K&N Intake vs Eventuri - Sound Difference?

[mtpktz]

ha! funny that this thread just popped up. I am currently in the processing of reflashing my ECU to stock and uninstalling my Karb CSL box because I have to smog the car. I'm doing this myself so I can understand how to uninstall and install the box every two years. yay for noise booo for CA smog! I'm thinking if uninstalling this is a pain, I may just sell it and go with the Eventuri box. hahah

Feel free to PM me if you decide to part with the Karb box.

[elrichmeister]

There's always the Karb OEM box + eventuri for a couples less than the CSL😜😜

Edit: I'm bad at reading and still unconfirmed if that box is even CA visual legal😅

wont pass visual, but no need to get the car re-tuned nor wiring changes to swap for smog check, so its still easier to change every 2 years.

[dHam_Slow.46M]

ha! funny that this thread just popped up. I am currently in the processing of reflashing my ECU to stock and uninstalling my Karb CSL box because I have to smog the car. I'm doing this myself so I can understand how to uninstall and install the box every two years. yay for noise booo for CA smog! I'm thinking if uninstalling this is a pain, I may just sell it and go with the Eventuri box. hahah

There's always the Karb OEM box + eventuri for a couples less than the CSL😜😜

Edit: I'm bad at reading and still unconfirmed if that box is even CA visual legal😅

[jpy1980]

ha! funny that this thread just popped up. I am currently in the processing of reflashing my ECU to stock and uninstalling my Karb CSL box because I have to smog the car. I'm doing this myself so I can understand how to uninstall and install the box every two years. yay for noise booo for CA smog! I'm thinking if uninstalling this is a pain, I may just sell it and go with the Eventuri box. hahah

[bavarian3]

Has anyone gotten away with leaving their Eventuri intake installed and passed smog?

swapping intakes is like oil change level difficulty. just swap em'.

[elrichmeister]

Has anyone gotten away with leaving their Eventuri intake installed and passed smog?

Wont pass visual, but should pass the OBD test.

[adr_M3]

Has anyone gotten away with leaving their Eventuri intake installed and passed smog?

[elrichmeister]

For California residents with the Eventuri Intake - Are you installing/uninstalling every two years to pass smog? I was thinking about pulling the trigger but the idea of taking it out and putting it back in to pass is giving me pause.

Planning to, my smog check is in a few months. The Eventuri intake is really easy to install, so not sweating it, should only take 15-30 min to do the swap.
To remove the filter for cleaning you have to practically take it apart anyways, so its good time to clean filter while you swap the intake.

[adr_M3]

For California residents with the Eventuri Intake - Are you installing/uninstalling every two years to pass smog? I was thinking about pulling the trigger but the idea of taking it out and putting it back in to pass is giving me pause.

[Teemmy]

I’m in the same boat in CA. Smog is such a pain! Cost is a high barrier to overcome with the carbon box and the alpha N tune 😭

[JDMaflac]

Nice, was this lip the 3d printed part that they sent out to owners after they got the original production run? You were supposed to glue it on right? Do you know if the newest iterations have this already installed from the factory?

Lastly, would this pass CA smog? I guess from a visual standpoint no, right?

Correct, my original production run box didn't have the additional lip but I noticed mine had a leak around the corners (smoke test). Karbonius was gracious enough to inspect my old one and sent me an entire new box WHICH had the lip already installed/epoxied on.

[jpy1980]

I personally did not have that issue with mine but the current version includes this lip for the clamp to hold down on. In terms of the Karb OEM box, its much more of a deeper bellow that starts at 3.5-4k rpm and is very prominent especially in 3rd and 4th gear. It does give IMO, the CSL "wurble" noise.

Nice, was this lip the 3d printed part that they sent out to owners after they got the original production run? You were supposed to glue it on right? Do you know if the newest iterations have this already installed from the factory?

Lastly, would this pass CA smog? I guess from a visual standpoint no, right?

[JDMaflac]

Nice!

A little off topic, but any issues with the Intake tube slipping off like it was reported on the M-Coupes? Is the intake very noticeable compared to the stock plenum?

I personally did not have that issue with mine but the current version includes this lip for the clamp to hold down on. In terms of the Karb OEM box, its much more of a deeper bellow that starts at 3.5-4k rpm and is very prominent especially in 3rd and 4th gear. It does give IMO, the CSL "wurble" noise.

[Nate047]

Interesting. I just read that a vehicle in SD is not required to have a smog check. Lucky you!

Mmmmm I don't think that's the full story. There are smog exempt counties in California but I feel like we would all "live" in San Diego if it were that easy.

Here's a list of counties where smog checks are not required. But the subject is hazy because no one wants to share too much online which TBH, is understandable.

https://en.wikipedia.org/wiki/California_Smog_Check_Program

[jpy1980]

Funny, the Eventuri sounds like my car (K&N) but maybe a *little* deeper. Interesting. I feel a rabbit hole coming. Of course I’m in a vert and I don’t have smog to deal with, so there’s that.

maw

You and I are in the same position! I have a vert with a KandN system but unfortunately I have to smog my car every two years.