goes into limp mode at redline, except one time at 5k rpm. BUT not throwing any codes. So likely a tune issue, that I'll either find on the dyno on saturday or earlier if ESS sends the shop a portable unit

So at least I can ALMOST enjoy the car to the fullest... I'll try to grab some video tomorrow. Ordering a boost gauge too..

Burn0utsRfun · 08-01-2011, 10:18 PM

Quote:

Originally Posted by Roffle Waffle

Made significant progress. The shop that installed my euro headers had put the secondary sensors in, and left the primaries out. OOPS!

Had to get 2 new primary o2 sensors, since the old ones went bad while hanging out in the air under the hood. I held off on welding in the rear 02s because I was initially told that its not necessary with the ecu tune.

Anyway, it only goes into limp mode at redline, except one time at 5k rpm. BUT not throwing any codes. So likely a tune issue, that I'll either find on the dyno on saturday or earlier if ESS sends the shop a portable unit

So at least I can ALMOST enjoy the car to the fullest... I'll try to grab some video tomorrow. Ordering a boost gauge too..

Glad to hear your close to getting it running well! Must be a lot of frustration, I would be going crazy ha.

ZStig · 08-01-2011, 10:44 PM

I've been in much more stressful car situations, which taught me a lot of patience. At least the car was running more or less OK the whole time, I just couldn't drive it to its full potential.

but then again its not 100% yet, so lets see how patient I really am

iPhoneEngineer · 08-01-2011, 11:23 PM

Quote:

Originally Posted by Roffle Waffle

[...]

Had to get 2 new primary o2 sensors, since the old ones went bad while hanging out in the air under the hood. I held off on welding in the rear 02s because I was initially told that its not necessary with the ecu tune.

[...]

I've been in much more stressful car situations, which taught me a lot of patience. At least the car was running more or less OK the whole time, I just couldn't drive it to its full potential.

What do you mean...the wideband (primary) O2s were left plugged in but not installed in the exhaust? That seems pretty dicy, as I'm almost positive they have a heating circuit to bring them up to temperature. In any event, how could you tell they needed to be replaced?

I know what you mean about "more stressful" situations; I'm pretty damn worried about my kit, but it's not as bad as the time my Supra was behaving completely erratically due to a hidden, loose ECU ground

.

07-27-2011, 10:12 AM	#90
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	Getting no signal from my primary 02 sensors, which is probably causing the whole mess. The wiring from the engine to the headers was inspected, and the sensors themselves look new. ESS thinks they're not getting power to them, so thats the next thing we're gonna check tonight/tomorrow (staying patient) __________________
	0

07-27-2011, 07:47 PM	#92
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	Tonight, I've tracked down that I'm not getting any power to fuse #32, which is responsible for something in engine management. Hope to get more info Friday __________________
	0

07-28-2011, 02:29 AM	#93
Beedub Brigadier General Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK Posts: 3,510 iTrader: (0)	awesome fault finding tom!!! fuse 32 is this install related or something that can happen to any of us??? __________________ Pristine Bi-colour Ti /Bsm...z4m roadster Ess vt2-500....Perfection on wheels.
	0

07-28-2011, 09:17 AM	#94
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	Thanks . I'm gonna have the tech look at it Friday, he's booked today. My only concern is that fuse 32 might be strictly for the SMG transmission, I hope I'm wrong and its responsible for the 02 sensors too edit: yeah, fuse 32 is only for the SMG I'm told by a BMW tech __________________ Last edited by ZStig; 07-28-2011 at 10:20 AM.
	0

07-28-2011, 01:06 PM	#95
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	Did some dremel/plasti-dip work last night. I'm not sure I like the lower grill cut open like that. I may go back to stock __________________
	0

07-26-2011, 08:42 PM	#89
iPhoneEngineer Lieutenant Drives: 2007 BMW Z4 M Coupe Join Date: Jun 2010 Location: La Honda, CA Posts: 475 iTrader: (2)	Yeah, no doubt a few of the codes are related to the headers... I'm quite curious about the brake booster code; perhaps the one-way valve for the brake booster was left out or improperly installed? I haven't actually pulled codes using Rev, but don't have an SES light, so I assume that means none are set.
	0

07-28-2011, 01:38 PM	#97
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	fine fine. btw, the lower grill is a complete bitch to remove from the bumper __________________
	0

07-28-2011, 01:47 PM	#98
inTgr8r Major General Drives: 07 M Coupe Join Date: Mar 2006 Location: Toronto Posts: 7,708 iTrader: (7)	JMO, but I like it with the grill better. I like the subtle but deadly look __________________ Alpinweiss '07 M Coupe •DKF Section1•Eisenmann Sport-Ceramic Black•Fabspeed Headers•VRS Hyper-Narrow rear wing•Autosolutions SSK•APR splitter•Tekarbon headlights•StrongStrut STB•KW Clubsport•H&R ARBs c/w Turner Adj Links•Poly FCAB/RTAB•Volk Racing G2•Direzza ZII•Stoptech BBK•Vibra-Tech mtr mounts•
	0

07-28-2011, 01:53 PM	#99
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	yeah, I hope a new grill insn't too expensive. heh __________________
	0

07-28-2011, 04:34 PM	#100
Beedub Brigadier General Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK Posts: 3,510 iTrader: (0)	i wont be modding mine as i want a sleeper look..... but i really like it!! looks uber aggressive. byron __________________ Pristine Bi-colour Ti /Bsm...z4m roadster Ess vt2-500....Perfection on wheels.
	0

07-29-2011, 05:16 PM	#101
Beedub Brigadier General Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK Posts: 3,510 iTrader: (0)	anything happening Re o2 sensor issues/tune issues?? __________________ Pristine Bi-colour Ti /Bsm...z4m roadster Ess vt2-500....Perfection on wheels.
	0

07-30-2011, 08:28 AM	#102
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	One of my o2 sensors was completely gunked up from the car running rich for whatever reason. Ran great on initial startup. On second startup CEL came on, but thankfully for just P0030 code, which is 99% for the OTHER o2 sensors. Replacing that in a few hours today, hopefully that will do it, and not eat any more $$$ O2 sensors __________________
	0

07-30-2011, 07:18 PM	#104
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	autoparts store delivered wrong parts, and then closed for the day.... __________________
	0

07-30-2011, 11:28 PM	#105
iPhoneEngineer Lieutenant Drives: 2007 BMW Z4 M Coupe Join Date: Jun 2010 Location: La Honda, CA Posts: 475 iTrader: (2)	If you fouled your O2 sensor with just a single startup, mine must be completely annihilated at this point. Though I don't have any codes, perhaps it is contributing to the high-RPM power problem. Post some pictures of the old and new O2 if you can...how visually obvious was it that it was fouled?
	0

07-31-2011, 10:56 AM	#106
Beedub Brigadier General Drives: 2007 Z4 M roadster vt2-500 Join Date: Sep 2007 Location: UK Posts: 3,510 iTrader: (0)	did any of you guys log AFRs?? just for reference im seeing 3rd gear pull @ wot see's a nice safe rich 11.3-5ish, in the higher gears like 5th a WOT situation see's a 12.5ish richening out towards the redline, checking with AJ and hans this is the perfect situation and exactly what i should be seeing. i wish i could mount my iphone somehow to grab some shots of my gauges during some runs...... Im going to try and grab a lady friend to do the camera work for me..... also FYI tom and iphone, my "new" s/c unit has just had its first oil change @ 500 miles, i will do it again in anothr 500 miles, this oil change has rendered the unit almost silent, @ idle you can even hear it bar the whistle the s/c makes. __________________ Pristine Bi-colour Ti /Bsm...z4m roadster Ess vt2-500....Perfection on wheels.
	0

08-01-2011, 08:51 PM	#107
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	Made significant progress. The shop that installed my euro headers had put the secondary sensors in, and left the primaries out. OOPS! Had to get 2 new primary o2 sensors, since the old ones went bad while hanging out in the air under the hood. I held off on welding in the rear 02s because I was initially told that its not necessary with the ecu tune. Anyway, it only goes into limp mode at redline, except one time at 5k rpm. BUT not throwing any codes. So likely a tune issue, that I'll either find on the dyno on saturday or earlier if ESS sends the shop a portable unit So at least I can ALMOST enjoy the car to the fullest... I'll try to grab some video tomorrow. Ordering a boost gauge too.. __________________
	0

08-01-2011, 10:44 PM	#109
ZStig Major General Drives: VT2-500 M Roadster Join Date: Jun 2008 Location: Delray Beach, FL Posts: 7,079 iTrader: (3)	I've been in much more stressful car situations, which taught me a lot of patience. At least the car was running more or less OK the whole time, I just couldn't drive it to its full potential. but then again its not 100% yet, so lets see how patient I really am __________________
	0

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