GrimmSpeed Post MAF Hose
 

Didn't see anything on this yet so I thought I'd post it. What are your thoughts on this? I'm used to cars where doing any sort of intake work is a net positive (if not for power for induction howl and throttle response), but I understand that the twins aren't necessarily like that, and that the stock intake is pretty well optimised already.

For the BRZ, two of my largest complaints are the lackadaisical throttle response low down, and how quiet the intake is, but I can't really see how this hose would make the intake any louder under load.

https://www.grimmspeed.com/grimmspee...brz-toyota-86/

https://cdn11.bigcommerce.com/s-8fmm...489903.jpg?c=2

I've got mine on. There aren't many parts out yet, so I was happy about this one. I had one on my first gen as well. Does it drastically improve performance? No, but I imagine there is a small gain compared to the jagged factory tube. Plus, it does clean up the bay a bit.

https://lh3.googleusercontent.com/OF...-no?authuser=0

I have it on mine now too, it's hard to tell if it's anything more than extra induction noise. In my internet opinion, lol, I do believe there has been some improvement.

Noticeable extra induction noise? Intriguing.

If this is true then I would definitely consider getting one. The car is criminally quiet but I also don't mind the stealth exhaust, some intake noise would be nice.

Yup definitely worth it IMHO. Ditch that charcoal filter, get a dryflow washable filter, and slip on a grimspeed intake tube.

Is it louder because it lacks the extra module that hangs below the stock tube? What looks to me like an external resonator maybe...

https://cdn11.bigcommerce.com/s-8fmm...489916.jpg?c=2

Just installed the grimspeed intake tube, k&n filter, and deleted the charcoal filter. Didn't notice any extra induction noise.

What I want to do next is get rid of the resonator to the left of the intake box. So far only Apex'i has the carbon snorkel which deletes the resonator but it's a bit steep. Anyone have any other options they know of?

more than likely yes. that box is a resonator.

i plan on making a resonator plug to delete the box.

i have a 3d printed prototype sitting in front of me right now that ill be installing today for test fitting purposes.

that box is less a resonator and acts more like a plenum, keeping air readily available for when it's needed.

i do remember someone blocking it off on one of the facebook pages and mentioning it didnt make a noticeable difference in sound

the best way to get any sound is to have an open air filter.. but that comes with a list of cons as well.

well thanks for saving me $1200...

if you have a link to those facebook posts showing the box delete, id appreciate it.

Guess ill just wait for the HKS Racing Suction Intake to come out.

It was a few months ago but I’ll see if I can Find it

Iirc he made his block off plate with some polycarbonate sheet and epoxy

Because of the location, it doesn’t have to be completely sealed, cause it’s pre-MAF and pre-filter

You can technically drill that rivet out and remove it if you want without any harm being done

Perrin is supposed to be releasing theirs as well, soon. That one has internal, parallel reinforcing wires, front to back. Can't find the post that had the pictures, though.

Not invalidating your experience by any means -

I just got mine installed and have a noticeably more aggressive sound from 3500 RPM’s and up, plus some classic cold air intake whoosh sounds on throttle tip in at idle.

Don’t expect this really makes much power (if any), but definitely adds a little fun factor for me.


Sent from my iPhone using Tapatalk

It def adds some noise and I could hear that with the Perrin exhaust (granted not super loud). I'd imagine it's more pronounced with stock exhaust for obvious reasons. Didnt notice anything else though

Did you just do the tube, or the full tube/filter/coal removal?

No filter, but I did pull out the charcoal filter


Sent from my iPhone using Tapatalk

Is that reversible on these cars? Or is the charcoal filter pinned in place?

It’s permanently fixed by a plastic weld or an epoxy, can’t remember exactly what but it’s not going back in. Surprisingly restrictive, won’t miss it a bit.


Sent from my iPhone using Tapatalk

I'm skeptical when a company says "improves performance," but can't produce objective data to show that improved performance.

It does look cool, but not $1200 cool.

For intake sound you need to modify the intake snorkel behind front bumper, at leats in the 1º gen.

Got the post-MAF hose and a K&N filter installed (birthday present from my better half!) and I like it. I do think there is a little more front end noise under load. I don't think its a placebo, but even if it is, I'm happy with it. Worth it in my view. Left the charcoal filter in for now.

I really wanted to go with the red version, but I thought it might look a bit garish in the engine bay with everything else being black.

exactly why I did black as well