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My 2023 absolutely made a click from the motor when switching modes, but it was only audible from outside the car. You can hear it in this guy's video at 12 seconds and 20 seconds. It's a dinan exhaust, but still the same OEM flapper motor.

Ventilation Hose Part Number: 12262-WAA03

Hey the megathread is back and merged!

The ccv into the bottom of the block is a one way check valve IN to the crankcase.

This picture of a failed jxb carrier just popped up today

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Our generation of b58 is does not have a MAF, so a leaky intake or charge pipe will not affect AFR or fuel trims.

Rainy farewell to pitt race with @rwense

You will overwhelm the stock brakes long before switching oil to 5w40 becomes a necessity, assuming you have the power and pace.

Correct. There is a slight nuance because gas pressure rises non-linearly, but in a nutshell, yes. Recall springs in parallel add keff = (k1+k2), but if you look at the spreadsheet, the tire stiffness is a spring in series keff = (1/k1+1/k2)^-1 = (k1*k2/(k1+k2))

ok, I'm calculating about ~50 lbf/in rate from the gas pressure with those specs, so the coil spring still dominates.

Addendum for those with the updated AJ Hartman reinforcement plate. The plate itself at about 1/8 inch of thickness to the trunk, so the 1/4 inch spacer will be too high. I recommend getting a stack of 1/16 inch spacers (again, 1 inch OD, 3/8 inch ID) and using 2. Since the bottom surface...

Possible protool coding solution, though it was on an older car. Will keep digging. https://www.e90post.com/forums/showthread.php?t=1009941 $540 might be a backup option, if available https://www.e90post.com/forums/showthread.php?t=1459787 It might be possible to use bimmercode instead...

Refactored with calculator for gas pressurized shocks, prefilled by eyeballing some MCS/JRZ dimensions on google. added damped frequency and settling time eq's as well. to use: only need to fill in white cells in a given column. grey and color cells are calculated. to do: get estimates...

Beautiful machine all around. 🤩

MCS has a range of 6 bar to 18 bar. Can you measure the shaft with a digital caliper or tape measure? It should be the diameter of whatever passes thru the shaft seal. We can ballpark the internal canister volume and area if you measure the external dimensions for me

What is the shaft diameter and canister prefill pressure that you're running? I can calculate the gas contribution to spring rate at full droop for you.

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Found it. 740 replies lost to the aether. https://www.supramkv.com/threads/xhp-reviews-and-feedback.13166/

I was about to point you to the huge xhp megathread that I, myself, remembered posting to. But it looks like the poster got banned or something and now the thread has gone missing, so I'll give you a pass on that one. @Supra93 or maybe @JT any chance you could find that thread and revive it...