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      12-11-2019, 02:58 AM   #529
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Quote:
Originally Posted by RoIIouT View Post
Apologies if this has been address before (I could not find anything).
I have a 2016 340i xdrive with a catless VRSF and Bm3 Stg 2 93.

Everything was running very good until I changed my spark plugs last Saturday. I am running NGK 94201 gapped to 0.022' - 0.023'.

Occasionally, when I am rolling on the throttle in about 2nd gear around ~5k RPM I get a sudden loss of power and hear very loud backfire from the downpipe area. This is extremely hard to reproduce as I have not found a consistent way to make it happen. I'm hoping maybe it has something to do with the tune and it's not a larger issue. I haven't tried flashing back to stock, but I may do that later this week and drive on it for sometime to see if the issue is resolved.
If it's the sparkplugs, why the hell would my car be running worse on (technically) better plugs?

Also, sometimes when pulling the car feels hesitant and jerky, but I'm think this could be related to putting on fresh snow tires? I don't really notice any rpm drop like in the other issue.

I appreciate any input.
Thanks.
I heard my friend had the same problem . what he did was flash to stock, drove a bit, refuel and then flash it back to tune and its gone
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      12-11-2019, 02:42 PM   #530
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Quote:
Originally Posted by vinzcast21 View Post
I heard my friend had the same problem . what he did was flash to stock, drove a bit, refuel and then flash it back to tune and its gone
Thank you, I will try this.
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      12-14-2019, 03:35 PM   #531
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I switched back to the stock map and the car pulls without issues.

Below are 4 links of of the data log. I wish I knew how to read them, but if anyone that knows how could provide insight, I would greatly appreciate it.

I also have a ticket open with PTF to see if they have any input.

Pull 1 power cut:
http://www.bootmod3.net/log?id=5df54938c090c6327e1563bd

Pull 2 power cut (only the second pull cut hard):
http://www.bootmod3.net/log?id=5df5498dc090c6327e1563c0

Pull 1 stock map no power loss:
http://www.bootmod3.net/log?id=5df54e5cc090c6327e1563d2

Pull 2 stock map no power loss:
http://www.bootmod3.net/log?id=5df54ef7c090c6327e1563d7

Last edited by RoIIouT; 12-14-2019 at 05:58 PM.. Reason: removed images, added links
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      12-14-2019, 05:08 PM   #532
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Quote:
Originally Posted by RoIIouT View Post
I switched back to the stock map and the car pulls without issues.

I attached 4 images of the data log. I wish I knew how to read them, but if anyone that knows how could provide insight, I would greatly appreciate it.
The images labeled Pull1 and Pull3 are the pulls where I am getting power cut at around 5k RPM.

The images labeled stockmappull are obviously the stock map, where I am not getting the power cut.

I also have a ticket open with PTF to see if they have any input.
We need links to your logs, not screenshots.
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      12-14-2019, 05:57 PM   #533
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Originally Posted by G.Newt View Post
We need links to your logs, not screenshots.
Sorry about that. Thank you for letting me know - I updated my reply.
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      12-15-2019, 10:18 AM   #534
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Quote:
Originally Posted by RoIIouT View Post
Sorry about that. Thank you for letting me know - I updated my reply.
I posted on fb too but your car is overboosting and the hpfp is crashing. hitting 21+psi when the target is 16.5.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-24-2020, 12:48 AM   #535
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HPFP possible issue

Hi guy's
New here and a big thanks up front for any info.

Yesterday had a full reflash tune by a very reputable company, pre tune run car was delivering 341 BHP and post tune it's delivering 411 BHP and 611nm torque.
Question is the technician said he can hear a ticking noise coming he thinks from the HPFP and said it could be the bearing that actuates the pump ? they have done a lot of B58 tunes and did say mine sounded different albeit slightly due to this noise he can hear.
I myself can't hear anything but that means nothing lol
Did an oil and filter change and NGK spark plug change 1 week prior the tune to make sure it was at it's best.
Car is 2016 stock 340i except from full cat back remus exhaust system.
Had the noisy cold start removed and the sport display update to show new power levels, running extremely well and my butt dyno can sure feel the extra grunt.
Is it worth me removing the HPFP and pulling the follower to pump drive out for inspection ?
29000 miles and ZERO issues so far.
Anyone want to see the dyno print out i will sort it.
Older dude but still love my cars

Last edited by bellguy; 01-24-2020 at 12:55 AM..
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      01-24-2020, 10:58 AM   #536
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Quote:
Originally Posted by bellguy View Post
Hi guy's
New here and a big thanks up front for any info.

Yesterday had a full reflash tune by a very reputable company, pre tune run car was delivering 341 BHP and post tune it's delivering 411 BHP and 611nm torque.
Question is the technician said he can hear a ticking noise coming he thinks from the HPFP and said it could be the bearing that actuates the pump ? they have done a lot of B58 tunes and did say mine sounded different albeit slightly due to this noise he can hear.
I myself can't hear anything but that means nothing lol
Did an oil and filter change and NGK spark plug change 1 week prior the tune to make sure it was at it's best.
Car is 2016 stock 340i except from full cat back remus exhaust system.
Had the noisy cold start removed and the sport display update to show new power levels, running extremely well and my butt dyno can sure feel the extra grunt.
Is it worth me removing the HPFP and pulling the follower to pump drive out for inspection ?
29000 miles and ZERO issues so far.
Anyone want to see the dyno print out i will sort it.
Older dude but still love my cars
if you could post a recording that'd be great
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      01-24-2020, 11:24 AM   #537
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It's normal to hear injector ticking on our engines. Sometimes you'll also hear the evap check valve working. You should be fine.
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      01-25-2020, 02:11 AM   #538
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Thanks for your replies guy's, i will take a vid over the weekend but also glad to hear you feel it is ok lol.

This is the dyno print out, sorry it was folded in my wallet



Last edited by bellguy; 01-25-2020 at 04:45 AM..
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      01-28-2020, 06:00 PM   #539
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Took my 2016 340i with 50k miles in for low coolant and a rattling noise on cold start that goes away when the engine is warmed up. Rattle turned out to be the waste gate but not severe enough to warrant turbo replacement. BMW states the noise is normal... I’m not happy with that answer, has anyone else experienced this with the B58? I know this was a common problem on the N54.
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      01-28-2020, 06:16 PM   #540
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Quote:
Originally Posted by StannisBaratheon View Post
Took my 2016 340i with 50k miles in for low coolant and a rattling noise on cold start that goes away when the engine is warmed up. Rattle turned out to be the waste gate but not severe enough to warrant turbo replacement. BMW states the noise is normal... I’m not happy with that answer, has anyone else experienced this with the B58? I know this was a common problem on the N54.
I was about to say .. welcome to N54 world lol. At this point, you might need to monitor for smoking and start saving up for a replacement.
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      01-28-2020, 06:37 PM   #541
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Quote:
Originally Posted by G.Newt View Post
I was about to say .. welcome to N54 world lol. At this point, you might need to monitor for smoking and start saving up for a replacement.
I’m just under 50k miles but the car is CPO so I should have one more year of warranty coverage. I’m going to keep an eye on it. If it needs replacement when I’m out of warranty I’m just going to put on an aftermarket turbo and tune it. Turbo replacement on the B58 doesn’t look too hard based on the data that’s on Newtis.
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      01-29-2020, 11:15 AM   #542
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2016 340i 41k mi

Dinan intake, vrsf downpipe, remus catback exhaust, bm3 stage 2

Car went into limp mode on sunday, multi cylinder misfire. Flashed back to stock and took to dealership. After diagnosis, bmw states scoring on cylinder 6 walls. Engine replacement required. BMW denies warranty due to dme tampering.

Obviously I'm not about to fork over the $32k they quoted for engine replacement. What are my other options? Sleeves and forged pistons? Can I turn this into an opportunity to upgrade some stuff? I'm already waiting on a vtt gc turbo upgrade and have a supra pump ready to install. Thoughts?
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      01-29-2020, 11:55 AM   #543
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Quote:
Originally Posted by ///Madgreek1 View Post
2016 340i 41k mi

Dinan intake, vrsf downpipe, remus catback exhaust, bm3 stage 2

Car went into limp mode on sunday, multi cylinder misfire. Flashed back to stock and took to dealership. After diagnosis, bmw states scoring on cylinder 6 walls. Engine replacement required. BMW denies warranty due to dme tampering.
F

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      01-29-2020, 12:05 PM   #544
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Quote:
Originally Posted by ///Madgreek1 View Post
2016 340i 41k mi

Dinan intake, vrsf downpipe, remus catback exhaust, bm3 stage 2

Car went into limp mode on sunday, multi cylinder misfire. Flashed back to stock and took to dealership. After diagnosis, bmw states scoring on cylinder 6 walls. Engine replacement required. BMW denies warranty due to dme tampering.

Obviously I'm not about to fork over the $32k they quoted for engine replacement. What are my other options? Sleeves and forged pistons? Can I turn this into an opportunity to upgrade some stuff? I'm already waiting on a vtt gc turbo upgrade and have a supra pump ready to install. Thoughts?
How many mile did you have when you flash to stage 2 or BM3.
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      01-29-2020, 02:00 PM   #545
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      01-29-2020, 02:32 PM   #546
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Quote:
Originally Posted by ///Madgreek1 View Post
2016 340i 41k mi

Dinan intake, vrsf downpipe, remus catback exhaust, bm3 stage 2

Car went into limp mode on sunday, multi cylinder misfire. Flashed back to stock and took to dealership. After diagnosis, bmw states scoring on cylinder 6 walls. Engine replacement required. BMW denies warranty due to dme tampering.

Obviously I'm not about to fork over the $32k they quoted for engine replacement. What are my other options? Sleeves and forged pistons? Can I turn this into an opportunity to upgrade some stuff? I'm already waiting on a vtt gc turbo upgrade and have a supra pump ready to install. Thoughts?
Try replacing spark plugs see if it helps
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      01-29-2020, 02:55 PM   #547
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My first thoughts are always: plugs, coils, or injectors. I would assume bmw started there before digging into the cylinders. Right?
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      01-29-2020, 03:13 PM   #548
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Quote:
Originally Posted by ///Madgreek1 View Post
My first thoughts are always: plugs, coils, or injectors. I would assume bmw started there before digging into the cylinders. Right?
Im gonna go out on a limb here and say bmw wouldnt say theres scoring in the cylinders with out seeing that.... plugs/coils ect isnt going to make jack all difference
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      01-29-2020, 04:40 PM   #549
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Originally Posted by jackstrath View Post
Im gonna go out on a limb here and say bmw wouldnt say theres scoring in the cylinders with out seeing that.... plugs/coils ect isnt going to make jack all difference
That's what I figured. Anyways I'm trying to look at this as an opportunity to build it better. Anyone know anything about getting the cylinders bored out and upgrading pistons and rods? That would solve the issue right? Or should I move on from this engine as BMW suggests and get a low mileage used replacement? Will the b58 from the g20 m340 swap right in? (I'm sure I'm just dreaming now...lol) anyways I'm totally open to suggestions and others experiences as this is the first catastrophic engine "failure" I've had to deal with...
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      01-29-2020, 05:06 PM   #550
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I’m sorry to hear about the possible loss. Unfortunately this can and does happen in this game. Not all the time, but it does happen. I have broken a few motors in my day, but none with the price tag of a B58.

I think the next stage in the tuning market evolution of the B58 is to see engine offerings. Built short blocks, ported heads, etc. maybe...

With all these new turbo offerings and the fueling mostly sorted out, people are hitting new power levels. This should increase the number of broken engines, and the subsequent need for solutions to that. The problem right now is that the B58 is relatively new and not enough have blown up to really support offering replacements.

The timing is poor.

There is another guy on the forum who was building a motor with Darton sleeves after he had problems. That seems to have taken way more time and effort than was expected. He knows better than me what the options are. I would try to contact him. Tyler something.

A junk yard replacement will probably be your cheapest option. A built motor is surely possible, but how much and how long is another thing entirely. Probably not cheap.

You can find built N54 motors online for under $10,000, but those motors have been out for considerably longer. I hope we get there soon.

Good luck, I’m interested to see how it turns out.
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