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      03-19-2020, 07:19 AM   #45
swissarmyknife
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The Kerma tuner arrived on Tue and I sent the stock file and got the tuned file back the same day. Yesterday I went out to do a test run before the tune and another after to have some sort of comparison and I was left with a big grin on my face.

Disclaimer: I used the native app from my OBDLink MX bluetooth adapter to take the two runs. The conditions between the runs were identical, meaning no temp change or other environmental condition that could impact the result, however the road I tested on is not 100% flat but for both runs I used the same stretch of road. The times therefore will not be real representations of a track based run, but offer at least a comparison. Also I did not use any launch control techniques and simply let the brake go and stomped on the accelerator until I reached a point on the road where I had to slow down again.


First run, stock:
Name:  Screenshot_20200318-170903.jpg
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Second run, Kerma tune Stage 1:
Name:  Screenshot_20200318-173657.jpg
Views: 1408
Size:  134.0 KB

Now the next question, can I manage to actually get better gas mileage out of it. I'll have to resist the urges to stomp on it, but we will see.
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Last edited by swissarmyknife; 03-19-2020 at 07:25 AM..
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      03-19-2020, 11:11 AM   #46
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That is awesome, especially for a wagon!
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      03-19-2020, 02:03 PM   #47
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That is awesome, especially for a wagon!
Agreed. I want to get my Kerma tuned 328d dynoed to see what it shows
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      03-19-2020, 02:29 PM   #48
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Quote:
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Agreed. I want to get my Kerma tuned 328d dynoed to see what it shows
Sedan? RWD?

Keep in mind 6th gear is limited down a bit by a hard transmission software limiter in stock transmission flash, so use 5th or 7th gear for actual engine numbers.
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      03-19-2020, 02:31 PM   #49
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I’ve had my Kerma tune for a couple of months now, here’s my quick review. Mine’s a ‘16 so I had to send the ECU in - sent on Monday and had it back Wed afternoon. I really like the tune, swiss’s numbers confirm my butt dyno. The car feels much torquier but what gets me is the smoothness. It’s so much smoother than the factory tune, just torque everywhere. If you’re looking for a “vtec just kicked in yo” feeling this ain’t it, but it will quickly get you into triple digits if you’re not paying attention. If anything mileage is up a few tenths on the dash readout. My wife has an X3d and it feels very laggy and down on power compared to my car. Definitely recommend if you have an N47 car.
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      03-19-2020, 07:05 PM   #50
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Quote:
Originally Posted by Enabled View Post
That is awesome, especially for a wagon!
I was astonished too. I love diesels!!


Quote:
Originally Posted by EricD735i View Post
I’ve had my Kerma tune for a couple of months now, here’s my quick review. Mine’s a ‘16 so I had to send the ECU in - sent on Monday and had it back Wed afternoon. I really like the tune, swiss’s numbers confirm my butt dyno. The car feels much torquier but what gets me is the smoothness. It’s so much smoother than the factory tune, just torque everywhere. If you’re looking for a “vtec just kicked in yo” feeling this ain’t it, but it will quickly get you into triple digits if you’re not paying attention. If anything mileage is up a few tenths on the dash readout. My wife has an X3d and it feels very laggy and down on power compared to my car. Definitely recommend if you have an N47 car.
What mode do you usually run in when you see the slight MPG increase. Just curious. Most of my driving is commuting here in the SF bay area and traffic usually is difficult in a spirited manner so I use predominantly the ECO mode.
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      03-20-2020, 10:21 PM   #51
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What mode do you usually run in when you see the slight MPG increase. Just curious. Most of my driving is commuting here in the SF bay area and traffic usually is difficult in a spirited manner so I use predominantly the ECO mode.
I’m in comfort 99% of the time.
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      03-22-2020, 11:11 AM   #52
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Quote:
Originally Posted by Enabled View Post
Sedan? RWD?

Keep in mind 6th gear is limited down a bit by a hard transmission software limiter in stock transmission flash, so use 5th or 7th gear for actual engine numbers.
Yep, Sedan, RWD
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      06-08-2020, 11:45 AM   #53
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What do you guys think about kerma tune with xdelete? 2016 328xd post lci
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      06-08-2020, 01:39 PM   #54
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What do you guys think about kerma tune with xdelete? 2016 328xd post lci
The tune won't affect or interfere with xdelete.



xdelete itself is a really screwy way to get rwd, as the rest of the car still believes it is awd, especially the DSC system, which will expect awd as active when it tries to make certain corrections.
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      06-08-2020, 04:05 PM   #55
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Quote:
Originally Posted by Thormus View Post
What do you guys think about kerma tune with xdelete? 2016 328xd post lci
I'm running the KermaTDI tune and RWD mode myself right now. It's not too difficult to get the rear end to step out with DSC off to have fun if you want. Aside from that, that combo isn't terribly different than with xDrive. There are plenty of RWD 328d F30s with the KermaTDI tune.
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      11-06-2020, 02:03 AM   #56
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My tune:

View post on imgur.com


I especially like that gearbox works better now. Also the power is decent now. Injectors are restricting the power.

Last edited by Namusuu; 11-06-2020 at 02:15 AM..
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      03-12-2021, 08:14 AM   #57
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Sorry guys to resurrect an old post. Last time when I showed the difference in speed gain with the tune I was also curious if it had any positive or negative impact on gas mileage. While I got on average on short trips about 45mpg taking it ease I manged with the tune to get 51mpg from a longer trip from Redding to Gilroy (~250miles). I was in CC the entire time unless I had to drastically slow down due to traffic but that only happened twice on the trip.

This of course doesn't correlate what the car would be capable off without the tune, however it it impressive to get speed gains with the tune and not sacrifice economy with it.
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      03-14-2022, 11:42 AM   #58
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I haven't been here in a while. It looks like the N/A 328d is getting more exposer in the tuner world, compared to back in 2017. After extensive research, MY conclusion is that the top 2 tuners are JR and KermaTDI. JR is in my province and is only 1h drive away. However, it looks like the Kerma numbers are better. My goal is to squeeze out as much WHP and wheel torque (400 ftlb wheel hopefully) as possible. And, I also want to delete the SCR, EGR, DPF...Kerma does not offer a delete. My question is, can I Kerma tune for performance and use another tuner for just the deletes? Would I gain from the deletes (exhaust, DPF..) Is there a delete tuner that works well with karma stage 2 tune? I want to delete all emission and get most numbers while keeping it a DD. TIA to all!
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      03-15-2022, 06:31 AM   #59
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Enabled Please tune my F31. My dream goal is 250+hp and 400+ft-lbs.
No off the shelf tuner will give me these numbers even with deletes and high flow exhaust systems.
I'd rather pay you vice a OTS tuner.
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      06-14-2022, 07:30 AM   #60
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Longterm feedback

Hi Guys,
I’m considering taking the plunge on the KermaTDI Stage 1, everything I’ve read sounds great. Does anybody have any longterm feedback on this tune?

Thanks
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      01-05-2024, 12:06 PM   #61
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Hey guys, just bought a 14’ 328d
I am completely unfamiliar with bmw,
But very familiar with diesel performance, as my other vehicle is a 6.7 powerstroke.

The 328d has 130xxx on it. my goal is to fully delete the emissions systems for top longevity and reliability of this car.

I will most likely remove the dpf and hollow it out, instead of purchasing a downpipe.

input on which block off
Plates for the egr cooler, and swirl flap i should order?

Also, what tune?

If youd send me links to these on here or@ five four one/ seven nine seven/ three two one six

I would greatly appreciate it. Thankyou.
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      01-07-2024, 12:04 PM   #62
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Prepping for tune

Car is at 73K and stock. Got all the drivetrain fluids replaced at 60K, new OFHG, and new valve cover a year ago. I'm thinking of putting on the Kerma stage 2 tune on after the car passes smog later this year. I'm planning to do some prep work before the tune goes on, does this sound like the right path?
  1. Walnut blast
  2. Intake and throttle cleaning, replace gaskets
  3. Drive 1000 miles
  4. Load on Kerma stage 2
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Last edited by capt_slow; 01-09-2024 at 10:31 PM.. Reason: Added info
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      01-09-2024, 03:10 PM   #63
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Originally Posted by capt_slow View Post
Car is at 73K and stock. Got all the drivetrain fluids replaced at 60K. I'm thinking of putting on the Kerma stage 2 tune on after the car passes smog later this year. I'm planning to do some prep work before the tune goes on, does this sound like the right path?
  1. Walnut blast
  2. Intake and throttle cleaning, replace gaskets
  3. Drive 1000 miles
  4. Load on Kerma stage 2
Why wait till after smog for Kerma Stage 2?

Your car's sibling (mine) is about to hit 100k later this week.
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      01-09-2024, 10:30 PM   #64
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Quote:
Originally Posted by FaRKle! View Post
Why wait till after smog for Kerma Stage 2?

Your car's sibling (mine) is about to hit 100k later this week.
More peace of mind, really. Thinking it would mean two uninterrupted years of running the tune, even though stage 2 can pass smog. My UOA came back and figured to sort out the silicon levels first. Got a new air filter coming in, last replaced about a year ago.

Quote:
Wear metals are generally higher than before. These levels are still okay for this type of engine, but there's no doubt metals are higher than we found in the past. Maybe that's because silicon is dirt and it's causing extra wear. Check the air filter and intake plumbing for issues in case unfiltered air is getting into the engine. Silicon could be from a harmless sealer/lube, and the extra metal could be from parts wearing in, if the engine had any work done since last time. The oil is fine, physically, and contamination is absent. The 3.8 TBN is good, but check back in 6K-7K miles.
FaRKle! how has the sibling been faring overall and with the tune? Any issues or majors?
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      01-09-2024, 11:52 PM   #65
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Quote:
Originally Posted by capt_slow View Post
More peace of mind, really. Thinking it would mean two uninterrupted years of running the tune, even though stage 2 can pass smog. My UOA came back and figured to sort out the silicon levels first. Got a new air filter coming in, last replaced about a year ago.



FaRKle! how has the sibling been faring overall and with the tune? Any issues or majors?
Sibling has been good! I've actually been running something *spicier* for about a year now, and it's passed our stress tests (summer track days at Thunderhill) and gone through a lot of refinement. Stage 2 is still the smoothest/most refined and easiest to do (no extra hardware required), but there are other things that can be tinkered with.
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      01-11-2024, 01:27 PM   #66
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Quote:
Originally Posted by FaRKle! View Post
Sibling has been good! I've actually been running something *spicier* for about a year now, and it's passed our stress tests (summer track days at Thunderhill) and gone through a lot of refinement. Stage 2 is still the smoothest/most refined and easiest to do (no extra hardware required), but there are other things that can be tinkered with.
very interesting, I'm listening..... (currently have Kerma Stage 2)
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