[drwankel]

Was wondering if anybody here is running the Carbahn tune on a 21+ car, and what you think about it.

Dinan tunes in the past are a good balance of gains and smoothness without having to make compromises, and have good margins for safety.

I see lots of people running Bm3 or MHD+, but nobody seems to talk about the Carbahn tune.

Currently considering my tuning options for when my warranty is up next year.

[aviciiavbdeadpunk]

just get the mhd+ base map and call it a day

[drwankel]

Originally Posted by aviciiavbdeadpunk

just get the mhd+ base map and call it a day

Not helpful.

[SpiveyCJ]

Might be slightly helpful but I've been running carbahn on 2020 M340 since Aug 2020, no issues absolutely love it

[prostcfc]

Originally Posted by drwankel

Not helpful.

Well, you still have to send your DME to Femto to unlock for 21+, whereas Dinan is a piggyback for 21+. So if you need to go through the Femto process, most take the proven path that gives more options for less money. Would be interested to hear if others have gone Carbahn though.

[drwankel]

Originally Posted by SpiveyCJ

Might be slightly helpful but I've been running carbahn on 2020 M340 since Aug 2020, no issues absolutely love it

How much impact did you see to fuel economy? Normally wouldn't care, but this car is my daily and the insane fuel economy of the b58 is something I love about this engine.

Already have a supercharged e92 m3 for my weekend car that gets spectacularly bad fuel economy. (~11MPG). Obviously don't care for the weekend car, but it is more of a concern for the M340 which is my daily.

Would be nice to know much I am trading for the extra power.

[SpiveyCJ]

Originally Posted by drwankel

How much impact did you see to fuel economy? Normally wouldn't care, but this car is my daily and the insane fuel economy of the b58 is something I love about this engine.

Already have a supercharged e92 m3 for my weekend car that gets spectacularly bad fuel economy. (~11MPG). Obviously don't care for the weekend car, but it is more of a concern for the M340 which is my daily.

Would be nice to know much I am trading for the extra power.

Didn't notice any substantial decrease in fuel economy although I only had the car stock for 2-3 months. I've gotten 34-35 mpg on long highway trips, usually in the 25 mpg range for my normal city/highway mix of driving. Maybe Carbahn would have an idea ?

[drwankel]

Originally Posted by SpiveyCJ

Didn't notice any substantial decrease in fuel economy although I only had the car stock for 2-3 months. I've gotten 34-35 mpg on long highway trips, usually in the 25 mpg range for my normal city/highway mix of driving. Maybe Carbahn would have an idea ?

That sounds pretty close to stock. Thanks for the info!

[PrezRoosevelt]

IIRC, I don't think you can even get a carbahn tune through femto, which is the only way to get our 21+ cars unlocked. Only other tune needs be done with the car physically in Germany (forgot name of the shop) and they want their specific tune installed. You have either BM3 or MHD. Unless you are talking about piggybacks in which case, no idea.

[Matic94]

Originally Posted by PrezRoosevelt

IIRC, I don't think you can even get a carbahn tune through femto, which is the only way to get our 21+ cars unlocked. Only other tune needs be done with the car physically in Germany (forgot name of the shop) and they want their specific tune installed. You have either BM3 or MHD. Unless you are talking about piggybacks in which case, no idea.

So it has to go to Femto to get unlocked, and then you apply the tune at an authorized dealer. Thing is, I see zero point in going Carbahn over BM3 and MHD when you are out of warranty, as that is the only reason to use Carbahn. Not only are the increases in HP gains minimal at best, but it’s also more expensive with barebones customization; you even have to pay 100 bucks to add burbles.

https://carbahn.com/product/cbb58-04...m440i-z4-m40i/

[drwankel]

Originally Posted by Matic94

So it has to go to Femto to get unlocked, and then you apply the tune at an authorized dealer. Thing is, I see zero point in going Carbahn over BM3 and MHD when you are out of warranty, as that is the only reason to use Carbahn. Not only are the increases in HP gains minimal at best, but it’s also more expensive with barebones customization; you even have to pay 100 bucks to add burbles.

https://carbahn.com/product/cbb58-04...m440i-z4-m40i/

Carbahn (and formerly Dinan) make an effort to retain safety parameters without just going for absolute max power. There are tuners that make serious safety compromises to make the numbers they make.

In addition, just the raw top numbers aren't necessarily the most important thing- its the power curve and how you get there.

I'm also glad that carbahn charges for burbles because they are effing stupid. Hell, I'd pay money to have any sort of burble or pop deleted from the car entirely.

I already have a high HP car for my weekend car. I'm not chasing peak numbers with the m340 as it is my daily, just trying to reclaim power left on the table from BMW.


This video has Steve Dinan explaining the tuning safety issue well:

[totalone]

Originally Posted by drwankel

Carbahn (and formerly Dinan) make an effort to retain safety parameters without just going for absolute max power. There are tuners that make serious safety compromises to make the numbers they make.

In addition, just the raw top numbers aren't necessarily the most important thing- its the power curve and how you get there.

I'm also glad that carbahn charges for burbles because they are effing stupid. Hell, I'd pay money to have any sort of burble or pop deleted from the car entirely.

I already have a high HP car for my weekend car. I'm not chasing peak numbers with the m340 as it is my daily, just trying to reclaim power left on the table from BMW.


This video has Steve Dinan explaining the tuning safety issue well:

if you end up getting a tune let us know. Also looking at this option

[drwankel]

Was talking to Carbahn this morning, and was asking how much burbling is in the tune.

They said they can set it up 3 ways.

-Extra burbles
-Same burbles as stock
-No burbles at all

As someone who absolutely despises burbles, removing all burbles from the car is extremely appealing.

[prostcfc]

Originally Posted by drwankel

As someone who absolutely despises burbles, removing all burbles from the car is extremely appealing.

FWIW, that's a toggle on MHD. I'm sure BM3 has the same option.

[PrezRoosevelt]

Originally Posted by drwankel

Carbahn (and formerly Dinan) make an effort to retain safety parameters without just going for absolute max power. There are tuners that make serious safety compromises to make the numbers they make.

In addition, just the raw top numbers aren't necessarily the most important thing- its the power curve and how you get there.

I'm also glad that carbahn charges for burbles because they are effing stupid. Hell, I'd pay money to have any sort of burble or pop deleted from the car entirely.

I already have a high HP car for my weekend car. I'm not chasing peak numbers with the m340 as it is my daily, just trying to reclaim power left on the table from BMW.


This video has Steve Dinan explaining the tuning safety issue well:

Seems somewhat in-line with what MP does with their tunes which makes me more interested when I do femto. Seems odd that they only have a stage 1 tune, would be more interested if they offered stage 2 or a next step option. I think there is a lot left on the table while still keeping stability.

[20M340i]

Originally Posted by SpiveyCJ

Might be slightly helpful but I've been running carbahn on 2020 M340 since Aug 2020, no issues absolutely love it

Any chance you have any 1/4 mile numbers with that tune installed? I wonder how close it is compared to a MHD/BM3 stage 1 tune. I’m probably over thinking it like most but I know Carbahn is a really reliable option. I’m going back and forth between that and MHD/BM3, I just want to make sure the Carbahn is obviously quicker than stock. I can’t find a single performance test with that tune.

[dradernh]

Originally Posted by drwankel

Was wondering if anybody here is running the Carbahn tune on a 21+ car, and what you think about it.

Dinan tunes in the past are a good balance of gains and smoothness without having to make compromises, and have good margins for safety.

That's why I went to Dinan for my B58 performance upgrade. About ~10%+ more power and the option of a factory-matching warranty gave me peace of mind. I didn't really need any more power, but since it was there to be had...

Years ago, I spent 45 minutes with Steve Dinan being educated re: ECU tuning and am familiar with his history building race engines for BMW. He also tuned those engines. If BMW trusted him to do that, I do, too.

I'm aware of a number of the alternatives on the market and know they're quite popular; I just have no experience with them.

Originally Posted by 20M340i

I just want to make sure the Carbahn is obviously quicker than stock.

I'd imagine it's bound to be with an increase of 13.3% RWHP and 11.3% RWTQ:





How much quicker, though, all depends. My speed at the beginning of the braking zone going into China Beach at Mid-Ohio went from 134.4 to 138.8 after I installed the Dinan Elite V2 piggyback on my 2017 B58. That's a major increase in that application. The Elite V2 has a little less power increase than does the tune now being offered by Carbahn for the 2021+ B58.