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      10-18-2012, 04:21 PM   #23
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Quote:
Originally Posted by CanAutM3 View Post
I would personally trust the dynapack more in terms of accuracy and repeatability as they are actual "brake" dynos similar to what we use in the aerospace industry and what auto manufacturers use to develop engines.

From what I understand, dynojets and dynapacks would use very different calculation methods to establish power ratings. I believe overall drivetrain inertia can have much less impact on a dynapack since it is a brake dyno and does not rely on a drum's inertia to load the engine, it all depends how fast/slow the operator sets the acceleration rate. Further, there is also no loss due to tire deformation and slippage at the tire/drum interface. IMO it is normal and expected to see different absolute numbers on both dynos.
Exactly. It was an interesting experience for me since I'm so used to using DynoJets and Dyno Dynamics.

I will be heading back to that dyno in the next week or so to finalize the Stage II X5M tune. I wish we got the gains that car gets! I'm estimating 80WHP and 120FT/LBS torque.

Edit:
Gains were ~100whp and ~125wtq..
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Last edited by Mike Benvo; 11-24-2012 at 02:43 PM.
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      10-19-2012, 12:52 PM   #24
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great stuff Mike, I am running a tuned 240e from Sal and have been really pleased with Power and smoothness...car is a whole new monster.

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      11-20-2012, 09:43 PM   #25
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Mike, super interesting and congrats on the results! What intake do you have on your car?
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      11-21-2012, 04:03 PM   #26
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damn! impressive results
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      11-21-2012, 05:51 PM   #27
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Cool Deal!!! Glad you dynoed at Church's. They are 5 min from me. When i get my car back, i'll swing by and dyno my car also. Gains look great!
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      11-22-2012, 06:11 AM   #28
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Nice write up, Mike!

Last night Mike upgraded my cars to 240e as well as added his stage 2 tune. I hope to have a write up in a few weeks which compares AA's HFC tune with his stage 2 tune. However, at this point, the "butt dyno" did immediately notice an improvement in mid-range torque (AA vs BPMSport).
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      11-22-2012, 10:47 AM   #29
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Hope to see more naturally aspirated 400+ rwhp dyno jet SAE stock block M3s! Just one so far and that is Mike's car.
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      11-22-2012, 12:51 PM   #30
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So essentially a catless system and tune yeilds 80 wheel hp? That just does not add up. Average whp is 350 if generous, especially with 91 octane. Your tune and the akro system and a pulley and you get 430 whp. I bet that dyno was converting it to engine hp with a correction factor. Just no way you are laying down 430 whp man
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      11-22-2012, 03:12 PM   #31
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Quote:
Originally Posted by Munit View Post
So essentially a catless system and tune yeilds 80 wheel hp? That just does not add up. Average whp is 350 if generous, especially with 91 octane. Your tune and the akro system and a pulley and you get 430 whp. I bet that dyno was converting it to engine hp with a correction factor. Just no way you are laying down 430 whp man
Don't for get 300 tq also, even my friend's ess vt1 only put down 305 tq.
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      11-22-2012, 03:13 PM   #32
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Quote:
Originally Posted by M3SQRD View Post
Nice write up, Mike!

Last night Mike upgraded my cars to 240e as well as added his stage 2 tune. I hope to have a write up in a few weeks which compares AA's HFC tune with his stage 2 tune. However, at this point, the "butt dyno" did immediately notice an improvement in mid-range torque (AA vs BPMSport).
What year is your car? Have you dyno it before mike's tune?
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      11-22-2012, 03:31 PM   #33
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Looking good!
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      11-22-2012, 04:48 PM   #34
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Quote:
Originally Posted by Valentino_RS
Quote:
Originally Posted by M3SQRD View Post
Nice write up, Mike!

Last night Mike upgraded my cars to 240e as well as added his stage 2 tune. I hope to have a write up in a few weeks which compares AA's HFC tune with his stage 2 tune. However, at this point, the "butt dyno" did immediately notice an improvement in mid-range torque (AA vs BPMSport).
What year is your car? Have you dyno it before mike's tune?
I tuned his 2009 M3 (previously AA tuned) and his wife's 2012. Both cars were under 240E so I updated them as well before flashing the tune.

Lots of replies on this thread and I will respond in the next couple days.

At thanksgiving with the family using iphone app.Happy holidays everyone
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      11-22-2012, 05:28 PM   #35
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Nice work Mike! She is a screamer!!
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      11-22-2012, 05:31 PM   #36
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Quote:
Originally Posted by Munit View Post
So essentially a catless system and tune yeilds 80 wheel hp? That just does not add up. Average whp is 350 if generous, especially with 91 octane. Your tune and the akro system and a pulley and you get 430 whp. I bet that dyno was converting it to engine hp with a correction factor. Just no way you are laying down 430 whp man
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      11-22-2012, 06:03 PM   #37
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don't forget that brake dynos read higher than tire/rim dynos. I think Mike baselined at 385WHP if I'm not mistaken.
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      11-22-2012, 06:47 PM   #38
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True, Active saw a significant gains from downsizing to 18's from 20's. So Mike is right in line with most tunes with bolt-on mods.


Quote:
Originally Posted by Superfly_M3 View Post
don't forget that brake dynos read higher than tire/rim dynos. I think Mike baselined at 385WHP if I'm not mistaken.
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      11-23-2012, 09:52 AM   #39
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Quote:
Originally Posted by Valentino_RS View Post
What year is your car? Have you dyno it before mike's tune?
My car is an '09. No dyno with AA tune. Will get a dyno with Mike's tune after I have my 3.62 diff installed.

My '12 was stock (231e) before Mike tuned it. Even my wife, who has no idea what was done to her car , noticed it now has much improved offline performance (smoother throttle, improved initial response) and mid-range torque (not her words - had to translate) - this was during her daily work commute so no WOT, redline comments yet...
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      11-23-2012, 01:42 PM   #40
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Quote:
Originally Posted by Mike Benvo View Post
I tuned his 2009 M3 (previously AA tuned) and his wife's 2012. Both cars were under 240E so I updated them as well before flashing the tune.

Lots of replies on this thread and I will respond in the next couple days.

At thanksgiving with the family using iphone app.Happy holidays everyone
Mike, what soft- and hardware do you use to flash your car, other than WinOLS for editing the maps?
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      11-23-2012, 03:14 PM   #41
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I just got my DCT Software updated at the dealer my ess tune was wiped, I'm want to try Mike's tune. 430whp/300TQ that is very close to FI. But first, I would really like to see some of you guy's dyno result before/after from Mike's tune.
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      11-23-2012, 08:45 PM   #42
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Chasing a particular number is not realistic. If your car is dynoing 330whp with an ESS tune, don't expect another tuner to be able to pull significantly more. Could 340 or 350 be realistic? Sure.

My car was dynoed on a HUB dyno with the wheels OFF. Obviously there are losses associated with the wheels and tires, so to compare wheel HP from a dynojet/dyno dynamics to a hub dyno is yet another pointless exercise. Look at the delta gains. In the original post the green line was a stock 2011 M3, blue was my car with the bolt on mods, and pink was tuned with the same mods.

I just finished tuning a stroker motor about 15 minutes ago. We'll have some pretty cool stuff coming up in the near future - forget dynojet, dynapack, and dyno dynamics, I'll be using a Maha dyno from now on. That's as close to the real deal as you can get. If you're chasing horsepower, I'd prefer you choose another company to tune your car. Smoothness, power delivery, features, safety and reliability are my PRIMARY concerns. Horsepower and torque and second. I can make ANY of my M3 tunes more powerful by reducing safety margins. Many people want a dyno queen, but at what expense?

My tunes have been track, street, and dyno tested in EXTREME conditions (over 100F ambient temperatures), 300+ F oil temperates, and 110 + C coolant temperatures. If you want something more powerful, feature rich, and as reliable as BMW's factory software, you've come to the right place. If you're looking for a pretty chart with shiny lines I'd prefer if you used another company.

Thanks for your comments everyone, I hope to keep bringing you more exciting developments.

Edit: http://www.m3post.com/forums/showpos...1&postcount=23 Added X5M dyno to post #23
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Last edited by Mike Benvo; 11-23-2012 at 09:49 PM.
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      11-23-2012, 08:51 PM   #43
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Quote:
Originally Posted by Mike Benvo View Post
Chasing a particular number is not realistic. If your car is dynoing 330whp with an ESS tune, don't expect another tuner to be able to pull significantly more. Could 340 or 350 be realistic? Sure.

My car was dynoed on a HUB dyno with the wheels OFF. Obviously there are losses associated with the wheels and tires, so to compare wheel HP from a dynojet/dyno dynamics to a hub dyno is yet another pointless exercise. Look at the delta gains. In the original post the green line was a stock 2011 M3, blue was my car with the bolt on mods, and pink was tuned with the same mods.

I just finished tuning a stroker motor about 15 minutes ago. We'll have some pretty cool stuff coming up in the near future - forget dynojet, dynapack, and dyno dynamics, I'll be using a Maha dyno from now on. That's as close to the real deal as you can get.
Great post for several reasons!

1) Realistic expectations and honesty.
2) MAHA dynos are the shiznit!
3) YOU TUNED A STROKER MOTOR?!?!?!?!?!?!?!?!?!?!?!
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      11-23-2012, 10:07 PM   #44
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