Karbonius full CF manifold for S65! It's here!

[SYT_Shadow]

Originally Posted by buzz367

This install delay by Shadow is cruel and unusual punishment.....I'm dying for a proper comprehensive sound clip

I haven't heard the car run either! Lets see if later this week! I'm dying to drive it

[Dave07997S]

Just want to say thanks for your input bro, no really. I look forward to everyday to check on the progress of your build.

[E36dude420]

I've had cash set aside for the group buy since day 1...HOW MUCH LONGERRRRRR

[SYT_Shadow]

as soon as I get the info from the Karbonius guy I'll post it

The dyno stuff is unrelated to the group buy. I'd like to have the info but well, it is what it is

[Phil_M_Robinson]

WOW

[94jedi]

SYT_Shadow not sure if I missed it (this is quite a thread) but will you be tuning for 93 oct or e85? This thing would rip on an e85 tune!

[italyix]

So I just installed my M24 airbox and have a question for OP. Do you also get hesitation at low rpm at throttle? Mine takes a second and then it starts going

[SYT_Shadow]

Originally Posted by 94jedi

SYT_Shadow not sure if I missed it (this is quite a thread) but will you be tuning for 93 oct or e85? This thing would rip on an e85 tune!

93. The car isn't made for E85 and I can't buy it at the track anyway, so I want regular pump gas.
It isn't meant to be a dyno queen. This car sees ~40 track days a year.

[SYT_Shadow]

Originally Posted by italyix

So I just installed my M24 airbox and have a question for OP. Do you also get hesitation at low rpm at throttle? Mine takes a second and then it starts going

No hesitation I can speak of. It looked very healthy on the dyno and without a tune drove really nicely

[SYT_Shadow]

UPDATE

I'll post this but lets please keep further discussion either to another thread or via PMs. I don't want to pollute this thread.
https://www.m3post.com/forums/showthread.php?t=1520978

We have been chasing an issue with the E90's engine for a few months. It was smoking like crazy and running rough. After replacing a ton of parts we removed the Xpipe and it turns out the driver's side cat had collapsed, completely blocking the exhaust exit. As the fumes needed to escape somewhere so it blew through the valve stem seals.
We got all this replaced, but apparently doing a couple track days and driving a few thousand miles on the street with the engines sometimes working fine and other times not working fine were too much.
Yesterday it seized while on the dyno. It put down good numbers before that though.

The car evidently had BE bearings and ARP bolts. The current hypothesis is main bearings. We will see.

So Karbonius before/after numbers on my car will have to wait until I can move the airbox to the E92. Likely at the end of August when I'm back from Europe.

[SYT_Shadow]

On a happier note, here are a couple vids

https://www.facebook.com/AlphaNPerfo...1271018665009/

https://www.facebook.com/AlphaNPerfo...1371185321659/

[nycplumber]

Well that sounds different than the other videos.

[tdott]

Originally Posted by SYT_Shadow

Yesterday it seized while on the dyno. It put down good numbers before that though.

that sucks majorly, hope you get it sorted out.

[maristgrad09]

Do you have the pulley upgraded?

[SYT_Shadow]

Originally Posted by maristgrad09

Do you have the pulley upgraded?

Yes. RE pulleys

[MSY]

I'm so sorry man. Was this a high flow cat?

[SYT_Shadow]

Originally Posted by MSY

I'm so sorry man. Was this a high flow cat?

Yes. It sucks.

[deansbimmer]

Originally Posted by SYT_Shadow

Yes. It sucks.

Curious if you know what brand HFC it was? HJS? Vibrant? Magnaflow?

[SYT_Shadow]

Originally Posted by deansbimmer

Curious if you know what brand HFC it was? HJS? Vibrant? Magnaflow?

I'll answer in the 'blown engine' thread, i don't want to derail this one

[L4ces]

Can someone help me understand why this and the MPE is of relevance?
I am missing something. Alone the induction sound will b changed but how does that enhance the MPE? I have an MPE and feel that I can barely hear it so a louder induction sound will drown it out even more right
:?

[Freiheit]

Originally Posted by L4ces

Can someone help me understand why this and the MPE is of relevance?
I am missing something. Alone the induction sound will b changed but how does that enhance the MPE? I have an MPE and feel that I can barely hear it so a louder induction sound will drown it out even more right
:?

It has to do with harmonics and beat frequencies.

Many if not most drivers, when they start modding, don't realize how much of what they thought of as "motor sound" is actually the intake and not the exhaust. I'd say a large segment of the driving public has no idea at all how much the intake adds to the sound. Mixing the intake and exhaust notes is what gives you the overall sound. Slight differences in either factor will cause a greater change to the total sound than those factors considered individually. I've personally noticed this when changing intakes and different sections of the exhaust on my M3.

[SYT_Shadow]

For anyone that hasn't already seen it, the GB is open!

https://www.m3post.com/forums/showthread.php?t=1523882