11-29-2021, 02:20 PM | #23 | |
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If you can’t be with the one you love (:caugh: GT3) then love the one you’re with. |
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11-29-2021, 05:34 PM | #24 |
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What software are you using and did u have to upgrade any fueling components? If you didn't do u notice any issues with fueling because of the tune? This tune looks to be something similar to what I want
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11-29-2021, 08:01 PM | #25 | |
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In fact, it’s possible to max out the fuel pump on pump gas - this tune does not do that. Edit: Bob works with all major tune platforms, including BM3 and MHD (which is what I have) one thing I like about the tune is the ability to hold power towards redline. The OTS tunes just don’t do that, with MHD being the worst. The power is down to 300whp at redline. |
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11-30-2021, 01:50 AM | #26 | |
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11-30-2021, 03:37 AM | #27 |
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Perhaps keeping the budget down inlet pipes and intercooler pipes and a DV might improve things and follow on with an expensive 300 cell down pipe later ?
Ive never used Evolve but they seem to like the Masata charge pipe if the MST is a tight fit ? |
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11-30-2021, 07:52 AM | #28 | |
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But seriously, If you look at dyno graphs of FBO stage 2 tuned cars from 5500 - 7000 the N55 is producing as much power as a M2C. I’m confident if you followed that FBO stage 2 path, you’ll be much happier with the feel of running the car out to redline. The torque party is there when you want to ride that wave, but it’s just as happy to get spun up and shifted at red to use the hp between 55-7 now that I’m modified. Start with a standard off the shelf BM3 tune with bolt ons and if you’re still not happy get a custom tune from there. |
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11-30-2021, 08:58 AM | #29 | |
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I would reach out to mike@x-ph.com (BAM I FIGURED OUT HOW TO TAG HIM) to see what he has available, his costs are usually the most reasonable.
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11-30-2021, 04:54 PM | #30 | |
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The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
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11-30-2021, 05:18 PM | #31 |
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I find it pretty impressive that these EWG N55s make peak power at ~6,200rpms and sustain it to nearly 6600rpms before choking out. Most other late model gasoline turbo motors on the market make max power near 5,000rpms and are done by 5,500rpms. The BMW S55s and S58s are even more impressive for a turbo motor in terms of their ability to breath in the upper rpms.
I also find the power to be pretty linear, especially compared to the powerbands of the N54 and early N55s with the smaller turbo and pneumatic wastegate. Those motors made peak power around 5,400rpms, and when tuned, at around ~5,000rpms. Yes, there can be a wallop of torque in the lower rpms with the N55 when hammering it, but that's the nature of a turbo. Put a heavy engine load on them and you get a lot of torque in return. In stock form, BMW neuters the turbo power delivery a bit to create a more linear, naturally aspirated feel. In the N55, S55, B58, and S58, BMW is running slightly larger turbos than needed to get that higher rpm breathing and manipulate boost/power delivery through EWG control to make torque thick, abundant, and generally manageable across a large range of rpms. It's also largely why it's so easy to gain so much power across the powerband so easily with a basic tune. You can probably tailor the power delivery to be even more linear, but that's going to come at the cost making for a slower than stock car. If you want more upper rpm power and peak power at like 7000rpms, you'd need to go with a larger turbo and then have the tuner work some EWG magic below 5000rpms. With all that, I doubt the car would be any quicker than a Stage 1 tuned M2 N55. The N55s would have different shaped powerbands, but likely similar power under the curve and that's what ultimately dictates overall acceleration.
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The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
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11-30-2021, 06:46 PM | #32 |
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I thought of this post last Saturday when I took my Exige for a drive. I don't drive it much anymore, but when I do I'm always impressed, especially with the immediacy of the power delivery, and how it pulls hard all the way to 8,500 rpm. It isn't nearly as powerful as my M2, but the way the power comes on, and how it sustains is just fantastic. Full disclosure, it's not stock, but really only has I/E/T.
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12-01-2021, 01:59 AM | #33 | |
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For example, my current tune is about 420whp & 420wtq on a half tank of ethanol versus the E30 BM3 map, that did 415whp & 440wtq, or the E30+ map that put down 445whp & 500wtq. The logs/dynos didn't look too great on either bm3 map from what I believe to be the heat soak off of the stock turbo's limitations & a little bit of my intercooler (Wagner Evo II). Lowering torque is supposed to help prevent heat soak and keep the higher RPM's cleaner. If we run a upgraded turbo & stage 3 intercooler we should be fine. Also, NA is just different. I think back to my E90 M3 days. I wouldn't trade that car for my M2 now, but the engine/throttle response/high revving feel & sound was very different & a truly special engine. NA + manual is a dynamic duo! This is another reason why I personally love the S55 & S58 engine especially. The factory turbos produce more power than our N55's & the technology with the air to water cooling versus our air to air is a huge step in the right direction. People with the S58's are ripping 9.9 second 1/4 mile times off of race gas & a tune alone. I'd imagine the dyno graphs & other data is healthy as well for those cars. They're putting down around 550-600whp on pump gas off of a tune alone… pair that with AWD & you're the red light king next to anything that's not a Tesla Plaid or a million dollar supercar.
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12-01-2021, 02:15 AM | #34 |
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Any good recommended tuners in the UK, I have used Litchfield and have been very happy with the suspension work but not sure if they might be focussed on bigger fish (GTR,Porsche)
I live in Bath, so Litchfield are quite close. In many ways it would be great to see other members cars, shame there doesn't seem to be much happening that I have noticed in the UK Still thinking of perhaps Inlet and intercooler pipes and Turbosmart DV to start with ? Seems the DV reduces a little of the lag and improve throttle response and possibly the pipe swap allows a little better breathing. I have the upgraded intercooler which helped |
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12-01-2021, 01:26 PM | #36 | |
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N54 135i 6MT (FBO, JB4 reflash, E30) sold
E90 M3 DCT (FBO, tuned) sold Current: Performance Edition M2 6MT (FBO, ethanol tuned by Bend Calibration/Ecutek) |
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12-02-2021, 12:37 PM | #37 | |
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07-12-2022, 03:37 PM | #40 |
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I think someone mentioned this - I ran across it
From here: https://f87.bimmerpost.com/forums/sh....php?t=1394397 A good custom could likely do better, but you won’t gain much peak power on the stock fuel pump and pump gas. |
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04-21-2023, 08:53 AM | #41 | ||
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Although the chart looks a little less impressive from 5500 to 6300 than I have built it up in my mind over the last few years remembering it (not talking about peak numbers, just the shape of it). Quote:
These graphs look unreal but he's using 103RON fuel apparently, and maybe the dyno is a little optimisic. Last edited by Notaligned2; 04-21-2023 at 09:13 AM.. |
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04-21-2023, 10:47 AM | #42 | |
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I had my own dyno : Very linear, but was hoping to see the power increasing until 6000rpm. Maybe on the next revision. |
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