[Jims M3]

Originally Posted by WeekendWarriorz

My theory: FEMTO either has inside ties to BMW or Bosch where the company themselves gave/showed him how to crack the software and I’m sure they receive a small penny from his services.

OR my other guess which is more likely: FEMTO probably knows/knew someone at BMW/Bosch who sold him some of the coding needed to unlock the ecus.

For all we know he could be a Bosch employee who does this as a side hustle or a close friend of one.

Tuned plenty of cars in the past on BMW Bosch ecu’s and other platforms and the idea that one person in the world magically has the tables/discovered it on their own is a slim chance close to 0. They would likely license it out by now and sit back/collect a paycheck if they did without inside help.

I agree with this, remember on the old E36 platform,nobody could tune that car with a custom tune beside Nick G and he worked with Jim Conforti and got access to the DME. I heard they were insiders with access to the system.

[Jims M3]

Originally Posted by JoshuaevansF87

I’m not concerned about Emissions lol my question is are catless downpipes necessary? I don’t see how they wouldn’t be, correct me if I’m wrong but wouldn’t the stock cat blow Due to all the power gains and heat?

You're better off removing the secondary catalyst in the system the gains with removing the primaries just isn't that great. I am going to go with this system after I get my car. I have the Dinan heat exchanger in my F80 and was really impressed with how well it worked.

[G80_GuyGuy]

Upgrading from the controller to the Stage 1 tune in a couple of weeks at Carbahn. Will update after. Going to try this one first possibly do the upgrade to stage 2 end of year.

[Hit_Apex]

Originally Posted by Jims M3

You're better off removing the secondary catalyst in the system the gains with removing the primaries just isn't that great. I am going to go with this system after I get my car. I have the Dinan heat exchanger in my F80 and was really impressed with how well it worked.

I'll bite, so what are the gains in removing just the secondaries?

[GP_with_the_M3]

Factory clutch with the stage 2 is going to be a problem soon than later

[m4ml]

Originally Posted by GP_with_the_M3

Factory clutch with the stage 2 is going to be a problem soon than later

The Stage 2 is not offered for manuals.

[M4Lou]

Originally Posted by hova00

Carbahn just dropped their Stage 2 Ecu tune with ecu unlock. The amazing thing is you can retain your factory warranty and it's dealer installed

Check out the link for more info on WHP numbers price etc:

https://youtu.be/EjMlns1M0WE

https://carbahn.com/product/cbs58-06...d-xdrive-2021/

Video - his stock flywheel numbers seem high to me.

OP - really nice you letting us follow this process along!

[GP_with_the_M3]

Originally Posted by m4ml

The Stage 2 is not offered for manuals.

A few people have confirmed from talking to Carbahn tech’s directly, that the manual crowd is getting a stage 2. It might make 25-35 less HP, but it’s coming.

[Johndaks]

Originally Posted by G80_GuyGuy

Upgrading from the controller to the Stage 1 tune in a couple of weeks at Carbahn. Will update after. Going to try this one first possibly do the upgrade to stage 2 end of year.

How was the carbahn controller? Did you really feel the difference?

[G80_GuyGuy]

Originally Posted by Johndaks

How was the carbahn controller? Did you really feel the difference?

Car definitely feels like it pulls harder than it did when it was stock. It's a noticeable difference. Haven't ran any draggy times to confirm but my butt dyno can feel it. I've had it for so long now I couldn't even imagine driving this car stock again. Actually changed my mind and I will be getting the Stage 2 installed!

[Draper]

I finally got a response from my dealer today. It sounds like they have only done stage 1 stuff with heat exchangers so far, as he had no idea the ECU has to go to FEMTO.

I pointed him at the Carbahn page with the info, so now just waiting for them to get back to me.

[Johndaks]

Originally Posted by G80_GuyGuy

Car definitely feels like it pulls harder than it did when it was stock. It's a noticeable difference. Haven't ran any draggy times to confirm but my butt dyno can feel it. I've had it for so long now I couldn't even imagine driving this car stock again. Actually changed my mind and I will be getting the Stage 2 installed!

Stage 2 awesome!!! Let us know how it goes!!

[m4ml]

I worked with the local Carbahn installer today to determine the costs for the Stage 2 Software upgrade from the Stage 1 Controller.

NOTE!!!! That if you are upgrading from the Stage 1 Controller to the Stage 2 Software the cost is $250 for the upgrade from the Controller to the Software PLUS $500 for the upgrade from Stage 1 to Stage 2!!!

Like I told my installer $500 isn't going to make the difference in my choice to upgrade, but it would have been nice if that was more explicit on the Carbahn page.

[G80_GuyGuy]

Originally Posted by m4ml

I worked with the local Carbahn installer today to determine the costs for the Stage 2 Software upgrade from the Stage 1 Controller.

NOTE!!!! That if you are upgrading from the Stage 1 Controller to the Stage 2 Software the cost is $250 for the upgrade from the Controller to the Software PLUS $500 for the upgrade from Stage 1 to Stage 2!!!

Like I told my installer $500 isn't going to make the difference in my choice to upgrade, but it would have been nice if that was more explicit on the Carbahn page.

What is the Software plus? On the Carbahn website I only see stage 1 software, stage 2 software, and their stage 1 power package.

[Ervin87]

Originally Posted by G80_GuyGuy

Upgrading from the controller to the Stage 1 tune in a couple of weeks at Carbahn. Will update after. Going to try this one first possibly do the upgrade to stage 2 end of year.

Do you plan on doing a before/after dyno?

[G80_GuyGuy]

Originally Posted by Ervin87

Do you plan on doing a before/after dyno?

I wanted to do a dyno with the power controller but hard to find places in the Bay Area ca. I found one place near me that has a dyno but when I showed them my car they had no idea what a dyno mode was and made me nervous so I didn’t end up doing it. Maybe they will dyno it at carbahn? Idk… Also to give everyone a heads up the power exchanger isn’t cheap to get installed either! Kinda caught me off guard but oh well do it right the first time I always heard.

[M4Lou]

Originally Posted by G80_GuyGuy

I wanted to do a dyno with the power controller but hard to find places in the Bay Area ca. I found one place near me that has a dyno but when I showed them my car they had no idea what a dyno mode was and made me nervous so I didn’t end up doing it. Maybe they will dyno it at carbahn? Idk… Also to give everyone a heads up the power exchanger isn’t cheap to get installed either! Kinda caught me off guard but oh well do it right the first time I always heard.

Heck 0-60's times (several) before and after would be huge. Getting tired of watching these youtube video's w/ two guys sitting in the front seat screaming at each other how much "faster" it feels. ..lol.

[G80_GuyGuy]

Originally Posted by M4Lou

Heck 0-60's times (several) before and after would be huge. Getting tired of watching these youtube video's w/ two guys sitting in the front seat screaming at each other how much "faster" it feels. ..lol.

Hahaha! I know what you mean! My 0-60 will still be trash for me since I own the RWD model. I’ll get some 60-130 times after the install when I get my draggy.

[Hit_Apex]

Originally Posted by G80_GuyGuy

I wanted to do a dyno with the power controller but hard to find places in the Bay Area ca. I found one place near me that has a dyno but when I showed them my car they had no idea what a dyno mode was and made me nervous so I didn’t end up doing it. Maybe they will dyno it at carbahn? Idk… Also to give everyone a heads up the power exchanger isn’t cheap to get installed either! Kinda caught me off guard but oh well do it right the first time I always heard.

Would love to see a pic of the installed heat exchanger. I'm considering it to keep cool on track but not clear how it mounts since it doesn't replace anything.

[M4Lou]

Originally Posted by G80_GuyGuy

Hahaha! I know what you mean! My 0-60 will still be trash for me since I own the RWD model. I’ll get some 60-130 times after the install when I get my draggy.

Solid plan.....

[G80_GuyGuy]

Originally Posted by Hit_Apex

Would love to see a pic of the installed heat exchanger. I'm considering it to keep cool on track but not clear how it mounts since it doesn't replace anything.

I’ll post it. Probably about 3 weeks from now since about 10 days for FEMTO.

[hova00]

I just dynoed my car before dropping it off at the dealer for Carbahn’s Stage 2 and will dyno it again as soon as I get it back.

Check out the video for details

https://youtu.be/nC7wUomz0vA