CarAbuser's N54 Tuning Services - Performance tunes and readiness forcing.

carabuser

Lieutenant
Vendor
Oct 2, 2019
999
1
1,076
0
UK
Ride
Z4 35i & 335i
Putting a formal thread up on here as a lot of people seem to ask about passing inspection. @doublespaces gave me permission, so for any admins I apoligise if this is in the wrong section, feel free to move it as we didn't discuss the post location.

My tunes are different to other offerings out there since I have full access to all the tables. Things like torque ramp rates are adjusted to make the car feel more or less responsive depending on customer requirement (Over and above what the "1M" throttle changes achieve), the full exhaust model is corrected for catless cars so that the exhaust pressure correction and catalyst diagnostic routines continue to function correctly. I also bring over updates from newer ROMs into the older vehicles like injection window timing and boost control changes. The focus is on driveability for my tunes, so no boost surge or unpredictable partial pedal response like other tuners.

MHD Custom Tunes:
Stock turbo: $400
Hybrid turbo: $450
Single Turbo: $550

CAFlash Custom Tunes (no MHD+ functionality):
Tunes are flashed with the CAFlash Android App, no license required so if you don't already have MHD this will save you money. This application uses a custom logic section and will not feature any MHD+ functionality.
Stock turbo: $400
Hybrid turbo: $450
Emissions tune: (Any turbo, stock, hybrid or single): $200
This is a stock power map that will ensure all required readiness monitors pass along with the CVN numbers matching the stock file. This will even allow single turbo users with the single bank modification to pass. No mechanical changes are needed to the car, so it saves you the hassle of a DPFix or swapping out exhausts.

Customers will get access to my app on the Google Play store for free so there is no additional cost other than the tune itself. I've been using my own app and logic now for a few years as I didn't like how the car drove with MHD so I put the effort into making my own.
This app will allow you to flash DME (Supports MHD WiFi adapter or USB cables), data logging, code reading and clearing and readiness monitor reading (To check all monitors are complete before inspection).
Also allows an optional EWS bypass for people needing a DME swap and don't want the hassle or expense of cloning the DME.

If interested, drop me a PM on these forums.
 

pbondar

Lieutenant
May 30, 2020
542
302
0
A big vote for carabuser and his services….he patiently tuned my E89 35is…well pleased with his results…safe, steady, competent..with smooth plentiful power and drivability….🧐👍🏎🫡
 

whyzee125

Private
May 3, 2023
34
9
0
This is super cool. Thank you for providing these. I may be reaching out to try one of your tunes in the near future! I've heard nothing but great things on this board about your tunes.
 

Badakvt

New Member
Oct 27, 2019
1
2
0
Ride
BMW 1M
I can also vouch for carabuser and his tuning service. Tuned my 1M w/TTE500. Probably the nicest tuner I've dealt with. Super quick turn around and great results. Cheers from Indonesia!

Mike
 

carabuser

Lieutenant
Vendor
Oct 2, 2019
999
1
1,076
0
UK
Ride
Z4 35i & 335i
Just a short demo of the application showing the emissions tune:

It's no replacement for MHD, but I'll keep adding features in over time like adaptation resets and improved logging to further support customers that want custom logic or don't own MHD.
At the moment the logging only shows a few live parameters on the logging screen, but the app logs 41 parameters in the csv. I might add some gauges for things like boost and AFR.
 

Asbjorn

Lieutenant
Mar 10, 2018
856
605
0
European, based in China
Ride
Z4 N54 DCT
My tune from Carabuser is probably two years old now, but there's no doubt in my mind that these new products are worth every penny. An absolute gift to the community.

Btw did anyone ever figure out how to put different electronic steering maps on the E89? Mine has never felt the same after I installed a newer rack with newer software. Still miss the less assisted feel of the original rack.
 

carabuser

Lieutenant
Vendor
Oct 2, 2019
999
1
1,076
0
UK
Ride
Z4 35i & 335i
My tune from Carabuser is probably two years old now, but there's no doubt in my mind that these new products are worth every penny. An absolute gift to the community.

Btw did anyone ever figure out how to put different electronic steering maps on the E89? Mine has never felt the same after I installed a newer rack with newer software. Still miss the less assisted feel of the original rack.

I stopped looking into that a while ago. I wanted to try the 35is software on my 35i, but after reading it was over assisted, I stopped playing with it.

I think the new racks are all the 35is part with different software so WinKFP won't let you flash it with the 35i software.
 

carabuser

Lieutenant
Vendor
Oct 2, 2019
999
1
1,076
0
UK
Ride
Z4 35i & 335i
Are you able to offer M3 GTS gearbox software for the N54 DCT?
Yes, that will be a topic for another thread in the DCT section. Probably in a couple of weeks.

The app for flashing the DCT can handle both the normal software like xHP does and the GTS software. It can also read out information about the transmission like mileage, historic oil temperatures, number of launch control uses and overheat events. It can also display and log the current clutch statuses, pressures, temperatures, selected gears and the active shiftmaps.

It'll just be the same kind of offering like the engine tune, no charge for the app.
 

billyDFW

New Member
Jan 27, 2025
4
19
0
Excited to hear more, left a message on your profile. The new to me 135i will probably be delivered in a week or two.
 
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Dumaurier7

Lieutenant
May 19, 2020
669
294
0
This is great! The guy who tuned my N55 seems too busy (or my money isn’t good with him anymore!), the one who did my E89/N54 left too much on the table and the new project will require expert tuning and coding! Can’t wait to get started!
 
Last edited:

pe7er85

New Member
Jul 3, 2022
1
0
0
is the N54 able to do ignition cut for having nice upshift sounds?
xHP is promoting custom ignition cut for b58.
what about overrun brap ?
 

Darkrom

Lurker
Oct 17, 2021
10
5
0
I can vouch for this. I used the old method I would like to get the google app as well, the laptop method works great and hes honest and responsive.
 
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Reactions: carabuser

TOR COILS

Private
Jul 3, 2019
35
6
0
Ride
n55
是的,这将是 DCT 部分中另一个主题。可能在几周后。

用于刷新 DCT 的应用程序既可以处理 xHP 等常规软件,也可以处理 GTS 软件。它还可以读取有关变速器的信息,如里程数、历史油温、启动控制使用次数和过热事件。它还可以

Hi, can dct app read files? Is the IOS version out yet?Hi, can dct app read files? Is the IOS version out yet?
 

supra2jzn54

New Member
Mar 16, 2025
2
1
0
Putting a formal thread up on here as a lot of people seem to ask about passing inspection. @doublespaces gave me permission, so for any admins I apoligise if this is in the wrong section, feel free to move it as we didn't discuss the post location.

My tunes are different to other offerings out there since I have full access to all the tables. Things like torque ramp rates are adjusted to make the car feel more or less responsive depending on customer requirement (Over and above what the "1M" throttle changes achieve), the full exhaust model is corrected for catless cars so that the exhaust pressure correction and catalyst diagnostic routines continue to function correctly. I also bring over updates from newer ROMs into the older vehicles like injection window timing and boost control changes. The focus is on driveability for my tunes, so no boost surge or unpredictable partial pedal response like other tuners.

MHD Custom Tunes:
Stock turbo: $400
Hybrid turbo: $450
Single Turbo: $550

CAFlash Custom Tunes (no MHD+ functionality):
Tunes are flashed with the CAFlash Android App, no license required so if you don't already have MHD this will save you money. This application uses a custom logic section and will not feature any MHD+ functionality.
Stock turbo: $400
Hybrid turbo: $450
Emissions tune: (Any turbo, stock, hybrid or single): $200
This is a stock power map that will ensure all required readiness monitors pass along with the CVN numbers matching the stock file. This will even allow single turbo users with the single bank modification to pass. No mechanical changes are needed to the car, so it saves you the hassle of a DPFix or swapping out exhausts.

Customers will get access to my app on the Google Play store for free so there is no additional cost other than the tune itself. I've been using my own app and logic now for a few years as I didn't like how the car drove with MHD so I put the effort into making my own.
This app will allow you to flash DME (Supports MHD WiFi adapter or USB cables), data logging, code reading and clearing and readiness monitor reading (To check all monitors are complete before inspection).
Also allows an optional EWS bypass for people needing a DME swap and don't want the hassle or expense of cloning the DME.

If interested, drop me a PM on these forums.
@carabuser if you can shoot me a PM, and ready to purchase a tune from you. Can't seem to send you PM yet.