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      04-24-2016, 06:31 PM   #1
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Arrow TuningTech FS BMW M2 Dyno Tuning & Testing (ECU Flash)

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As many of you know we were fortunate enough to purchase a BMW M2 earlier than many. This Sunday we figured we take advantage of it and put some time in our R&D and testing because we are lucky enough to have a proper dyno facility and suffiecent amount of air to replicate close to real world environment.

Seeing how we posted one of the first dyno runs in United States, we were not sure what to make of the power. But the car made strong consistent numbers back to back. Other vendors who we all love and respect such as the guys at iND and Active Auto put identical numbers showing the car M2 is consistent across the country which was good to know that BMW got it together. We installed a custom down-pipe on our car and the gains were fairly decent perhaps because the car had less than 500 miles and was flowing very well.

The car showed 15 psi stock and we modified the factory ecu with our stage 1 tune to 17 psi. The M2 like the M4 and M5 platform is very much tuneable especially when the computer is not being tricked with piggyback that hits torque limiter or require a back end flash that requires an ecu to be taken out of the car just like ecu tuning. This motor is very strong and it does not heat soak. We did a number of back to back hard runs and the car was very consistent and impressive.

One of the benefit of ecu tuning is you can tune it on 91 or 93 without having to worry about the car pull timing and drop boost because the vehicle does not like the fuel in the car etc. We are expecting to raise the boost to 20 psi for our stage 2 tune once she reached 1k because we have noticed as the car breaks in more the numbers appear to be get stronger and we got a little lazy working on a Sunday morning.

We did some testing with 93 fuel and doing a E85 blend for a E30 mix on the dyno back to back from our initial back to back 93 runs. The car gained very little after several back to back runs. Please note we did not change the ecu parameters at all simply look for consistency of power and fuel mixing blend possibilities. In fact the car had a dip in the power after the addition of e85 blend. We believe the blend may help keep the power from dropping due to its cooling characteristic on very hot summer days, but it did not gain as much as we had hope and others have assumed. We are confident we can custom tune the factory ecu with down-pipe close to the 450whp range. Please be patient as we are eager to get the car fully tuned. The car will be at Wannagofast in Hot Springs VA were our shop M2 will be raced in the 1/2 mile rolling event. I know threads like this tends to create a lot of opinion, while we all respect everyone thoughts lets keep it civil.



Here is a where the magic happened and the runs.

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93 Octane Runs

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93 + E85 Blend

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93 vs Blend on the same graph

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      04-24-2016, 08:59 PM   #2
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Great results, 380whp on 93 is better than I was expecting. Very nice what flash tunes do.
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      04-24-2016, 09:53 PM   #3
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Apparently, some people don't believe the results!
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      04-24-2016, 10:39 PM   #4
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Quote:
Originally Posted by zenmaster View Post
Apparently, some people don't believe the results!
Who has tuned a factory ecu M2 stateside for them to believe. Our car bone stock with less than 20 miles read 337 whp, Burger ran the car at 330whp, AA ran it at 331 whp, AMS dyno done by iND ran it 336 sae.

The result are what they are when people are blindsided by piggy back that's all they have to compare.
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      04-24-2016, 10:47 PM   #5
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Originally Posted by paradoxical3 View Post
Great results, 380whp on 93 is better than I was expecting. Very nice what flash tunes do.
I can't tell if you are trolling or not given your other post.
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      04-25-2016, 08:34 AM   #6
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Awesome work guys!
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      04-25-2016, 08:37 AM   #7
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Quote:
Originally Posted by TTFS View Post
Who has tuned a factory ecu M2 stateside for them to believe. Our car bone stock with less than 20 miles read 337 whp, Burger ran the car at 330whp, AA ran it at 331 whp, AMS dyno done by iND ran it 336 sae.

The result are what they are when people are blindsided by piggy back that's all they have to compare.
If it proves accurate, that's great news.

Out of curiosity, have you flashed tuned a 235? And what were the results?

Obviously, a flash tune has many potential advantages, but generally speaking, they're not 20-30 whp advantages...or at least not that we've seen on this platform before.
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      04-25-2016, 09:00 AM   #8
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      04-25-2016, 09:24 AM   #9
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Quote:
Originally Posted by CaryTheLabelGuy View Post
Your an F80 guy. Do you recall why TTFS's M3/M4 dyno threads got deleted?
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      04-25-2016, 10:18 AM   #10
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Quote:
Originally Posted by PrematureApex View Post
Your an F82 guy. Do you recall why TTFS's M3/M4 dyno threads got deleted?
Fixed it for you.

No but seriously, I have no clue. Maybe they weren't official vendors at the time? That happens a lot.
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      04-25-2016, 10:36 AM   #11
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Quote:
Originally Posted by CaryTheLabelGuy View Post
Fixed it for you.

No but seriously, I have no clue. Maybe they weren't official vendors at the time? That happens a lot.
This is my guess.
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      04-25-2016, 11:28 AM   #12
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TTFS--

This looks more promising than I thought it would given early returns. But what is the significance for those of us in non-93 states? Some of us live in Washington, for example, which is a 92 state....
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      04-25-2016, 11:34 AM   #13
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Quote:
Originally Posted by David@ActiveAutowerke View Post
Awesome work guys!
Thanks David, I see the Active Team is right up there too

Quote:
Originally Posted by PrematureApex View Post
If it proves accurate, that's great news.

Out of curiosity, have you flashed tuned a 235? And what were the results?

Obviously, a flash tune has many potential advantages, but generally speaking, they're not 20-30 whp advantages...or at least not that we've seen on this platform before.
Quote:
Originally Posted by CaryTheLabelGuy View Post
Fixed it for you.

No but seriously, I have no clue. Maybe they weren't official vendors at the time? That happens a lot.
We were m3post vendors initially and then f10post vendors and the sponsorship laps by 3 days on the most recent so we took care of it.
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      04-25-2016, 12:30 PM   #14
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Great work TTFS

A few questions just to make sure, these runs were with your DP + Stage1 tune only or just the Stage1 increase to 17psi boost ? Your type of Dyno "Dynocom" reads like or higher than a Dynojet ? Do you think the E85 Blend required a bit more to fully adapt and maybe show a bit more gain ?
I saw Terry dyno'ed 394whp/456wtq with E30 blend on a piggyback with 17 psi if I'm not mistaken.
Since I know you guys are currently testing/working still, have you tried to Dyno on 18-20 psi as well to see what number yields before DP or after DP ? Just for curiousness and seeing how the curve looks on the dyno ?

In terms of ECU Flash, what parameters are being edited at the moment? Is it similar than like the N55 you have seen ? etc
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      04-25-2016, 12:40 PM   #15
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Quote:
Originally Posted by ROBNYC View Post
Great work TTFS

A few questions just to make sure, these runs were with your DP + Stage1 tune only or just the Stage1 increase to 17psi boost ? Your type of Dyno "Dynocom" reads like or higher than a Dynojet ? Do you think the E85 Blend required a bit more to fully adapt and maybe show a bit more gain ?
I saw Terry dyno'ed 394whp/456wtq with E30 blend on a piggyback with 17 psi if I'm not mistaken.
Since I know you guys are currently testing/working still, have you tried to Dyno on 18-20 psi as well to see what number yields before DP or after DP ? Just for curiousness and seeing how the curve looks on the dyno ?

In terms of ECU Flash, what parameters are being edited at the moment? Is it similar than like the N55 you have seen ? etc
For what it's worth their stock M2 results are within 5-7 horsepower to the others. I saw it mentioned in another thread that this dyno was calibrated to be close to a Dynojet?
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      04-25-2016, 03:14 PM   #16
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Can the top speed limiter be raised or removed with the flash?
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      04-25-2016, 04:16 PM   #17
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Great numbers but as I know nothing of fuel types, only that in my country they use 95 or 98, would it make less power?
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      04-25-2016, 08:15 PM   #18
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Quote:
Originally Posted by ROBNYC View Post
Great work TTFS

A few questions just to make sure, these runs were with your DP + Stage1 tune only or just the Stage1 increase to 17psi boost ? Your type of Dyno "Dynocom" reads like or higher than a Dynojet ? Do you think the E85 Blend required a bit more to fully adapt and maybe show a bit more gain ?
I saw Terry dyno'ed 394whp/456wtq with E30 blend on a piggyback with 17 psi if I'm not mistaken.
Since I know you guys are currently testing/working still, have you tried to Dyno on 18-20 psi as well to see what number yields before DP or after DP ? Just for curiousness and seeing how the curve looks on the dyno ?

In terms of ECU Flash, what parameters are being edited at the moment? Is it similar than like the N55 you have seen ? etc
Thank you for the kind words. All runs above had downpipe and were on 17 psi. Our dyno is set to read close to dynojet give or take a few horsepower. Example AMS dyno Jet read 337whp SAE. We hope to have 20psi after we get back from our event this saturday. I am sure he is testing as well, but 456wtq is most likely more than 17 psi but the ecu is pulling timing so it is not reflecting the whp as it should, anyhow time will tell. Let us know when you find out.

Frank does all our tuning so we would have to comment on the parameters feel free to email him. info@tuningtech

Quote:
Originally Posted by PrematureApex View Post
Link doesn't seem to work.

What did the 335 put down on your flash tune?
I am sorry M3F is down all together the link is good once they come back up. It was 274whp stock and about 340 whp ? I don't remember. we will find out when the link comes up.

Quote:
Originally Posted by David1 View Post
Can the top speed limiter be raised or removed with the flash?
Yes.

Quote:
Originally Posted by SliChillax View Post
Great numbers but as I know nothing of fuel types, only that in my country they use 95 or 98, would it make less power?
98 Ron is 93 Octane
95 Ron is 91 Octane
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      04-26-2016, 12:12 AM   #19
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TTFS is more than legit guys. Go over to M3F and see everything they have done for that community.

As a long time E46 M3 owner, I always planned to go FI eventually and use TTFS, but the F87 called my name.

Can't wait to see what you guys do with Pure Stage 2 etc etc.
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      04-26-2016, 02:36 PM   #20
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Personally, I think the engine was the least attractive part of the new M2 (same engine as m235i). Would definitely be a killer with a bigger turbo and more cooling though
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      04-26-2016, 02:46 PM   #21
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Quote:
Originally Posted by TTFS View Post



98 Ron is 93 Octane
95 Ron is 91 Octane
In UK (and perhaps the rest of EU) bmw quoted crank power/torque outputs of 370 and 343/369 are based on 98RON.

Anything above about 325whp on 93 USA/98 EU fuel means the cars hitting quoted figures.

I'd be sceptical about dyno claims achieving the same whp on 91US/95 EU fuel as it implies there's no DME corrections for lower grade fuel - I estimate higher fuel grade to be circa 15-20 bhp at the crank.

BP
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      04-26-2016, 02:56 PM   #22
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