Jump to content
SAU Community

Recommended Posts

Anyone bought one of these Apexi pod filter kits that bolt on to the AFM and have a direct dyno comparisson to before and after, with nothing else changed other than the removal of the oe airbox and the fitting of the kit?

I'm considering buying one, but I'm not sure if it's worth it. Keen to hear of anyone's results.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/
Share on other sites

  • Replies 65
  • Created
  • Last Reply

Top Posters In This Topic

Without a heatshield, it will cost you a tiny bit of power, with a proper heatshield and CAI it will make around the same amount of power as the airbox. The pod will make for a lot more induction noise than the airbox as well, up to you if you want that or not.

Check these vids out if you have a bit of spare time

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6363349
Share on other sites

Mate there are many differing opinions, however if you put a pod filter on, the air intake capacity increases. You will see no gain by simply changing from standard intake to a pod. You need to improve airflow capacity from intake through to exhaust. Meaning if you have a larger exhaust from the turbo back then a pod filter will certainly help. The stanadard airbox alone is restricting air flow.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6363739
Share on other sites

Mate there are many differing opinions, however if you put a pod filter on, the air intake capacity increases. You will see no gain by simply changing from standard intake to a pod. You need to improve airflow capacity from intake through to exhaust. Meaning if you have a larger exhaust from the turbo back then a pod filter will certainly help. The stanadard airbox alone is restricting air flow.

How will it increase airflow, by sucking hot air? Not filtering dust out? Pods usually have less surface area than the stock panel filter.

My opinions are based on experience. Stock airbox/cai ftw.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6363753
Share on other sites

Mate there are many differing opinions, however if you put a pod filter on, the air intake capacity increases. You will see no gain by simply changing from standard intake to a pod. You need to improve airflow capacity from intake through to exhaust. Meaning if you have a larger exhaust from the turbo back then a pod filter will certainly help. The stanadard airbox alone is restricting air flow.

An old argument but do you have evidence for this? I am sure there is a point at which the stock airbox will become a restriction but I suspect it is somewhere way past 300kw.
Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6363789
Share on other sites

I agree Bob, I guess it will flow well over 350, I know mine can and it uses the same panel filter. Save your coin for a good alloy intake and bellmouth dump/good exhaust. The tuner will take care of the rest.

If you want more power than that you would have to look at a twin pod setup and cai like this one I made for a mate's supra, it just put down 550kw last night.

post-63525-0-21149600-1337526498_thumb.jpg

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6363807
Share on other sites

CES racing have proved this with substantial evidence... Its interesting how these videos of proof by mighty car mods are hardly mighty mods. They use an R34 with pod then restricted air flow from the turbo to the cat to a cat back exhaust, that right there is pure wank factor to replace an exhaust from the cat back and leave the other half chocking your airflow. Then in the other video its the blue turd, this car is running a standard exhaust of course there will be no increase in power...

Hardly proves anything... The surface area of a panel filter may be greater than a pod but the shape of a pod causes a greater turbulence thus increasing the flow... The standard airbox was designed to restrict airflow to minimise the sound levels.

Why dont you just say that a larger exhaust will do nothing as well... If you believe that the exhaust being larger will increase power it only makes sense that an unrestricted air intake will help with the flow of air...

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364072
Share on other sites

CES racing have proved this with substantial evidence... Its interesting how these videos of proof by mighty car mods are hardly mighty mods. They use an R34 with pod then restricted air flow from the turbo to the cat to a cat back exhaust, that right there is pure wank factor to replace an exhaust from the cat back and leave the other half chocking your airflow. Then in the other video its the blue turd, this car is running a standard exhaust of course there will be no increase in power...

Hardly proves anything... The surface area of a panel filter may be greater than a pod but the shape of a pod causes a greater turbulence thus increasing the flow... The standard airbox was designed to restrict airflow to minimise the sound levels.

Why dont you just say that a larger exhaust will do nothing as well... If you believe that the exhaust being larger will increase power it only makes sense that an unrestricted air intake will help with the flow of air...

Its true the above videos are not that scientific but they do represent what a lot of first time (especially Skyline) owners do - get a pod filter and a catback exhaust - closely followed by a noisy aftermarket bov.

Its not a matter of belief... its measurement that counts. There is plenty of research to show the optimum size of exhaust pipe required for different power levels. Similarly the size of air intake is important too and the restriction provided by the air filter ( I am assuming you do not advocate running with no airfilter on a street car) is minimal and the measured difference between pod and stock airfilters is even more minimal. The stock airbox and snorkel also has a small ram effect which helps with flow.

Do you have any evidence to support your assertion that "the shape of a pod causes a greater turbulence thus increasing airflow" (actually that's two assertions)?

When you are running a huge turbo that requires a 100mm or bigger intake then it can become impractical to use the stock airbox and you will need another form of cold air supply.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364241
Share on other sites

The airbox is unrestricted, its the intake that thins down to 40mm and requires upgrading. (not with the stock turbo though.) As Bob said, when you decide to build the engine, run a 3.5 inch exhaust with no cat and run a 600hp turbo, then you will need to look at the airbox being a restriction.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364607
Share on other sites

CES racing have proved this with substantial evidence... Its interesting how these videos of proof by mighty car mods are hardly mighty mods. They use an R34 with pod then restricted air flow from the turbo to the cat to a cat back exhaust, that right there is pure wank factor to replace an exhaust from the cat back and leave the other half chocking your airflow. Then in the other video its the blue turd, this car is running a standard exhaust of course there will be no increase in power...

Hardly proves anything... The surface area of a panel filter may be greater than a pod but the shape of a pod causes a greater turbulence thus increasing the flow... The standard airbox was designed to restrict airflow to minimise the sound levels.

Why dont you just say that a larger exhaust will do nothing as well... If you believe that the exhaust being larger will increase power it only makes sense that an unrestricted air intake will help with the flow of air...

turbulent air actually has higher resistance compared to laminar flow, plus you run the risk of getting an uneven air flow over the maf

know much about reynolds numbers?

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364610
Share on other sites

Im sure my TO4Z dragging in air at 24lb would be creating a bit more turbulance than a little bit of wire in a POD, a POD is only a advantage if it has a heat shield and CAI on motors that need more unrestricted air flow, try doing a hydrometer test on the intake pipe to see any difference.

Results cannot be taken on the dyno, results need to be done whislt the car has the bonnet down on the road/track, if you want a accurate result do a hydrometer test, otherwise you are just pissing in the wind.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364633
Share on other sites

Results cannot be taken on the dyno, results need to be done whislt the car has the bonnet down on the road/track

Why?

Close the bonnet and let the dyno fan run. The Mainline fan blows air at the car at 100km/h, which is exactly what you'd see on the road/track whilst driving at 100km/h; I dont see how its different.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364642
Share on other sites

I have a HKS Mushroom Pod. I don't have a lot of choice regarding the room I have - the cooler piping runs right through the place where the stock box sat.

I also made sure that I have a large amount of fresh air feeding it- up from the fnt bar. I don't really understand the HKS specific pod bashing. There may have been ones that fell apart after X years. Thats really not a good thing. But they do have a 3 layer filtration foam, its not just that coarse layer you see from the outside, which wouldn't filter well at all. Same quality as a panel? Probably not, but its not as hopeless as people make out.

As for temps- on the freeway / moving I've been seeing 22-25 degrees measured basically at the throttle body. My AFM is after the filter/turbo/intercooler. I'd say thats pretty acceptable, and its not sucking in hot air.

However, If I had a choice, it'd be to keep the stock airbox/panel. Getting a pod for the sake of it, just not worth it.

Link to comment
https://www.sau.com.au/forums/topic/400611-pod-filter-kit/#findComment-6364883
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • My thinking is that if the O2 sensor is shot then your entire above described experience is pure placebo.
    • Here is the mess that I made. That filler there was successful in filling dents in that area. But in the middle area. I can feel dents. And I've gone ocer it multiple times with filler. And the filler is no longer there because i accidently sanded it away. I've chased my tail on this job but this is something else lol. So I'm gonna attempt filler one more time and if it doesn't work I'll just high fill primer the door and see where the issues are because guidecoat is of no use atm.
    • Ok, so I think I sort of figured out where I went wrong. So I definitely overthinked it, and I over sanded, which is probably a large part of the problem. to fix it, I ended up tapping some spots that were likely to be high, made them low, filled them in, and I tackled small sections at a time, and it feels a lot better.    I think what confused me as well is you have the bare metal, and some spots darker and some are lighter, and when I run my finger across it, it' would feel like it's a low spot, but I think it's just a transition in different texture from metal to body filler.    When your finger's sliding on the body filler, and crosses over to the bare metal, going back and forth, it feels like it's a low spot. So I kept putting filler there and sanding, but I think it was just a transition in texture, nothing to do with the low or high spot. But the panel's feels a lot better, and I'm just going to end up priming it, and then I'll block it after with guide coat.   Ended up wasting just about all of my filler on this damn door lol  
    • -10 is plenty for running to an oil cooler. When you look at oil feeds, like power steering feeds, they're much smaller, and then just a larger hose size to move volume in less pressure. No need for -12. Even on the race cars, like Duncans, and endurance cars, most of them are all running -10 and everything works perfectly fine, temps are under control, and there's no restrictions.
    • Update: O2 sensor in my downpipe turned out to be faulty when I plugged in to the Haltech software. Was getting a "open circuit" warning. Tons of carbon buildup on it, probably from when I was running rich for a while before getting it corrected. Replaced with new unit and test drove again. The shuffle still happens, albeit far less now. I am not able to replicate it as reliably and it no longer happens at the same RPM levels as before. The only time I was able to hear it was in 5th going uphill and another time in 5th where there was no noticeable incline but applying more throttle first sped it up and then cleared it. Then once in 4th when I slightly lifted the throttle going over a bump but cleared right after. My understanding is that with the O2 sensor out, the ECU relies entirely on the MAP tune and isn't able to make its small adjustments based on the sensors reading. All in all, a big improvement, though not the silver bullet. Will try validating the actuators are set up correctly, and potentially setting up shop time to tune the boost controller on closed loop rather than the open loop it is set to now. Think if it's set up on closed loop to take the O2 reading, that should deal with these last bits. Will try to update again as I go. 
×
×
  • Create New...