01-24-2023, 12:41 PM | #23 |
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So if the 750 and Ps2 both spool at same rpm, what’s the downside to the 750?
Same spool, and the available 100 more hp.. what am I missing? Is the 750 basically the PS2 version 2? |
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01-24-2023, 01:14 PM | #24 | |
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We'll have to wait and see for a 100% accurate answer. Houtan from the one series forum used a prototype of the Pure750; it was called PS3 at the time. He posted a lot of data.
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01-24-2023, 05:55 PM | #25 | |
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01-24-2023, 09:23 PM | #26 |
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Very excited for dyno sheets vs. OE! This sounds like a fantastic option for us track day goers that appreciate the OE spool characteristics but would like increased power at the top of the rev range! - would love to pair with an upgrade HPFP for E85 (tired of mixing for E20)!
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01-26-2023, 01:33 AM | #27 |
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Holy crap Pure 500 is the ultimate stage 1 turbo?!
I've been considering dinan more and more. Being in NZ means TTe460 is like double the price in UK/Europe. If the 500 has stock spool and I can buy the turbo out right (car is my daily for work and can't be arsed sending a core to the states) then it's seriously compelling. Will probably have to go BM3 to get an OTS tune as MHD doesn't seem to accommodate stage 1 turbo upgrades? |
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01-26-2023, 05:53 AM | #28 |
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I'm interested to see the Pure500 with simple fueling upgrades on 93 to see if we can get notable bump in power without sacrificing too much mid range and straightforward tuning through BM3.
On prior cars I've done the whole process where you get involved on the turbo customizing, then getting it on and scheduling custom dyno sessions, refining everything to get exactly what you want. It was a nice result but took so much focus on time which is not where I'm at now. I'd like a reliable upgrade where you could get everything, have the shop install it, tune it and be on your way. |
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01-26-2023, 06:31 AM | #29 | |
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Stg 2+ Multimap with the PTF Flex Fuel sensor and E40-60 is as easy as it gets to add power. Guessing you’d hit 480whp with the Pure 500: https://f87.bimmerpost.com/forums/sh....php?t=1884838 Last edited by ZM2; 01-26-2023 at 07:24 AM.. |
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///M TOWN16566.50 |
01-26-2023, 09:23 AM | #31 | |
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But, if you can’t find pump E85 easily, buying cans of it is just as expensive as race gas. |
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01-26-2023, 09:51 AM | #32 |
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E85 isn’t near my track sadly so most lug it in. $14.00gal for 100oct gets stupid quick when you drink it as quickly as you do out there.
I may end up resorting to E85 mix for a more powerful street tune if 93 really won’t do 420whp but I think it will get there. Barely. We shall see, but I definitely won’t be lugging jugs of it to the track. Full boost at 3.5k with the Pure750 is interesting though as the power band looks great considering where you live on track. I have a pal with a PS2 car that’s about to get tuned on corn so I’ll get seat time in it to see if I could live with those spool characteristics or not. |
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01-26-2023, 11:33 AM | #33 | |
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Will be interesting to see how the 750 spool compares to the PS2. |
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01-26-2023, 01:00 PM | #34 |
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Shame we can’t have it all. Each choice has pluses and minuses.
I’m telling myself I can be satisfied with 430-440whp on 100oct with the Pure500 since it sees more street duty than track. Pure500, HPFP, and a custom Bend Cal tune has to be better than stock turbo/fueling and BM3. I think I’ll get my moneys worth. Only one way to find out. |
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01-26-2023, 01:28 PM | #35 |
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Same for me, I know 93 is a limiting factor but it's what I'd want for ease. I don't want to work with E85 mixtures and certainly not looking around for race gas. For guys that track and chasing down time, I totally understand that but I just want it for around town driving. Also it wasn't just peak hp for me but also area under the curve, although more linear power would be nice versus falling off in the top end.
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01-26-2023, 08:43 PM | #36 |
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I echo others. Have no availability and no interest in going beyond 98 RON pump fuel.
I want stock like spool for road use only. I don't have power target requirements beyond better extension into redline. 'just' 430-440 WHP is alot for the chassis and tyres already IMO. |
01-26-2023, 09:16 PM | #37 |
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I think you can do 420whp on the stock turbo, on pump (HPFP is needed) but you’re going to lose a lot toward redline. A Pure 500 might do that with less heat - but is it worth $1000 for 40whp at redline?
I got bought a house, got married and now I’m a father all in a year and a half - so I haven’t been able to do all that I wanted to with the car. If the S55 is any indication (and if I ever have a chance to install the MILVS) You could make an extra 20-25whp at redline on the stock turbo, and give a powerband that’s likely similar to what the P500 could do. |
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01-26-2023, 09:20 PM | #38 |
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The increases in area under the curve throughout the entire rev range will be worth it. Plus a lot less back pressure, and less strain on the turbo will make the car more reliable.
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01-26-2023, 09:27 PM | #39 | |
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But just for reference- this is 440whp on the stock turbo. He did it on pump, HPFP and a custom tune- https://f30.bimmerpost.com/forums/sh...1622618&page=3 But he did it how all the PWG guys used to make their big power, by making the power in the midrange before 5500RPM. So the advantage to the P500 isn’t going to be peak power, but the shape of the power curve. |
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01-26-2023, 10:25 PM | #41 | |
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01-26-2023, 11:29 PM | #43 | |
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It should have atleast held on longer because the turbo can flow more.
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01-26-2023, 11:46 PM | #44 | |
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