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      05-16-2017, 11:27 PM   #1
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Strapped my M3 to a Mustang Dyno Today.

Thought I'd share a dyno run of my M3 on a Mustang Dyno from this morning just to add to some information that's already out there for our motors. The goal was to see how the AA tune is running on my car - smoothness, any concerning power/tq dips, AFR which is the single most important thing to see how safe a tune is in my opinion - and see if there are any power delivery issues that should be addressed given that I'm always putting it through it's paces. It's a good idea to know how your motor is doing with aftermarket engine management if you're subjecting it to such conditions like most of us do, and as BMW M intended.

About the car:
  • 2012 M3 6MT, 22k miles/35k KM
  • Rogue Engineering non-resonated test pipes
  • Dinan intake
  • BMW M Performance exhaust
  • AA tune with 8600 RPM rev limiter, cold-start delete

Important numbers:
  • 358 whp (a stock E92 M3 DCT made 330whp on the same dyno)
  • 260 wtq
  • min. AFR = 11.1
  • 64.5 F ambient temp











The AFRs look great, even leaving a little power at the end of the RPM range. If AA was to lean that out a little there should be a bit more HP to be had up top, you can see the TQ fall off immediately when the AFRs hit this area and the HP curves is rather jagged as the car is fighting it.

If I was to extrapolate these numbers to a typical dynojet assuming the most conservative 10% conversion factor, the car is at 394 whp and 305 wtq. For comparison sakes, a stock E92 M3 DCT made 330 whp on this dyno and a catless header + intake + exhaust S54 Z3 made 270 whp before me. Take from that what you will.

Impressions:
I've got approx. 6k miles on this tune and I have to say it runs flawlessly! There has never been a single hiccup at idle/cruising/WOT/part throttle or anything at all. The car drives buttery smooth right off idle and all the way to the fuel cut-off for the rev limiter, and it feels absolutely savage in the power delivery and throttle response compared to a stock E92 M3 (I've driven mine and a stock 6MT ZCP back to back multiple times). Whether AA or BPM or whomever, an ECU tune and test pipes absolutely turn up the violence in this car's power delivery and is an absolute must-have mod, but we already knew that...

Thanks for checking it out
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      05-17-2017, 10:15 AM   #2
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post the graph and info. nice vids.
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      05-17-2017, 10:49 AM   #3
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Quote:
Originally Posted by Patrón View Post
post the graph and info. nice vids.
Thanks. The dyno graph and related information is right in the very first post immediately after the videos.
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      05-17-2017, 10:55 AM   #4
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Quote:
Originally Posted by 6ixSpd View Post
The dyno graph and related information is right in the very first post immediately after the videos.
Don't worry, he's just drunk
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      05-17-2017, 11:28 AM   #5
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Nice stuff. Mustangs read very low, I would say 15%. 358whp is nothing to scoff at, especially considering its essentially just a stage 2 car.
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      05-17-2017, 12:10 PM   #6
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358 x 1.15 = 412. You don't really think an E9xM3 with test pipes, intake, rear exhaust and tune would make 412 rwhp SAE on a Dynojet on 93 pump gas? None have ever come close. I think 403 rwhp SAE on a Dynojet is the pump gas record. Most of these cars with bolt on mods range from about 375-395 rwhp SAE on a Dynojet. This one might be at the top end of that range but the OP would have to run on a DJ to know for sure. There are a bunch of Mustang results in the dyno database that would make the better comparisons. As noted, Mustangs tend to give lower numbers but at least the comparison would be more accurate and the OP would know where his results fit in the Mustang range for similarly modded cars.
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      05-17-2017, 01:59 PM   #7
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Quote:
Originally Posted by BrewRifle View Post
Don't worry, he's just drunk
for some reason all the photos etc show up on my computer but that one image is an error. lol

but i was really drunk Saturday night.
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      05-17-2017, 02:00 PM   #8
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And dyno numbers are so subjective, vary so greatly for so many reasons. Mine has swung 30/40hp+- just from different dynojets.
Really only useful way is same same car same day same dyno same temps with different mods to see gains.
Comparing numbers from different cars, dynos thousands of miles apart, different temps, different settings, different operatiors etc does not exactly give a very good comparison/data. Point is don't get to hung up on vague numbers
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      05-17-2017, 03:12 PM   #9
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Quote:
Originally Posted by pbonsalb View Post
358 x 1.15 = 412. You don't really think an E9xM3 with test pipes, intake, rear exhaust and tune would make 412 rwhp SAE on a Dynojet on 93 pump gas? None have ever come close. I think 403 rwhp SAE on a Dynojet is the pump gas record. Most of these cars with bolt on mods range from about 375-395 rwhp SAE on a Dynojet. This one might be at the top end of that range but the OP would have to run on a DJ to know for sure. There are a bunch of Mustang results in the dyno database that would make the better comparisons. As noted, Mustangs tend to give lower numbers but at least the comparison would be more accurate and the OP would know where his results fit in the Mustang range for similarly modded cars.
I meant that as a general rule of thumb in my experience over hundreds of dyno pulls in several different cars. You extrapolate 412hp with the 15% correction and say no one has ever come close, then you state the record is only 9hp less lol. I don't know about you, but that sounds pretty close to me. Then, after using a dyno "record" as a measuring stick, you go on to explain that dyno measurements really are moot unless compared to similar cars on the same dyno. I hope you see the irony in that. Lastly, to say the test is discredited because the results did not fit your expectations isn't exactly fair either. What is interesting is that he did post what stock M3's dyno at 330 so in theory he made ~30hp which is a healthy amount of extra oomph at the wheels from intake, exhaust and tune.
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      05-17-2017, 03:42 PM   #10
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Only about 3 cars have broken 400 rwhp SAE Dynojet, so 412 rwhp SAE Dynojet would be truly extraordinary. It's very unlikely given all the other similar cars tested. That 9 rwhp jump from 403 rwhp is actually huge. I think it will take an E85 car to get that.

What we do know is that the OP's car made 358 with mods and tune on a Mustang. There was no baseline for this car and dyno testing of these cars shows a pretty wide range for stock ones. I would not do any extrapolations, but I would compare it to other Mustang to see if it is in the ballpark.
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      05-17-2017, 03:55 PM   #11
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Dude, thank you so much for posting.

I'm in the 416, and also about to get my AA tune however I wanted to baseline my car on a dyno before I get the tune.

Where did you do your dyno? Also where do you get your car serviced?


Thanks
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      05-17-2017, 06:40 PM   #12
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Quote:
Originally Posted by MShift View Post
Nice stuff. Mustangs read very low, I would say 15%. 358whp is nothing to scoff at, especially considering its essentially just a stage 2 car.
Hello all, first off, thanks for sharing and congrats OP...sounds like you have a healthy car. I post mostly over on M3F, but I have seen a few dyno sheets in my day, and purely speculating here...because we really don't have any details of how the dyno was operated afterall. Mustang dyno's (unlike DJ's) can be run in either a 'loaded' or an 'unloaded' state, and the percentage of load can be varied to suit the dyno operators needs. Sooo, yes, Mustang dyno's can read up to approximately 15% lower than your avg. DJ. However, when operated in an unloaded state, they will more approximate DJ numbers. (I've actually seen a Mustang record more power than a DJ on one occasion, soooo....yes, they can be 'manipulated'.) I'm not saying that's 100% the case here, but I would say IMO it's a def possibility. Some Mustang dyno operators/shops have acquiesced to recalibrating their dyno's to approximate DJ numbers due to losing disappointed customers to higher reading DJ's. Nice car either way OP!

Last edited by stosh1; 05-18-2017 at 09:59 AM..
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      05-18-2017, 12:09 AM   #13
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Quote:
Originally Posted by MShift View Post
Nice stuff. Mustangs read very low, I would say 15%. 358whp is nothing to scoff at, especially considering its essentially just a stage 2 car.
Thanks, the motor sure pulls like a raped ape all the way to redline, and it's undeniable how much better a FBO M3 drives than a stock one. It's a great car to drive, the difference really is night and day from when she was stock.
Quote:
Originally Posted by pbonsalb View Post
358 x 1.15 = 412. You don't really think an E9xM3 with test pipes, intake, rear exhaust and tune would make 412 rwhp SAE on a Dynojet on 93 pump gas? None have ever come close. I think 403 rwhp SAE on a Dynojet is the pump gas record. Most of these cars with bolt on mods range from about 375-395 rwhp SAE on a Dynojet. This one might be at the top end of that range but the OP would have to run on a DJ to know for sure. There are a bunch of Mustang results in the dyno database that would make the better comparisons. As noted, Mustangs tend to give lower numbers but at least the comparison would be more accurate and the OP would know where his results fit in the Mustang range for similarly modded cars.
Eh, I'm not shooting for any records. I'm merely sharing what this car made with the current mods on a dyno where a DCT M3 made 330whp and a FBO S54 MZ3 (stock tune though) made 272whp. Those are good enough comparisons and in-line with what these two cars usually make on a Mustang. Extrapolations are just that: extrapolations - not an exact scientific conclusion to make.
Quote:
Originally Posted by Patrón View Post
for some reason all the photos etc show up on my computer but that one image is an error. lol

but i was really drunk Saturday night.
Lol! Sounds like. A good Saturday.
Quote:
Originally Posted by squartus View Post
Point is don't get to hung up on vague numbers
I'm not.
Quote:
Originally Posted by MShift View Post
What is interesting is that he did post what stock M3's dyno at 330 so in theory he made ~30hp which is a healthy amount of extra oomph at the wheels from intake, exhaust and tune.
Which is pretty much in line with what a test pipes, tune, intake, exhaust M3 should make over a stock one. So I'm happy the comparison from a stock one vs. my setup actually makes senses with the numbers for both.

Quote:
Originally Posted by pbonsalb View Post
Only about 3 cars have broken 400 rwhp SAE Dynojet, so 412 rwhp SAE Dynojet would be truly extraordinary. It's very unlikely given all the other similar cars tested. That 9 rwhp jump from 403 rwhp is actually huge. I think it will take an E85 car to get that.

What we do know is that the OP's car made 358 with mods and tune on a Mustang. There was no baseline for this car and dyno testing of these cars shows a pretty wide range for stock ones. I would not do any extrapolations, but I would compare it to other Mustang to see if it is in the ballpark.
For shits and giggles I'll dyno it on a DJ this summer as well, and try and get other stock/modded M3s to join. It'll be a fun comparison no matter how you look at it, even if I'm lacking a true baseline.
Quote:
Originally Posted by Sandye90m3 View Post
Dude, thank you so much for posting.

I'm in the 416, and also about to get my AA tune however I wanted to baseline my car on a dyno before I get the tune.

Where did you do your dyno? Also where do you get your car serviced?


Thanks
PM sent!
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      10-05-2020, 07:40 AM   #14
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Low wHP on dyno mustang

Hey all (from Singapore here),

Just ran my e92 M3 on a Mustang Dyno AWD earlier after getting a custom ECU tuning done.

Mustang dyno chart: https://ibb.co/t413Nc5

Other current mods include:
- Akrapovic cat back exhaust
- eventuri intake system
- GTS DCT tuning

The wHP from the mustang dyno increased from 267 to 287hp after ECU tuning, and the crank HP increased from 355 to 383hp.

Just wondering why the wHP is very low compared to those i see on the mustang dyno database - their wHP are in the ranges of 300-370hps!

Could it be an issue with the dyno itself? or the car?

Last edited by Sgbimmer8888; 10-05-2020 at 08:37 AM..
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      10-05-2020, 09:20 AM   #15
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Awesome numbers!

Looking at the graph, looks like you get a bit rich after 7300rpm, I wonder if that's the tune or sniffer issue? I might be wrong but shouldn't the AFR be a consistent number throughout the powerband?
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      10-05-2020, 09:21 AM   #16
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Quote:
Originally Posted by Sgbimmer8888 View Post
Hey all (from Singapore here),

Just ran my e92 M3 on a Mustang Dyno AWD earlier after getting a custom ECU tuning done.

Mustang dyno chart: https://ibb.co/t413Nc5

Other current mods include:
- Akrapovic cat back exhaust
- eventuri intake system
- GTS DCT tuning

The wHP from the mustang dyno increased from 267 to 287hp after ECU tuning, and the crank HP increased from 355 to 383hp.

Just wondering why the wHP is very low compared to those i see on the mustang dyno database - their wHP are in the ranges of 300-370hps!

Could it be an issue with the dyno itself? or the car?
I think something is out of wack in your graph. torque and horsepower should be crossing at 5252 rpm. Also, there's no way you can put down 300+ wheel torque NA.
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      10-05-2020, 10:04 AM   #17
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Quote:
Originally Posted by Sgbimmer8888 View Post
The wHP from the mustang dyno increased from 267 to 287hp after ECU tuning, and the crank HP increased from 355 to 383hp.

Perhaps those are kW/Nm numbers.
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      10-05-2020, 10:26 AM   #18
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Quote:
Originally Posted by Sgbimmer8888 View Post
Hey all (from Singapore here),

Just ran my e92 M3 on a Mustang Dyno AWD earlier after getting a custom ECU tuning done.

Mustang dyno chart: https://ibb.co/t413Nc5

Other current mods include:
- Akrapovic cat back exhaust
- eventuri intake system
- GTS DCT tuning

The wHP from the mustang dyno increased from 267 to 287hp after ECU tuning, and the crank HP increased from 355 to 383hp.

Just wondering why the wHP is very low compared to those i see on the mustang dyno database - their wHP are in the ranges of 300-370hps!

Could it be an issue with the dyno itself? or the car?
Quote:
Originally Posted by tdott View Post
Perhaps those are kW/Nm numbers.
I thought hp is the standard measurement on these mustang dynos? or not?
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      10-05-2020, 10:30 AM   #19
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Quote:
Originally Posted by nishfish87 View Post
Awesome numbers!

Looking at the graph, looks like you get a bit rich after 7300rpm, I wonder if that's the tune or sniffer issue? I might be wrong but shouldn't the AFR be a consistent number throughout the powerband?
Thanks! i thought my numbers were extremely subpar, given what i see on the m3 dyno database - most listed in there have wHP north of 330!
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      10-05-2020, 10:48 AM   #20
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does anyone know whether the hp numbers listed on the s65 mustang dyno database reflect the whp or crank hp?

Here: http://www.s65dynos.com/DynoDB.php?vType=1&dynoID=3
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      10-05-2020, 12:28 PM   #21
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Quote:
Originally Posted by exVtekGuy View Post
I think something is out of wack in your graph. torque and horsepower should be crossing at 5252 rpm. Also, there's no way you can put down 300+ wheel torque NA.
I think the graphs do not cross at 5252 because the torque and hp scales are not the same.

I agree 323 lbs rwtq is not possible. Could be a wheelspin spike or maybe there is some other explanation.

383 rwhp is also unlikely from a tune, cat back and intake.

But you can compare to other mustang dynos that were set up exactly like the one you ran on. If you can find any.

The main success is your before and after runs. Regardless of the dyno, you gained power.
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      10-05-2020, 12:54 PM   #22
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Quote:
Originally Posted by Sgbimmer8888 View Post
I thought hp is the standard measurement on these mustang dynos? or not?
It is not standard across the globe.

HP/tq is standard in North America.
kW/Nm is used in certain parts of the world.
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