[Thewolfbmw]

Originally Posted by Hoonigan

No issue, but your first time it'll probably take an hour. There was one connection is misleading based on the pictures in the provided instructions...it requires you to remove the front driver side wheel to access the connection.

I bet i could do it in 30 min now, now that I know where all the connections are.

I really appreciate the reply and information! I will keep an eye out for your times on the leader board. I was happy to see another x3m on the list.

[PURE340i]

Originally Posted by MRichmond

Fairly worthless without dyno graphs comparing before and after.

658whp ethanol blended
https://www.burgertuning.com/product...-x3mc-x4m-x4mc

[strohw]

The numbers they're posting don't make sense unless I'm missing something. They're claiming The X3M has 505awhp on their dyno graph stock. That would mean a stock X3M produces over 600bhp easy according to them. Every other dyno I've seen is showing bhp is more like 520-540 and awhp would be around 430-450. Why are they 50-70hp higher? I don't believe this motor produces 600bhp+ stock.

Then the advertising says up to +100hp on e85 yet their dyno graph is saying a mixture close to e50 is giving +153hp. So taking their 658awhp claim, that would mean this motor is making almost 800bhp after their tune.

Finally, the Dragy times on the stock vehicle are obviously without LC coming in at over 4 seconds 0-60. So does that mean they aren't using LC for their after tune shots or are they?

[AlexFL]

Originally Posted by strohw

The numbers they're posting don't make sense unless I'm missing something. They're claiming The X3M has 505awhp on their dyno graph stock. That would mean a stock X3M produces over 600bhp easy according to them. Every other dyno I've seen is showing bhp is more like 520-540 and awhp would be around 430-450. Why are they 50-70hp higher? I don't believe this motor produces 600bhp+ stock.

Then the advertising says up to +100hp on e85 yet their dyno graph is saying a mixture close to e50 is giving +153hp. So taking their 658awhp claim, that would mean this motor is making almost 800bhp after their tune.

Finally, the Dragy times on the stock vehicle are obviously without LC coming in at over 4 seconds 0-60. So does that mean they aren't using LC for their after tune shots or are they?

Whenever you see the g curve jumping up to 1, it means they used the launch control. They had a very bad DA in both their runs, hence the “slow” times.

[RoyB]

I hope to get my non Comp to a dyno soon. Also looking forward to this tune and a dyno after. If it only takes an hour to pull off and on that will make going to the dealer less of a headache.

[Hoonigan]

Originally Posted by RoyB

I hope to get my non Comp to a dyno soon. Also looking forward to this tune and a dyno after. If it only takes an hour to pull off and on that will make going to the dealer less of a headache.

I'd say it's only an hour the first time you do it, probably 30 minutes after. You will need to be able to jack up the car and remove the driver front wheel.

[Max Well]

Would also be helpful to see formal runs with time slips if possible. Las Vegas Motor Speedway is having an Open Test-N-Tune this Saturday from 9AM-5PM ( https://www.lvms.com/documents/sched...ch-14-2020.pdf ). And if all slips could be shared I can compare interval times with my Stock X3MC's runs on Shell 93 Octane (it seems they only used 91 Octane in their stock comparison).

The interval times of their one JB4 Dragy example (not adjusted for DA) c/w my X3MC runs show the gains are highest early on with the time differences narrowing to the finish line.

60'-330': -0.233s
330'-660': -0.173s
660'-1000': -0.133s
1000'-1320': -0.113s

The weather forecast for LV this Saturday is low 54 and high 70 deg, and mostly sunny with rain exiting the region, so would seem a perfect day to run if their schedule allows?

[PURE340i]

Originally Posted by RoyB

I hope to get my non Comp to a dyno soon. Also looking forward to this tune and a dyno after. If it only takes an hour to pull off and on that will make going to the dealer less of a headache.

This would be nice. I want to see the non competition dyno. Everything seems to revolve around the competition.

[PURE340i]

MHD just posted up on Instagram stage 2+ 102 pump with 2L methanol did 776PS/982Nm (765HP/724ft/lb) if I did the calculations correctly.

[AlexFL]

Originally Posted by PURE340i

MHD just posted up on Instagram stage 2+ 102 pump with 2L methanol did 776PS/982Nm (765HP/724ft/lb) if I did the calculations correctly.

Very interesting. Just shows the whole potential of S58. BMW should get rid of V8 and put tuned S58 in all high end models.

[Hoonigan]

Originally Posted by AlexFL

Very interesting. Just shows the whole potential of S58. BMW should get rid of V8 and put tuned S58 in all high end models.

The V8 is amazing...I rented an F90 M5 from Turo over the holidays and the way that thing sounds and pulls from any speed is just amazing

[RoyB]

Originally Posted by AlexFL

Very interesting. Just shows the whole potential of S58. BMW should get rid of V8 and put tuned S58 in all high end models.

Think back to the Supra days. Big turbo, big lag, no torque under 3K and huge HP numbers. Great for the track and dyno, not so much for daily driving. I'd take a smaller Turbo/SC V8 any day of the week over a 6 or 4 banger.

Regardless, those numbers are pretty sick. Off the cuff I would think that should be a low 10 or high 9 second car if it can get traction.

[AlexFL]

Originally Posted by RoyB

Think back to the Supra days. Big turbo, big lag, no torque under 3K and huge HP numbers. Great for the track and dyno, not so much for daily driving. I'd take a smaller Turbo/SC V8 any day of the week over a 6 or 4 banger.

Regardless, those numbers are pretty sick. Off the cuff I would think that should be a low 10 or high 9 second car if it can get traction.

Me too, yes. V12 twin turbo even better and smoother. But they are about to to introduce even stricter emission standards in Europe and BMW needs to adjust. I fear V8 will be dying species in 10 years.

[Hoonigan]

I started to play around with higher octane this weekend. This is on a full tank, 50/50 93 and 100 oct (probably nets to about 96-97).

I'm going to try some adjustments later in the week to see what we can improve

[RoyB]

pulled the trigger on the JB4 over the weekend. Hopefully a good solution for those of us that don't want a full on tune for a leased car.

[mike@x-ph.com]

Originally Posted by RoyB

pulled the trigger on the JB4 over the weekend. Hopefully a good solution for those of us that don't want a full on tune for a leased car.

Congrats

[skioutwest]

Originally Posted by RoyB

pulled the trigger on the JB4 over the weekend. Hopefully a good solution for those of us that don't want a full on tune for a leased car.

You will be very happy with it. I had a JB4 on my last M3 and M5 leases and was thrilled.

That said, I thought I would try the BM3 this time....just waiting for break in to finish.

-Mark

[FSociety]

Originally Posted by skioutwest

You will be very happy with it. I had a JB4 on my last M3 and M5 leases and was thrilled.

That said, I thought I would try the BM3 this time....just waiting for break in to finish.

-Mark

Wherever BM3 is available, that is the best move

Less Boost, Less Heat and more consistent pull after pull I am no where the boost level or high ethanol blend they tried with Jb4 but the lack of data going forward has put people in doubt so majority have been going with BM3.

Currently as per Dragy Leaderboards, BM3 OTS both STG1 93 and E30 STG1 makes more power and faster dragy times across a few cars not just one (tester as they used).

[RoyB]

Originally Posted by FSociety

Wherever BM3 is available, that is the best move

Less Boost, Less Heat and more consistent pull after pull I am no where the boost level or high ethanol blend they tried with Jb4 but the lack of data going forward has put people in doubt so majority have been going with BM3.

Currently as per Dragy Leaderboards, BM3 OTS both STG1 93 and E30 STG1 makes more power and faster dragy times across a few cars not just one (tester as they used).

My buddy had a JB4 on his Golf R vs my Full on programmed tuned Golf R. His car ran nearly identical to mine.

I have a full programmed tune on my Ram (self tuner). I own both cars outright so I felt better about tuning the computer.

With the lease and the BMW I thought I would give the JB4 a shot. It's due in tomorrow. I am not going to lose sleep over a few hp less.

[Thescout13]

Originally Posted by RoyB

My buddy had a JB4 on his Golf R vs my Full on programmed tuned Golf R. His car ran nearly identical to mine.

I have a full programmed tune on my Ram (self tuner). I own both cars outright so I felt better about tuning the computer.

With the lease and the BMW I thought I would give the JB4 a shot. It's due in tomorrow. I am not going to lose sleep over a few hp less.

I think the big debate between a flash vs JB4 is the power but how it is delivered. One manipulates signals to increase boost (JB4), the other modifies everything from the boost to trim to timing, etc. (flash) which makes for a much smoother power delivery (less surgy than a piggyback) and the car will feel like it came like that from factory.

Both are detectable by a dealer, but the piggyback is easier to remove than a flash when taking in for service or at lease end.

[MrItaly]

Originally Posted by Thescout13

I think the big debate between a flags vs JB4 is the power but how it is delivered. One manipulates signals to increase boost (JB4), the other modifies everything from the boost to trim to timing, etc. (flash) which makes for a much smoother power delivery (less surgy than a piggyback) and the car will feel like it came like that from factory.

Both are detectable by a dealer, but the piggyback is easier to remove than a flash when taking in for service or at lease end.

Nice summarization and contrast between the two

[forza1976]

Originally Posted by Thescout13

I think the big debate between a flags vs JB4 is the power but how it is delivered. One manipulates signals to increase boost (JB4), the other modifies everything from the boost to trim to timing, etc. (flash) which makes for a much smoother power delivery (less surgy than a piggyback) and the car will feel like it came like that from factory.

Both are detectable by a dealer, but the piggyback is easier to remove than a flash when taking in for service or at lease end.

Is a piggyback really "easier" to remove than a flash? As I understand it, BM3 can be reflashed to stock in minutes versus quite a bit longer to unplug a bunch of stuff.