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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sun, Jun-05-2011, 11:24:11 PM   #41
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Default Re: Official Dyno Thread

WOW...that is SO MUCH easier than undoing the valve cover. Dang it...I was paying dyno by the hour and that would have saved a lot of time, haha...
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Old Sun, Jun-05-2011, 11:45:15 PM   #42
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Default Re: Official Dyno Thread

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Originally Posted by flipm3 View Post
WOW...that is SO MUCH easier than undoing the valve cover. Dang it...I was paying dyno by the hour and that would have saved a lot of time, haha...
I pay just for the session. I was in and out in less than 30 minutes while getting 6 pulls in. The shop I go to definitely knows BMW's, which helps. I tried going to a shop before that specializes in the JDM drift scene and they spent about 30 minutes trying to figure out how to tie my car down in the rear and finally settled on the rear lower control arm I told them no and left.
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Old Mon, Jun-06-2011, 12:03:14 AM   #43
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Default Re: Official Dyno Thread

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Originally Posted by fdub View Post
I pay just for the session. I was in and out in less than 30 minutes while getting 6 pulls in. The shop I go to definitely knows BMW's, which helps. I tried going to a shop before that specializes in the JDM drift scene and they spent about 30 minutes trying to figure out how to tie my car down in the rear and finally settled on the rear lower control arm I told them no and left.
I definitely know EXACTLY what you mean. I was in the same exact situation as you were. The only local dynojet location that was available at the time was an RX7 shop. He said that he worked on some BMWs, but he definitely didn't seem the most comfortable around them. It took him forever to remove and put back on the valve cover. Their wideband sensors seems pretty jacked up and he didn't even mention that he could have plugged it into a bung in my headers. On top of that, cooling was absolutely terrible. He had a single tiny fan...not ideal for 4 hours of tuning time.

I was forced to go with them considering that I had scheduled time with Sal already. In addition, I was only in town for a week so I had to rush to get everything done.

Through this whole experience, I learned that dyno-ing a car is not as simple as I thought. Fortunately, I was referred to a better shop in IL, actually where MattMan got his dynos done (a few posts above this). Apparently they are pretty familiar with BMWs and have acceptable dyno facilities.

This coming August when I'm back in town, I plan on doing a few new dynos:
  • SS V2 Stepped Headers + CPI Euro200
  • SS V2 Stepped Headers + CPI Euro200 + evolve-R Tune
  • SS V2 Stepped Headers + CPI PowerPipe
  • SS V2 Stepped Headers + CPI PowerPipe + Evolve Airbox/tune

Hopefully everything pans out well this time.
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Old Mon, Jun-06-2011, 04:09:20 AM   #44
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Default Re: Official Dyno Thread

Here's mine.

Run 1, green - eBay headers and Agency Power Muffler.
Peak power - 281.0, Peak Torque - 233.8, AFR 13.9-10.9

Run 2, red - added AP Section 1, VS Motorsports underdrive pulleys, aFe dry intake filter, Macht Schnell elbow and running without the AC belt.
Peak power - 296.3 Peak Torque - 242.3, AFR 11.5-10.6

Run 3, blue - EPIC tune.
Peak power - 297.4, Peak Torque - 242.4, AFR 13.4-12.6



Note that all 3 runs were done at different times.
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Old Mon, Jun-06-2011, 04:34:02 AM   #45
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Default Re: Official Dyno Thread

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Originally Posted by NikolaiD View Post
Here's mine.

Run 1, green - eBay headers and Agency Power Muffler.
Peak power - 281.0, Peak Torque - 233.8, AFR 13.9-10.9

Run 2, red - added AP Section 1, VS Motorsports underdrive pulleys, aFe dry intake filter, Macht Schnell elbow and running without the AC belt.
Peak power - 296.3 Peak Torque - 242.3, AFR 11.5-10.6

Run 3, blue - EPIC tune.
Peak power - 297.4, Peak Torque - 242.4, AFR 13.4-12.6

Note that all 3 runs were done at different times.
Thanks for sharing! Your Run 1 and Run 2 clearly show that UDPs, intake elbow, and filter can make a difference!

I am assuming Run 3 includes all the other mods as well?
Also, were there any correction factor added to these runs? SAE? Sorry, I'm not too familiar with the SuperFlow dynos.
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Old Mon, Jun-06-2011, 04:48:21 AM   #46
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Default Re: Official Dyno Thread

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Originally Posted by flipm3 View Post
Thanks for sharing! Your Run 1 and Run 2 clearly show that UDPs, intake elbow, and filter can make a difference!

I am assuming Run 3 includes all the other mods as well?
Also, were there any correction factor added to these runs? SAE? Sorry, I'm not too familiar with the SuperFlow dynos.
The car was unchanged from run 2 to run 3. Nothing was added and nothing was removed. I kind of wish I would have gotten a dyno run bone stock though...
I'm not too familiar with the dyno at this point, from what I see, it automatically corrects for air temperature, barometric pressure and humidity. Not sure if it's SAE profile or not.
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Old Mon, Jun-06-2011, 05:03:44 AM   #47
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Default Re: Official Dyno Thread

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Originally Posted by NikolaiD View Post
The car was unchanged from run 2 to run 3. Nothing was added and nothing was removed. I kind of wish I would have gotten a dyno run bone stock though...
I'm not too familiar with the dyno at this point, from what I see, it automatically corrects for air temperature, barometric pressure and humidity. Not sure if it's SAE profile or not.
Thanks for the clarification. The only reason I ask about the correction factor is because your AFRs are definitely much better with the Epic tune, but it looks like you lost some power throughout the powerband. My assumption was that maybe SAE correction factor would kind of standardize the numbers despite the runs being done on different days.

Either way, I'm sure your car feels much better with the tune! It looks like Epic did a good job of leveling out your AFRs.

Thanks again for sharing.
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Old Mon, Jun-06-2011, 04:51:59 PM   #48
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Default Re: Official Dyno Thread

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Originally Posted by flipm3 View Post
Thanks for the clarification. The only reason I ask about the correction factor is because your AFRs are definitely much better with the Epic tune, but it looks like you lost some power throughout the powerband. My assumption was that maybe SAE correction factor would kind of standardize the numbers despite the runs being done on different days.

Either way, I'm sure your car feels much better with the tune! It looks like Epic did a good job of leveling out your AFRs.

Thanks again for sharing.
Yeah, the AFRs got corrected a bit, but I'm not too excited about paying close to a grand for live tuning to lose power.
I was at least thinking that if I'm not running as rich, it would improve my mpg, but there was no change.
As far as the weather goes, there was a loss of about 3-4hp even with correction. Last time it was nice and cool and this time it was hot and humid, the cars just didn't run as well, so that 1.1hp peak gain would have been maybe 3-5hp a month ago, but I don't feel that is adequate for the price.
There's a little more to the story, I might make a thread about it depending on my mood.
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Old Mon, Jun-13-2011, 04:24:22 AM   #49
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Default Re: Official Dyno Thread

Hit the dyno again yesterday with the Bimmerworld EPIC tune. I maxed out at 297hp, which is +12hp from my previous runs. I will post the plots tomorrow.
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Old Mon, Jun-13-2011, 06:11:13 AM   #50
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Default Re: Official Dyno Thread

Sorry, the 297hp run was actually 5th gear. Here are my 4th gear runs.

2004 BMW M3 - 6/11/11
- Supersprint V2 stepped headers + euro section 1 w/ 200cell cats + Bimmerworld EPIC street tune (31,400 miles)
- Dynojet dynamometer @ Carb Connection (Kirkland, WA)
- 4th gear for all runs
- 70.5 deg. F, 29.91 in-Hg, 33% humidity

Corrections
SAE: 0.98
STD: 1.00

Current power vs RPM (SAE)


Current power vs RPM (STD)


Current power vs RPM (UNC)


Current power vs road speed (SAE)


I only put about 50 miles on the tune once I received it before the dyno. I am going to do a few more runs once the car has had time to adapt, but so far I am very pleased with it. Swapping sparkplugs seems to have gotten rid of the 6500 RPM dip.
Attached Images
File Type: jpg HP & TQ vs RPM SAE.jpg (236.9 KB, 2043 views)
File Type: jpg HP & TQ vs RPM STD.jpg (237.1 KB, 1484 views)
File Type: jpg HP & TQ vs RPM UNC.jpg (235.2 KB, 1475 views)
File Type: jpg HP & TQ vs SPEED SAE.jpg (230.4 KB, 1478 views)
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Last edited by fdub; Mon, Jun-13-2011 at 06:15:01 AM.
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Discussing Official Dyno Thread in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)