MS Stage 2 Intake and MS Pulley Independent Dyno Results and Data Logs

Black Gold · 03-19-2012, 07:13 AM

Quote:

Originally Posted by Rekrul

So you think it is running lean mainly due to the intake then? I mean I'm not at all knowledgeable in this realm. Would things like cat deletes and pulleys, make the car run leaner as well?

P.s. Big thanks to Kenny! You are a good man for doing such a thing.

Anything that affects fueling or air intake in the car can affect AFR.

A leaner AFR can result from a cat delete or a properly flowing air intake. Both mods allow the engine to bring in more air and get out more air through the motor, essentially allowing faster airflow through the engine.

If fueling is not increased, then the AFR will be leaner as a result.

Hope this makes sense

And yes, we should have logged IAT. I wasnt aware of the tools capabilities with respect to logging IAT, and we missed out on that one. We will be sure to log IAT next time we do the test, which may be a while.

It was a really busy and hectic week, so Im just glad Richard was able to get with me to get it done.

Sales@Evolve · 03-19-2012, 08:32 AM

The change in airflow or expelling of exhaust gases needs to be huge for the DME not to be able to alter AFR.

Black Gold · 03-19-2012, 08:52 AM

Quote:

Originally Posted by Sal@Evolve

The change in airflow or expelling of exhaust gases needs to be huge for the DME not to be able to alter AFR.

because the AFR is "target based" on this car, correct?

so it works to adapt the fueling to adjust for any increase or decrease in airflow to reach the pre-set targeted AFR?

Robmaster · 03-19-2012, 08:57 AM

damn! i think pully will be my next mod!

Black Gold · 03-19-2012, 10:12 AM

I'm happy to help. Fortunately, I had some good assistance and had the means to do this test that I know many of us wanted to see.

I am very surprised by the results, and am looking forward to seeing what Sal and evolve come up with on the test of the intake, and of course our results frm our own independent test of the intake when we get time.

The car feels good and smooth to drive, and the car is running strong. Overall, it was a very worthwhile experience for a number of reasons.

SeanGee · 03-19-2012, 10:54 AM

Great results KP! Can't wait to ride in her man. Soon to come. Congrats on the results!

PS: Great info!!

Rekrul · 03-19-2012, 11:26 AM

Quote:

Originally Posted by Sal@Evolve

The change in airflow or expelling of exhaust gases needs to be huge for the DME not to be able to alter AFR.

Why is his car leaning then? His mods are fairly conservative.

Sales@Evolve · 03-19-2012, 01:58 PM

Quote:

Originally Posted by Rekrul

Why is his car leaning then? His mods are fairly conservative.

It may not be running leaner anymore.

The difference is so small and without the full data nothing can be said.

The DRF files also do not have AFR.

Mark - how was the AFR measured here? Through OBDII?

What exactly was being measured? What parameter was selected in the BT menu if this was through OBDII?

Rekrul · 03-19-2012, 07:43 PM

Quote:

Originally Posted by Sal@Evolve

It may not be running leaner anymore.

The difference is so small and without the full data nothing can be said.

The DRF files also do not have AFR.

Mark - how was the AFR measured here? Through OBDII?

What exactly was being measured? What parameter was selected in the BT menu if this was through OBDII?

Interesting. As soon as I'm out of warranty, I will likely be buying a tune from you chaps.

corrado79 · 03-19-2012, 11:57 PM

Quote:

Originally Posted by KennyPowers

The car feels good and smooth to drive, and the car is running strong. Overall, it was a very worthwhile experience for a number of reasons.

Any side effects of the pulley? Accessories like P/S and A/C working like normal?

aka_phox · 04-02-2012, 11:23 AM

bump

Dave07997S · 04-02-2012, 12:15 PM

Quote:

Originally Posted by corrado79

Any side effects of the pulley? Accessories like P/S and A/C working like normal?

I have the AFE pulley, no issues at all.

Dave

BPMSport · 04-02-2012, 04:10 PM

Very interested in how AFR was logged.

Also, as Sal pointed out, Intake Air Temp is an important variable here.

Lower temperatures will cause the car to advance timing.

The original post is excellent, thank you for all of the graphs and for going through the time to perform the test.

Verify · 05-30-2012, 09:38 PM

This is a great read. I guess we never got an answer on how afr was read?

I would love to do this kind of information gathering myself, currently looking for a BT tool (unless there are other options?) What is iat called in the software?

BPMSport · 05-30-2012, 11:53 PM

Quote:

Originally Posted by corrado79

Any side effects of the pulley? Accessories like P/S and A/C working like normal?

You'll notice a slight tightness of the steering at very low engine speeds - such as the RPM's dipping under idle while engaging the clutch. Other than that, I have had zero issues and have had the pulley on there for more than 30K miles.

I have heard from a couple techs that sometimes it causes a 'jumping up and down' of RPM's at idle on cold start, but can not confirm if that's directly attributed to the pulley. My car doesn't really do it.

Baggy_M: IAT should be called Intake Air Temperature in the BT Software.

03-19-2012, 08:32 AM	#24
Sales@Evolve BimmerPost Supporting Vendor 92 Rep 1,064 Posts Drives: Slow Join Date: Feb 2008 Location: Luton, Bedfordshire iTrader: (0)	The change in airflow or expelling of exhaust gases needs to be huge for the DME not to be able to alter AFR.
	Appreciate 0 Quote

03-19-2012, 08:57 AM	#26
Robmaster Colonel 151 Rep 2,757 Posts Drives: 2010 E82 135, 2005 E87 130i Join Date: Apr 2007 Location: Switzerland iTrader: (3)	damn! i think pully will be my next mod!
	Appreciate 0 Quote

03-19-2012, 10:12 AM	#27
Black Gold Major General 592 Rep 5,396 Posts Drives: M3 Join Date: Oct 2010 Location: Texas iTrader: (15)	I'm happy to help. Fortunately, I had some good assistance and had the means to do this test that I know many of us wanted to see. I am very surprised by the results, and am looking forward to seeing what Sal and evolve come up with on the test of the intake, and of course our results frm our own independent test of the intake when we get time. The car feels good and smooth to drive, and the car is running strong. Overall, it was a very worthwhile experience for a number of reasons. __________________
	Appreciate 0 Quote

03-19-2012, 10:54 AM	#28
SeanGee Chugga Chugga Choo Choo 14 Rep 143 Posts Drives: E92 M3 Join Date: Dec 2010 Location: Lafayette, LA iTrader: (2)	Great results KP! Can't wait to ride in her man. Soon to come. Congrats on the results! PS: Great info!!
	Appreciate 0 Quote

04-02-2012, 11:23 AM	#33
aka_phox Captain 81 Rep 639 Posts Drives: 2011 M3 Convertilble Join Date: Jun 2010 Location: AZ iTrader: (0)	bump __________________ '11.5 SG E93/6MT/ALL BOXES CHECKED BLACK GRILL/BLACK SIDE GILLS/15% TINT/PAINTED REFLECTORS/SPACERS/ANGEL iBRIGHTS/20'' VOSSEN CV3/VINYL WRAPPED SHADOW LINE TRIM/ETS-POWER TUNE/ ///M-FLIGHT MEMBER
	Appreciate 0 Quote

04-02-2012, 04:10 PM	#35
BPMSport BimmerPost Supporting Vendor 3387 Rep 7,542 Posts Drives: Harrop M3 / F10 M5 / F82 M4 Join Date: Apr 2008 Location: SoCal iTrader: (9) Garage List 2000 BMW M5 [0.00] 1990 BMW 735i Turbo [0.00] 2008 BMW M3 [7.50] 2015 BMW M3 [0.00] 2015 BMW M5 [0.00]	Very interested in how AFR was logged. Also, as Sal pointed out, Intake Air Temp is an important variable here. Lower temperatures will cause the car to advance timing. The original post is excellent, thank you for all of the graphs and for going through the time to perform the test. __________________ -----\| Like us on Facebook \| Instagram \|\| Tuning Information \| Remote Coding \|----- ----Visit us at www.BPMSport.com - Emotion. Driven. \| Toll Free: (888) 557-5133---- Last edited by BPMSport; 04-03-2012 at 02:04 AM..
	Appreciate 0 Quote

05-30-2012, 09:38 PM	#36
Verify Captain 23 Rep 638 Posts Drives: M3 Join Date: Mar 2012 Location: MD-NY iTrader: (1)	This is a great read. I guess we never got an answer on how afr was read? I would love to do this kind of information gathering myself, currently looking for a BT tool (unless there are other options?) What is iat called in the software?
	Appreciate 0 Quote