07-03-2018, 01:39 AM | #45 | ||
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In full disclosure, my friend tried my car first and was expecting similar performance, which is why he wasn't impressed first testing PS2. But I already told in advance PS2 can't match GP500 at bottom end, but may have higher boost headroom, pushing with meth and ethanol, thanks to its bigger compressor and turbine and thus less backpressure. Anyway, we'll dyno when ambient gets down to 75F. Quote:
As for HPFP, log below clearly says no need...And I even will dial back boost a little bit... why is the stock HPFP of mine this strong? No one knows. http://www.bootmod3.net/log?id=5b38d28fd10b437334792d1b As for LPFP, I already bought Fuel-it STG3, but didn't install it yet. From 3 time HPDE I had with M2, the most recent one being last week at F1 circuit with GP500, LPFP is no issue at all however hard I pushed (I'm not your average driver and pushed really HARD), even with nearly empty gas tank in my last section. I probably will sell the Fuel-it.
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07-03-2018, 08:23 AM | #46 | |
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07-03-2018, 08:28 PM | #47 | |
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GreatWhiteM2 Hi Jason, in response to your PM on TTE460, I'll comment here, in case some of others find it useful as well. Hope you don't mind. Thanks.
My TTE friend isn't here to share his experience due to the language barrier. But I'm just as, if not more, familiar with his car power wise than he is, because I helped in data logging and custom tuning his TTE460 with PTF in early 2018. TTE460 of course has a higher boost headroom than STG1 turbo, making an much easier car to tune. It responds to high boost much better than Dinan turbo at 4k+ and thus makes much more power. We drag raced for fun a few times (Dinan turbo vs TTE460). From rolling, every time TTE walked away. You'd not think there is a chance for Dinan turbo. As for 100-200 times, Dinan turbo got its best 8.4s on ideal condition - freezing cold, no extra weight on the car, <1/4 gas in the tank & etc. I cannot reproduce that result. Normally it was high 8s on cold days. However, TTE grabbed low 8s like driving back home on a random day. I reckon it'd be 0.5-0.7s quicker than Dinan turbo in 100-200, given same condition. TTE460 is strong and responsive and exactly is why I considered moving up to STG2 turbo in the first place. I saw you guys got some excellent 100-200 numbers in Britain. These numbers seems at least half a sec quicker than what we got here with our RON98 (the best gas in the best city, equivalent to if not better than US AKI93, according to data logging) and P Gear, a very popular and reliable 10HZ testing device that seems to read very close to Draggy and V box, maybe 0.1-0.2s difference at maximum in 100-200. To better explain TTE460 capability, I'll give some context to the numbers as below. Keep in mind they're gotten on 98RON and on cold days: 100-200kph (62-124mph): Stock M2 - high 10 to 11s Stock M4 base - high 9s Stock ZCP - mid to low 9s FBO flashed M2 - mid 9s, highly dependent of tuning. STG1 turbo M2 - high 8s to low 9s. I think TTE460 will slot into low 8s territory. Properly tuned, TTE460 gains more power over STG1 turbo than STG1 does over stock turbo. In addition to above, below is what I said about TTE460 earlier on another thread and here I quote. Quote:
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07-04-2018, 09:47 AM | #48 | |
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Stock DV. M2 has N20 version DV from factory. There is no need for DV+ unless you go above 20psi. These N20 guys on JB4 have been doing 22+psi peak. I heard only one person in 6 years (since EWG was out) had DV issue.
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07-20-2018, 03:08 AM | #50 | |
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07-20-2018, 03:53 AM | #51 |
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GWM2 - reads like this guy's n55 m235i - stock turbo with PI and e50 blend - supports my view that JB4 & BEF remains top of the heap !!!
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07-20-2018, 05:46 AM | #52 |
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Agreed - 420whp that's 65whp more than my M135i - 2 options for PI -
retrofit ie Fuel-it spacer - via MLP in the UK - pricey though https://www.mlperformance.co.uk/coll...nt=48914251732 So much so that I'd be inclined to go for EoS solution of hi flow intake with 50% larger injectors.....https://www.eospeed.com/products/n55-intake-manifold The above with TTFS HPFP fuel pump may well get similar gains as Bouvie's M235i with less ethanol in the blend.....
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07-20-2018, 10:46 AM | #53 | |
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Speaking of B58, compared to N55 EWG, it has a bigger turbo from factory - 10% bigger compressor and 6% bigger turbine, according to BMW. N55 PS2 is definitely more than 10%/6% bigger. Below I also have attached a picture of B58 turbine housing (4.5" outlet). The blade pitch seems just as conservative as N55 stock. I tend to believe all N55 STG2 turbo (PS2,GP500,TTE460) flows better than B58 stock turbo and thus will make more power, everything else being equal. What's more is that B58 has a higher compression ratio, which is much more octane sensitive under high boost. Alongside with its very incapable W2A IC, B58 is in desperate need for WMI, albeit its freer flow turbofold (than N55) greatly helps ignition timing. That being said, I have no doubt B58 on hybrid turbo has 600+whp potential, with enough octane from WMI+ethanol+race gas. In BMW's way, S58 should have a bigger W2A IC, twin turbo with a freer flow turbofold and, as I suspect, a lower compression ratio to allow for higher boost on pump gas. The same thing also happen with Merc's M177/M178 twin turbo V8. When they use bigger turbo and increase boost for higher-end variants, they lower compression ratio.
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08-14-2018, 03:28 PM | #55 |
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Video : M2 N55 with TTE460 (TPS Performance)
100-200 km/h - from my point of view is that very good performance. I know two Guys experiencing with the new TTE500 at her M2 but not finished yet with engine adjustment etc. |
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08-15-2018, 01:12 AM | #56 |
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08-16-2018, 12:24 AM | #57 | |
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Always take a grain of salt what vendor posts. 9 times out of 10, it's the selected result and you're not given full disclosure what they use to achieve it. I'm fairly certain that you wouldn't be happy with what it takes. TTE and TPS performance both told me in May that they're collaborating in testing TTE550. Strangely, at this point, MLperformace, a British vendor is the first and the only one selling it. And there are no results, from vendor or independent, reported anywhere as of yet.
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08-21-2018, 01:33 PM | #60 |
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08-22-2018, 12:54 AM | #62 |
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doesn't he Ferrari 812 superfast do it in 7.9sec? far out that's quick
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08-22-2018, 12:59 AM | #63 |
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08-22-2018, 01:19 AM | #64 | |
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it does 0-200 in 7.9 seconds my memory is dimming with age
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Last edited by Who?; 08-22-2018 at 01:38 AM.. |
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08-22-2018, 07:46 AM | #65 |
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GoneIn4Secs As I mentioned in the OP, G Power turbo pulls significantly harder than Dinan STG4, even on the same STG2 OTS map.
Tricki I don't know what octane and boost European guys use to make high 7s with TTE460. The best my local TTE460 buddy did with RON98 was low 8s on cold days, normally it's middle 8s. The car was pretty much maxed out octane wise, running 17psi flat. I need to mention if you keep IAT well below 80F, 17psi of boost flat is an extremely high load for a N55.
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08-22-2018, 07:51 AM | #66 | |
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