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I ran half a the track season with front only. The rear really made the car feel more planted, but I don’t think the z4 is as stiff as the Supra. My car used to creak a lot approaching curbs at an angle when it was front only. It was about 3.5 hrs in the driveway. Lowered the subframe just...

solved: lower control arm to the frame came loose. this happened to me on track, but the noise this time presented a little differently…. Possibly because it wasn’t as loose this time around. after looking at the video, the passenger side arm seems to move a tiny bit. The video below was when...

I’ll give everything a once over and also try just removing the swaybar links to see if those are the culprit. wasn’t a huge fan of the whiteline quality when I got them, but they weren’t problematic until possibly this point.

Could use some guidance… I have newly developed creaking moving the steering wheel off center. There doesn’t feel to be any binding in the steering, and I can steer lock-to-lock without issue. The car is 75% track. KW DDCs Whiteline swaybar links Verus camber plates AFE swaybar Right strut...

this is my Spicey map. Usually no more than -3 in a couple cylinders on a straight, and usually correct throughout the pull. Rarely do I ever see up to -6.

I have a similar experience with the Wagner manifold. It’s very effective. Pure 850 turbo.

Any updates on this? I know Verus released a Q&A on this and an install video, but deleting an Aux cooler when coolant temps already get pretty high sounds sus. Obviously the heat from the oil is playing a roll here, and separating the systems sounds reasonable, but I wonder if there’s still a...

Tune fixed it for me. Lowered fuel rail pressure to 4600PSI until 5k RPM, and then 4900PSI after 6rpm. Additionally, we bumped up the oil pressure a bit. same thing, track only. Could never get it to trigger during canyon or WOT, but mine would always trigger WOT mid turn on track. some...

Can someone teach me more about brakes? After my pure850 install, my car is about 10-20mph in straightaways and I can't believe how much additional braking that adds. An example is entering turn 2 at Laguna Seca, I manage to hit about 130mph vs 115mph stock turbo + e50 and I smoked my brakes in...

Pretty straight forward swap, although quite a bit of stuff needs to be removed to get access. Just had to swap over the clip on the fan shroud that holds the transmission cooler line. differences seem to be: - blade design (as already mentioned) - shroud housing - different # shroud flaps and...

I would give these a shot! on the flip side, there has been more brake pad development for the 374x36 brake size. Before I was limited to just EBC blue pads which were completely toast after two track days... Like worn down to the backing plate toast. While not advertised on their website, CSG...

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just wanted to follow up in this since I just ordered a radiator fan. You shouldn't have to change anything else out since the 850watt fan found in our cars shares the same exact wiring, fuse amp, and cut out relay as the 1000watt fan.

OEM core. I don’t think they make a cast version for 850 only 800. if anyone has any advice on what to do to address the turbo glitter, I’m all ears. Seems like most people get away by several low mileage oil changes with no long lasting damage.

Anywhere between 25-28lbs of boost majority of the time. E40 flex tune, just dropped to e30 for track. I really liked the turbo characteristics, but I don’t think I was really pushing this turbo that hard. WGDC ~85% at WOT. Oil pressure was 60-70PSI...

Did 15 track days this year… big willow, streets, buttonwillow, LVMS, Laguna seca, chuckwalla, and Charleston peak/spring mountain! Last week, last session of the day, 2nd lap out at Laguna seca and my pure850 grenaded. Pure was very prompt about handling the rebuild under warranty so we’ll see...

If/when bm3 rev2 comes out, what benefits are you looking foward to? Do you plan on sticking with beefing up DI or will you move to port?

What winter projects are you planning for the car? on the flip side, I got around to doing the s58 injectors. Pretty easy, and you can definitely get by without using the special tool which is nice. When you hit your max injector window, what values are you looking at other than the flag?

Out of curiosity, what lead you to believe that this was an oil pressure tuning issue rather than a mechanical issue?

Since I'm currently chasing this issue, I figured I will also share my research. Short story, for most people newly encountering this issue after adding power and/or HPFP, this is tuning related. To preface, I had a tune finalized w/ stock HPFP and pure850. The stock pump was pushed to its...