Unofficial Eventuri vs Karbonius Plenum/Intake Comparison

[e90sanmarino]

Originally Posted by yyzwagon

hey, can you elaborate on this?


ive never dabbled in CF parts, but is the CF finish supposed to be a little malleable and should 'press down' to a human pressing their finger on it?

It should be quite flexible when you press the middle part of the plenum. The tech/engineer guy from Eventuri told me to record the video of me doing so. He confirmed it was not supposed to be like that. I received a replacement which he personally checked and it was way more flexible

[a5m]

Originally Posted by e90sanmarino

It should be quite flexible when you press the middle part of the plenum. The tech/engineer guy from Eventuri told me to record the video of me doing so. He confirmed it was not supposed to be like that. I received a replacement which he personally checked and it was way more flexible

Wonder how many they sent out like this and people never knew, just assuming the plenum didn't make as much a difference as expected...

[pengofaster]

Originally Posted by m34m

Update: I took everything apart and started again. The install was fine except the worm clamps were not tightened enough and gases were escaping. Problem solved and CEL gone. The stuttering sound between 6k and redline when hard on the the throttle remains however. I'm thinking it's the nature of the Karbonius and the resonance it produces. This may simply be the cost of using after market products, there's always unknowns. Sure wish there were OEM CF pieces like this because the fitment of that airbox lid is very sketchy. Anyway the car still sounds epic and I think I can live with that slightly odd sound. If I can set up my iPhone I will try to take some video. Can't be heard with windows down only windows up.

long shot, but could also be your donut gaskets that connect the header to the mid pipe. my car has a similar spittering sound and i am about 100% sure its from there - especially since my last e92 did the same thing. easy lil thing to overlook

[BOSBMW]

Quick question for the fellas w CF plenum.

Has anyone PPF’d their Eventuri set (intake, ducts, engine cover, etc.)?

It’s an expensive kit and I’d hate for it to ever get a scratch or something. I’ve seen some PPFs rated for around 200°C/400°F, so in theory it should be okay under the hood, but I’d to see if anyone has done it and if they had any issues with heat, peeling, yellowing, or edges lifting?

[E92Bean]

Originally Posted by BOSBMW

Quick question for the fellas w CF plenum.

Has anyone PPF’d their Eventuri set (intake, ducts, engine cover, etc.)?

It’s an expensive kit and I’d hate for it to ever get a scratch or something. I’ve seen some PPFs rated for around 200°C/400°F, so in theory it should be okay under the hood, but I’d to see if anyone has done it and if they had any issues with heat, peeling, yellowing, or edges lifting?

I never did that, at the end of the day it’s an engine part. Not likely to get scratched apart from if you wipe it with a dirty cloth.
A larger factor is you’ll kill induction noise by adding another layer of material. I have a new Eventuri, and the clear coat is thin for a reason.

[BOSBMW]

I totally get what you’re saying, but I’m not convinced a thin layer of PPF on the outside would kill much induction noise, it’s not really a sound deadening.

From an acoustics point of view, a thin film on the outside might slightly tame some very high frequency “zing” if the carbon is flexing, but it shouldn’t make the intake noticeably quieter.

I’m genuinely curious though, what makes you think PPF would kill the induction noise?