[chowser51]

Originally Posted by Fade_The_Public

Subbed to the thread!

Dyno day!

Did you get?

I’m happy so far with my stage 1 93 on my b46. Waiting to move so I can install a catless downpipe and switch to stage 2. Right now my car is stock. Not sure what crank power is. Closer to 275? is my guess. Mustand dyno was showing 231 at the wheel.

[floridaorange]

Originally Posted by Luverse

i sell the car for around US$ 27.200

my car is made in 2014, with around 34k miles (55k km) when shit happen

Yes i contacted PTF and send the log with stock and tune
at first i'm using Stage 2 AGG 93 oct,
PTF said that my fuel quality is not good, and advise to use Stage 2 AGG 91 oct, but keep using the 93 oct fuel
i flashed to Stage 2 AGG 91 oct, and everything seems better, my car response better and the power feels more solid, send PTF the log again

but after i drove around 200km..boom.. rough idle, drivetrain error

in my country, the number of blown N20 engine due to remap (any remap, not just BM3), is quite large. My BMW authorized service center has encountered more than 20 blown N20 engine (both 320 and 328), with various damage from light to beyond repair. But for B48 engine, they never seen the engine blown, even after remap and pushing pas 300 hp, at least up until now.

[QUOTE=Luverse;25760933]

Originally Posted by floridaorange

, the number of blown N20 engine due to remap (any remap, not just BM3), is quite large. My BMW authorized service center has encountered more than 20 blown N20 engine (both 320 and 328), with various damage from light to beyond repair.

Exactly.

My tuning shop said the N20 was a ticking time bomb.

[Luverse]

Originally Posted by floridaorange

Exactly.

My tuning shop said the N20 was a ticking time bomb.

i believe someone from this forum also said N20/N26 is the most fragile engine in the world, it is not a question of will it blow, but when it will blow

that said, BMW only used N20 engine for 3-4 years, which - imo - quite short lifespan?
they replace with B48 engine for F30 LCI, and continue to use B48 engine for all new G20 series

[Fade_The_Public]

Originally Posted by chowser51

Did you get?

I’m happy so far with my stage 1 93 on my b46. Waiting to move so I can install a catless downpipe and switch to stage 2. Right now my car is stock. Not sure what crank power is. Closer to 275? is my guess. Mustand dyno was showing 231 at the wheel.

300+ Crank HP...2 runs were just under 300 and the final pull was over.

Not going to lie, I have no intentions of pulling at this motor any longer. I remember what stage 0 with no mods felt like. This Stage 2 with full bolt on feels like it's just too quick for its intended purpose. I can for sure see why 320i N20 has reports of blowing on Stage II.

[MilanF30]

Haha N20 is blowing even without mods, there's no obvious rule or pattern, it's just fragile like that...

[F30Unit]

What I'm getting especially with this engine is that I'm better off saving my money for 340i than try to do anything with it

[DadzBmer_N2o]

Originally Posted by Dronamashina

Yes MG flasher is a good alternative to bootmod3. Why is everyone so obsessed with BM3?

Because you can only use this on the B engine's and not the N's currently.

[DadzBmer_N2o]

Originally Posted by Luverse

i believe someone from this forum also said N20/N26 is the most fragile engine in the world, it is not a question of will it blow, but when it will blow

that said, BMW only used N20 engine for 3-4 years, which - imo - quite short lifespan?
they replace with B48 engine for F30 LCI, and continue to use B48 engine for all new G20 series

I hope those B engine timing chains last a lifetime, good luck if that ever breaks, will cost waaay more to get that serviced than the N's, you know your timing chain is in the back of the engine like an Audi and need the engine completely taken out to get that serviced...

[DadzBmer_N2o]

Originally Posted by Naiters

With BMW nowadays you are not speeding anything imo. Time intervals for something to fail are random but it's mass is located very early in the car's lifetime.

My friend's N57 diesel for example had a timing chain replaced at around 15k miles. Another one's M4 F82 had the whole transmission replaced at 30k miles. Can you speed that up lol? Super OEM quality?

Please stop telling people this bullshit about "stressed intervals" "not capable to maintain" because of your blown engine. I get it but until you show me a research that compares reliability of tuned vs stock n20s we are just reading tea leaves.

I think @mike@x-ph.com wrote somewhere that from his experience there is no significant deviation between tuned and stock f30 reliability.



Best regards

Originally Posted by floridaorange

Quite right! I don't have empirical data to give you as to why my imperial blue 320i didn't last past 48k. And I did have the $3,600 option of replacing my engine (excluding liquids and gaskets). But my German Auto mechanic told me how common a blown N20 was. I didn't make that up, as you've eluded to.

Anyway, seems stage 1 may be the safe spot. I only ran stage 2 - as the gains were very addictive.

Thas weird cos here in Rockville, MD where i get my service done at, i asked that question to my SA and he said he hasn't seen one case at there dealership with that problem.

[floridaorange]

Originally Posted by DadzBmer_N2o

Thas weird cos here in Rockville, MD where i get my service done at, i asked that question to my SA and he said he hasn't seen one case at there dealership with that problem.

https://www.dealerservicealternative.com/

Ask for Larry. Nice guy, will be happy to talk with you. Tell him your friends with John who had the blown blue Bmw 320i.

[DadzBmer_N2o]

Originally Posted by floridaorange

https://www.dealerservicealternative.com/

Ask for Larry. Nice guy, will be happy to talk with you. Tell him your friends with John who had the blown blue Bmw 320i.

Was that your blue blown 320i?. Well this Bimmer dealership service's alot of Bimmers in my area, but like anything else in life, salt grains are easier to swallow, lol..

If i end up keeping this after its paid off, i will most likely do the pre-emptive TC service thru my Indie shop just to make sure (i only put about ~500 miles per mthly). I am not going past Stge 1 for my car, i kinda of like that way it drives now with the BM3, i just started to datalog with my Pi3 and hopefully get those uploaded and send them to PTF..

[RMMAGA]

B48 Reliability

I did manage to damage a B48 piston, cracked the ring landing, like the photo that was posted but less severe. Engine was rebuilt with a new set of pistons and it is fine now.

However to be fair I was stupid, stock exhaust and turbo running 24 psi on a JB4, 14.7 AFR and 15 deg of timing, it was not smart. That was before they cracked the ECU.... I was running 93 and had meth system, however I think that the meth may have cut out as I was drifting it at the time it failed due to sloshing, and then that was it.

BM3

I am now tuning my own BM3 tune, with full custom exhaust and turbo, at 22psi, with meth + e30/93 mix. 12 AFR and 12 deg of timing, and it looks really stable and good. If you want more customization go for BM3, we just had the corona virus lock down here, so empty roads, and a lot of time on my hands so I took a week to learn how to custom tune with BM3 and it is really powerful tool.

My only issue with BM3 is that the data-logging is totally buggy, I cannot get it stable, I keep need to reset it, and the constantly crashed while logging, I have had many support requests, they are very helpful and reply within 1 day, great service, but they cannot seem to solve the logging issue.

These high compression 20i engine love timing but they also love to detonate, high octane fuel like e30 or meth is key to get power out of them with safety IHMO.

I did this draggy few days ago, however the roads here have poor traction as they get covered in dust, also I only have about 3mm left on my 225mm wide PS4 rear tires, I can only hold ~0.6G acceleration, almost in FWD territory, you expect >0.7 with typical RWD car

How interpret draggy results:

FYI for 0-100, its as simple as Acceleration * Time = Speed, 100km/h = 27.8 m/s, 1 G = 9,8 m/s/s, so if you can:

Average 1 G, gives typical AWD limit of about 2.83s
Average 0.7 G, gives typical RWD limit of 4.05s
Average 0.55 G, gives typical FWD limit of 5.15s

So its really a game of how much traction you have any how much power you have. Power is what G you can sustain near end of the run where your not traction limited, in my run I am traction limited up to about 70km/h so it is not that meaningful.

[Dronamashina]

Originally Posted by RMMAGA

I did this draggy few days ago

Do you have 100-200 kph numbers?

[DadzBmer_N2o]

Originally Posted by RMMAGA

B48 Reliability

I did manage to damage a B48 piston, cracked the ring landing, like the photo that was posted but less severe. Engine was rebuilt with a new set of pistons and it is fine now.

However to be fair I was stupid, stock exhaust and turbo running 24 psi on a JB4, 14.7 AFR and 15 deg of timing, it was not smart. That was before they cracked the ECU.... I was running 93 and had meth system, however I think that the meth may have cut out as I was drifting it at the time it failed due to sloshing, and then that was it.

BM3

I am now tuning my own BM3 tune, with full custom exhaust and turbo, at 22psi, with meth + e30/93 mix. 12 AFR and 12 deg of timing, and it looks really stable and good. If you want more customization go for BM3, we just had the corona virus lock down here, so empty roads, and a lot of time on my hands so I took a week to learn how to custom tune with BM3 and it is really powerful tool.

My only issue with BM3 is that the data-logging is totally buggy, I cannot get it stable, I keep need to reset it, and the constantly crashed while logging, I have had many support requests, they are very helpful and reply within 1 day, great service, but they cannot seem to solve the logging issue.

These high compression 20i engine love timing but they also love to detonate, high octane fuel like e30 or meth is key to get power out of them with safety IHMO.

I did this draggy few days ago, however the roads here have poor traction as they get covered in dust, also I only have about 3mm left on my 225mm wide PS4 rear tires, I can only hold ~0.6G acceleration, almost in FWD territory, you expect >0.7 with typical RWD car

How interpret draggy results:

FYI for 0-100, its as simple as Acceleration * Time = Speed, 100km/h = 27.8 m/s, 1 G = 9,8 m/s/s, so if you can:

Average 1 G, gives typical AWD limit of about 2.83s
Average 0.7 G, gives typical RWD limit of 4.05s
Average 0.55 G, gives typical FWD limit of 5.15s

So its really a game of how much traction you have any how much power you have. Power is what G you can sustain near end of the run where your not traction limited, in my run I am traction limited up to about 70km/h so it is not that meaningful.

Just curious, i am no way an expert on this lol, the BM3 Boost By Gear (Reduction%) yet. I was reading a thread where PTF said its a way to get better traction, especially from the set up you currently have. It will be located in the OTS tune in your "Mu Maps" go to Config settings..

[RMMAGA]

I did a 10.68s 100-200, that was at 22 psi and running the e30 BM3 OTS, I will try to get, a new run once I fine tune it, if I can get under 10s I think that would be a good result, I didn't have the XHP trans flash when I did it, the trans flash cuts ~0.1s form each gear change, so that will also help shave 0.2 - 0.3s.

BM3 OTS map was also limited to 6500 RPM , with a custom I increased it to 6850 RPM, which should get me a bit more top end.

Also fighting some timing corrections on the OTS map and my custom map, I think it is not real, most of them happen on spool and reducing the timing or AFR does not seem to help it, working up the courage to increase the knock threshold table in BM3 but little apprehensive as its not very clear exactly how they work, if anyone has done this or knows how they work please share, for example would I just offset the whole table by lets say 10% and try it out?

[Dronamashina]

Originally Posted by RMMAGA

I did a 10.68s 100-200, that was at 22 psi and running the e30 BM3 OTS

So are you saying that bm3 e30 ots has 22 psi of boost? 10.68 is very good result btw!

[Luverse]

Originally Posted by DadzBmer_N2o

I hope those B engine timing chains last a lifetime, good luck if that ever breaks, will cost waaay more to get that serviced than the N's, you know your timing chain is in the back of the engine like an Audi and need the engine completely taken out to get that serviced...

i'm aware of that too
that's why i'm staying on stage 1 and had extended my warranty to 10 years, for peace of mind

[RMMAGA]

I used JB4 stacked on the BM3 e30 OTS to increase it form about 19 PSI to 22 PSI, I had the boost set flat form 4000 - 6500rpm at 22 psi in the JB4, and it tracked that pretty close, like within 1 psi. I would expect around a 13s with just the OTS flash.

[Luverse]

Originally Posted by RMMAGA

I used JB4 stacked on the BM3 e30 OTS to increase it form about 19 PSI to 22 PSI, I had the boost set flat form 4000 - 6500rpm at 22 psi in the JB4, and it tracked that pretty close, like within 1 psi. I would expect around a 13s with just the OTS flash.

wow, are you sure it's safe?
my friend VW Golf GTI Mk6 is using the same method, using revo stage 2 remap stacked with dastek, the engine is done after 5k km

[DadzBmer_N2o]

Originally Posted by Luverse

i'm aware of that too
that's why i'm staying on stage 1 and had extended my warranty to 10 years, for peace of mind

Sorry i wasn't bashing your B48, as it may have come across, i think all these Bimmers will have some that are more prone to injury from the get go off the factory and who knows who will end up with one, and of course we all, meaning those with the x-drive's will have to worry more about the transfer case problems that i see popping up everywhere across the board...

[F30Unit]

Thank you all for your submissions and insight. Interesting seeing almost 60% using bootmod3.

Did most of you wait after warranty to flash stage 1?

Also is there anything other than the chain that needs to be checked? I got the 2017 so I think that issue was resolved, but please let me know if there are other known issues I should keep an eye on.

17 320i N20

[DadzBmer_N2o]

Originally Posted by superchargedturbo

Thank you all for your submissions and insight. Interesting seeing almost 60% using bootmod3.

Did most of you wait after warranty to flash stage 1?

Also is there anything other than the chain that needs to be checked? I got the 2017 so I think that issue was resolved, but please let me know if there are other known issues I should keep an eye on.

17 320i N20

I waited after the warrant was up, and i did a recall check using my VIN to make sure as well..