05-11-2024, 05:21 PM | #353 |
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So happy I went with the P500. It’s not for everyone and in a purely track application I think M2guru is on to something with the 750 but this thing flows better up top and so far still retains the low end grunt I love so much about the OG M2 during street driving. I think that will only grow more true as we scale up power.
I didn’t get dropped today by a 991.1 GT3 on the main straight today like I would have in the past and I was reeling in my buddies E92 M3 track car when previously we were dead nuts even. On the lower power map too. Will try map 2 tomorrow in the cool air and see what she do. Feel confident this thing will lay down north of 450whp on ethanol which is right on target. *edit* ran map2 today which is hotter than map1 and picked up a few peak mph. Can’t wait to get this thing turnt up. Last edited by ThreeStripes; 05-12-2024 at 03:48 PM.. |
05-12-2024, 09:48 AM | #354 |
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Well...I got an error during my track day Friday that said my wastegate needed adjustment.
The error read: 123421 - Electric wastegate, learning limit stop: Start position (wastegate open) not found. I thought I adjusted it too far after we talked in this thread about my WGDC numbers being a bit different than some of us expected. The car wasn't overboosting. If anything, it was underboosting (lots of lag) as you may be able to see in my recent video. I went to make the adjustment this morning and my wastegate stuck - wasn't moving by hand at all. I LIGHTLY tapped it with a hammer and it moved about a quarter of inch (5mm). I can barely get it to budge back and forth by hand that 5mm. Something is wrong with the wastegate. Not sure if I'll get it fixed within three weeks for my next track day. I'll be contacting PURE Monday. :-( |
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05-12-2024, 11:05 AM | #355 | |
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05-12-2024, 04:24 PM | #356 | |
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05-12-2024, 05:12 PM | #357 | |
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05-12-2024, 09:52 PM | #358 |
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M2guru sounds like you got a defect from pure
I had a similar issue when I was reinstalling my stock turbo on my buddy’s car. Same error but it turned out to be the electronic motor itself that had been damaged during transit. Definitely annoying as hell tho. Hope pure gets it figured out for you!
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05-13-2024, 03:23 PM | #359 |
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So I emailed PURE yesterday and called them today. Jimmy answered my call and was super helpful - I am very impressed!
He said that there have been racecars that have had wastegate sticking issues due to the excessive heat of racing and they have successfully increased the tolerance of the wastegate flapper to account for the additional heat. He offered to send me the hotside with the increased tolerance incorporated before I send anything to him so that I can minimize downtime. Assuming everything goes as planned, this is a VERY POSITIVE experience working with PURE! I'll keep y'all updated. |
05-13-2024, 07:39 PM | #361 | |
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05-14-2024, 06:23 PM | #362 |
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The hot side is all ready to come out. Just have the v-band connecting the hot and cold sides remaining to be removed. I am going to try to just remove the hot side and leave everything else connected on the cold side. Anyone know if this has been done before? I'll try to get the hot side out tomorrow when I have more energy.
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05-15-2024, 01:07 PM | #365 |
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Just tasted my first couple licks on emix. Wow. Pure500, Dorch S2, custom tune from Bend Calibration, and Emix is a combo boys.
If this is what it feels like just getting started, I can’t image how people push 500whp+ regularly on the street. |
05-15-2024, 02:58 PM | #366 |
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I think of this often. On the track, warm 200tw or less tires give quite a bit more traction than cold tires so that power is being put into making the whole car go forward vs. spinning the tires.
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05-15-2024, 04:04 PM | #367 |
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Glad to hear, can’t wait to see some logs and vids…Can tell you from experience; under 60/70degress F its a lil hairy..car builds boost better and tires/road are slicker. Rear kicks out really easily. Im probably floating at/around 600..4th/5th gear is soooo good though. I have another revision to test out, but weather and baby duty is keeping me from it…
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05-15-2024, 05:01 PM | #368 |
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Pure750 stuck wastegate
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05-15-2024, 05:33 PM | #369 |
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Are you still going to do a 93 only dyno and see what it makes? I've been following this before I jump on a turbo upgrade. E is not available in my area within reason. So I'm really curious what it does with 93.
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05-15-2024, 06:42 PM | #370 | |
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- BM3 S2 91 (with 93oct Shell fuel) - Pure500/Dorch S2/Bend Cal 93 - BM3 S2 91 (with 93oct Shell fuel) - Pure500/Dorch S2/Bend Cal Emix Max Effort What I’m trying to show is what adding a Pure500 and HPFP can do over the common OTS BM3 setup on the same dyno. 20 years ago in the turbo scene you could find dyno charts of everything so it’s been weird to not see more dyno graphs readily available. Maybe they’re all on instagram and Facebook now and I’m just an old clinging to a message board |
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05-15-2024, 06:53 PM | #371 |
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Also regarding the E85 access “within reason”, it’s dirt cheap race gas. If you have to walk 50mi both ways and carry a 5gal jug on your back do it. To each their own and what not, but it’s very very awesome and fun and you should do it.
One of the biggest constraints these cars have besides IATs and the HPFP is knock resistance. You get rid of that with Emix, and the car comes alive. Having a 5gal jug of it around even if you don’t run it routinely is worth the cost of entry with the Bend Cal flex kit and a custom tune. Your car is going on a lift anyways. Install cost is marginal as a result. I highly recommend anyone on the fence that can add emix to a turbo/HPFP combo do so. |
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05-15-2024, 06:57 PM | #372 | |
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It pulls less stronger in higher gear at higher speed. That's big turbos territory. There is no way I'd speed over 130mph on freeway in Los Angeles. I learned it in a hard way after getting pulled over by POPO last year. |
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05-15-2024, 07:03 PM | #373 | |
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I agree - what’s missing from forums now is real tangible information - I almost never see dyno graphs and barely a log. Most post are “this is good and made me feel better”
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VGSON228.00 |
05-17-2024, 03:35 PM | #374 |
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Question: Installing my pure750 now and the inlet has very tight fitment with the oil or coolant (not sure which) line that's on the right side of the turbo in the first picture. Did you run into any similar issues? Or did it just go right on?
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