View Poll Results: tuned? | |||
Stock | 8 | 14.04% | |
Bootmod3 | 35 | 61.40% | |
JB4 | 3 | 5.26% | |
Other (plz specify) | 11 | 19.30% | |
Voters: 57. You may not vote on this poll |
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02-02-2020, 06:56 PM | #89 |
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Drives: F33 430 and F39 M35i
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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. |
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02-02-2020, 07:47 PM | #90 | ||||
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My tuning shop said the N20 was a ticking time bomb. |
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02-02-2020, 08:27 PM | #91 | |
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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 |
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02-03-2020, 11:34 AM | #92 | |
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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. Last edited by Fade_The_Public; 02-04-2020 at 01:11 PM.. |
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02-06-2020, 02:16 AM | #94 |
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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
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02-06-2020, 12:56 PM | #95 |
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Because you can only use this on the B engine's and not the N's currently.
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2013 320ix N20 8AT|BM3 stg1|Muff Res Delete|HPB-LED-Amber-DRL's
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02-06-2020, 12:57 PM | #96 | |
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2013 320ix N20 8AT|BM3 stg1|Muff Res Delete|HPB-LED-Amber-DRL's
IG: DadzBmer_N2o Last edited by DadzBmer_N2o; 02-06-2020 at 01:10 PM.. |
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02-06-2020, 01:03 PM | #97 | ||
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02-06-2020, 01:40 PM | #98 | |
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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. |
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02-06-2020, 01:54 PM | #99 | |
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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..
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02-07-2020, 01:10 AM | #100 |
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B48 BM3 Experience
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. Last edited by RMMAGA; 02-07-2020 at 01:13 AM.. Reason: add draggy |
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02-07-2020, 02:27 AM | #101 |
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02-07-2020, 07:19 AM | #102 | |
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02-07-2020, 08:02 AM | #103 |
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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? |
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02-07-2020, 04:38 PM | #104 |
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So are you saying that bm3 e30 ots has 22 psi of boost? 10.68 is very good result btw!
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02-07-2020, 09:03 PM | #105 | |
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that's why i'm staying on stage 1 and had extended my warranty to 10 years, for peace of mind |
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02-08-2020, 12:48 AM | #106 |
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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.
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02-10-2020, 12:19 AM | #107 | |
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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 |
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02-10-2020, 10:14 AM | #108 |
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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...
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02-10-2020, 06:17 PM | #109 |
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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 |
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02-10-2020, 10:24 PM | #110 | |
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320i, bootmod3, experience, f30, jb4, stock, tune |
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