V2 w/ bypass plugs = accurate baseline?

jpsimon · 01-22-2008, 09:37 AM

Can I install the V2, put in the bypass plugs then jump on the dyno to get an accurate baseline run? Will the car act exactly as stock with the bypass plugs in?

1. dyno V2 w/ bypass plugs in
2. take out bypass plugs and drive around for 30-50 miles to let V2 re-adapt.
3. dyno V2

will this work fine?

WilyB · 01-22-2008, 09:58 AM

Or do the opposite: Jump of the dyno with V2 and then while the car is still on the dyno, install the bypass plugs and dyno again.

NPDAN · 01-22-2008, 10:02 AM

Yes it will act as it is stock. Then, when you take the bypass plugs off, make sure you do at least (5) solid 3rd gear pulls while your re-adapting it...

Sniz · 01-22-2008, 10:02 AM

I think it should. I did that except I put in the bypass plugs once I got to the dyno, did my baseline run and then took out the bypass plugs and reran immediately. No adaptation. I still got a good idea of what my car was doing. Your way would certainly be more accurate.

Sniz · 01-22-2008, 10:03 AM

Quote:

Originally Posted by WilyB

Or do the opposite: Jump of the dyno with V2 and then while the car is still on the dyno, install the bypass plugs and dyno again.

+1

jpsimon · 01-22-2008, 10:04 AM

oh good call..

1. install v2, let it adapt, goto dyno
2. get dynoed with v2
3. install bypass plugs and dyno *

* will I need to let the ECU re-adapt to the lack of a v2? Could I just unplug the battery for however long to reset the ECU?

bmwzimmer · 01-22-2008, 12:06 PM

Depends on your goal. Would you prefer a accurate V2 Dyno and slightly less accurate stock dyno or you prefer an accurate stock dyno and a less accurate V2 Dyno??

jpsimon · 01-22-2008, 12:19 PM

I'd rather have a more accurate V2 dyno. I think I'm going to install the v2, do some datalogging and get the settings up to 94-95% (i'm on 93 octane over here on the east) and drive around for a few days... then get dynoed, then put in the bypass plugs and reset the ecu and get a baseline.

01-22-2008, 09:37 AM	#1
jpsimon Team Zissou 3163 Rep 10,200 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	V2 w/ bypass plugs = accurate baseline? Can I install the V2, put in the bypass plugs then jump on the dyno to get an accurate baseline run? Will the car act exactly as stock with the bypass plugs in? 1. dyno V2 w/ bypass plugs in 2. take out bypass plugs and drive around for 30-50 miles to let V2 re-adapt. 3. dyno V2 will this work fine?
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01-22-2008, 09:58 AM	#2
WilyB Captain 19 Rep 671 Posts Drives: E92 335 Join Date: Jan 2007 Location: USA iTrader: (0) Garage List 1991 BMW 325iC [0.00] 2008 Porsche Cayenn ... [0.00] 1990 Ferrari Mondial T [0.00]	Or do the opposite: Jump of the dyno with V2 and then while the car is still on the dyno, install the bypass plugs and dyno again.
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01-22-2008, 10:02 AM	#3
NPDAN Colonel 100 Rep 2,572 Posts Drives: AW DCT M3 Join Date: Feb 2007 Location: So.Cal iTrader: (7) Garage List 2008 E92 M3 [8.00] 07' E92 335i [0.00]	Yes it will act as it is stock. Then, when you take the bypass plugs off, make sure you do at least (5) solid 3rd gear pulls while your re-adapting it... __________________
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01-22-2008, 10:02 AM	#4
Sniz Lieutenant General 682 Rep 10,584 Posts Drives: e92 335 - gone // e36 M3 turbo Join Date: Mar 2007 Location: Ellicott City, MD iTrader: (1)	I think it should. I did that except I put in the bypass plugs once I got to the dyno, did my baseline run and then took out the bypass plugs and reran immediately. No adaptation. I still got a good idea of what my car was doing. Your way would certainly be more accurate. __________________
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01-22-2008, 10:04 AM	#6
jpsimon Team Zissou 3163 Rep 10,200 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	oh good call.. 1. install v2, let it adapt, goto dyno 2. get dynoed with v2 3. install bypass plugs and dyno * * will I need to let the ECU re-adapt to the lack of a v2? Could I just unplug the battery for however long to reset the ECU?
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01-22-2008, 12:06 PM	#7
bmwzimmer Major 41 Rep 1,084 Posts Drives: 335 Join Date: Jan 2007 Location: 91 octane states iTrader: (0)	Depends on your goal. Would you prefer a accurate V2 Dyno and slightly less accurate stock dyno or you prefer an accurate stock dyno and a less accurate V2 Dyno??
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01-22-2008, 12:19 PM	#8
jpsimon Team Zissou 3163 Rep 10,200 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I'd rather have a more accurate V2 dyno. I think I'm going to install the v2, do some datalogging and get the settings up to 94-95% (i'm on 93 octane over here on the east) and drive around for a few days... then get dynoed, then put in the bypass plugs and reset the ecu and get a baseline.
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