thanks for the update

 

Plus the variety pack has the cap you need for your oil overflow nipple when you install a catch can.

 

Touché

 

Well that was a nice and easy mod thanks for the help. I just had never seen a need to pay all that money when we already have a short shot intake that comes stock with a little modification

 

^ Yep, now just mate a Racing Beat Ram Duct to the stock box, drop in a K&N flat filter, and you're there.

See Brettus DIY

 

Sorry to barge in but I recently reinstalled my V-Fad and wanted to illustrate (show off) how I did it and why.

https://www.rx8club.com/series-i-tech-garage-22/350z-carbon-fiber-inlet-8-a-192959/

 

if the 04 AT GT doesnt have the VFAD but does have the FAD, can I remove the FAD?

 

You can... question is why would you want to (or feel the need to)?
Only reasoning I can think of is if you wanted to replace it with Racing Beat's air duct.

 

ok i got a k&n typhoon v2 from my uncle as a gift
i heard it sucks in the engine bay air
if i cap the "nipple" will this help me gain power
i just wanna cap the "nipple" behind the TB with no other work. Will this help

 

Ok I am a little confused....

I have a 2006 6sp MT. Does mine have the VFad system? or is it Fad?

I understand there is no benefit to removing the Fad system. only the Vfad...

 

You have a VFAD.

 

After removing the vfad today, (stock air box and drop in k&n) i got a CEL about 20 miles later. I can't remember the exact code but it was something like intake manifold tuning valve stuck open bank 1. i reset the code for now. I also capped off the vac line for the VAFD. Any ideas?

 

this mod looks tempting until I remembered that every car I've owned I've switched to an aftermarket intake--only to return to stock soon after.

 

removed mine this weekend and haven't seen any downsides, the only difference is that now, every time I open the throttle up and my revs are below 5k there is a very nice and deep growl that comes from the intake, its quite enjoyable. As for performance I can feel the engine is a bit more lively, specially upper in the rpm band but no solid data. Hopefully I'll be adding the revi ram ir duct soon.

 

So does a 04 manual gt have vfad? I currently and running into boost issues being my boost is at a very good constant till about 3000rpm and then the boost drops off and my power is drastically dropped, I've been trying to dyno it, but I keep only making 220 whp. I currently have the BNR Greddy turbo upgraded kit, any help would be awesome thanks. It kinda sounds like to me this could be the problem?

 

If you have a turbo you shouldn't have the air box correct? If there is no air box your vfad will not be connected to anything. And I'm assuming that you have a front mount intercooler and if that was installed most likely the vfad should have been removed.

 

I couldn't find a vacuum cap in my neighborhood pep boys.. will these from amazon do the job?
http://www.amazon.com/Spectre-4254-V.../dp/B000BPWSCC

 

I know Autozone sells a variety pack with the correct size... just get it there.

 

If not those are the exact ones autozone sells, they were 6.99 or 7.99 at autozone I think.

 

noobish question. but if i remove my VFAD will it trigger a cel?

 

No, the VFAD is only connected to the engine with a vacuum hose. Be sure to plug the hose once it is removed.

 

I decided to go back to using the VFAD. I never actually disconnected it completely, I just removed one hose so it was always stuck open like this or another thread suggested. Recently I was getting some idle issues where my idle would dive down to 600-700 rpm and then jump up to 1200-1500 quickly. I thought maybe its time to change my coils out(was at almost 36k miles) I did that and idle issue went away for about a week but then came back the exact same.

Then I thought the only thing left to check is the VFAD since that is the only thing modified in the engine bay. I removed my vacuum cap on the TB and re attached the VFAD hose and now its been weeks and no idle issues at all. Maybe it was because I did not fully remove the VFAD, I don't know. I don't know enough about the VFAD or why mazda put it there to start second guessing them, and it was obviously causing me trouble with it set to always open so its back to stock forever for that part.

 

i thought you could just get rid of VFAD with Cobb, right?

 

do we leave the styro foam and the nose support off or put it back on? thanks.

 

Take the time to read the whole thread.
Then you'll see that its not worth it to remove the duct and the VFAD can simply be bypassed if that is what you desire.
And when I say bypass... I'm simply saying you can prevent the valve from closing to keep it open at all times.
Keep in mind, the valve is closed at lower RPMs simply to keep the engine noise down.
Bypassing the valve will only increase the sound coming from the intake... nothing more.