are you comin ?Originally Posted by VR457
Mitsubushi Legnum Super VR4 # 59/283
Remapped ECU
Blitz dual selenoid Electonic Boost Controller
600X300X76 FMIC
Magnecor KV85 competition HT Leads
NGK Iridium spark plugs
Custom made hard pipes
S-ayc diff
Selby ajustable sway bars
Poly utherain bushes
Sard 265lph fuel pump
Sard fuel pressure regulator
Daiyama adjustable coilovers
236mm 13 row transmisson oil cooler
Custom made rear strut-brace
plx wideband sensor & gauge
Evo VI 3" Decat
Enkei Evo VIII alloys
Evo VIIII brembro calipers & discs all round
Zenon HID headlights inc high beam and fog lights
Carputer
2x genesis amp's
Rainbow and focal door speakers
AMSoil fluids
K&N panel filter
Opie oils air freshener
Will try my best. Need to know my AFR's. Blown bank account not helping anything at the mo. Dont play lottery neither!
i would just buy your self a pannel filter i put a hks mushroom filter on mine and i lost loads of power and the fuel cost went up as well
hope ya can make it J it will defo be a good day
Why is the factory airbox a compromised design?
The air inlet of the factory airbox is in a high pressure zone and the intake area is larger (by a significant amount) than the MAF intake.
I have had no trouble with the standard airbox up to just shy of 200KW at the wheels (standard ECU, no tuning, piggy back etc). I have NEVER seen a car with a pod filter arrangement get close to that figure while still using the standard MAF, the most I have seen is just shy of 170KW.
Our dyno days are done with the hood lifted and a HUGE fan feeding air towards the car. The intake temp is going to be negligible, at least as much as driving will.
When someone can show me a pod arrangement that, on a car which has no compensation (i.e. tuning, piggy back, no maf etc) and can exceed 200KW at the wheels, ill agree that you can do as well with a pod.
Good luck!
Easy enough to answer - you need a PC fan and a lit cigarette. Try it and see what I mean! It's designed to be a resonant chamber - I'd imagine to surpress induction noise. As such, it stagnates massively at lower flow rates.
So whilst it's not affecting peak power one bit, it's definitely not helping throttle response and spool. I'd be the first to accept that these aren't a "big deal" however they do seriously affect driveability. That "boggy" feeling you get with a pod filter in the engine bay when in traffic is a similar analogy.
Which takes us back to where we started
I disagree with the theory on resonance sorry. (unless you use a different word for the same thing as I am thinking, which has happened before... lol)
I would say it is more to do with creating a slower moving mass of air so that the MAF gets a stable vacuum to draw upon, which in turn ensures the correct reading.
The GDI I had used a resonant chamber, it was pretty funny without it actually.
Ok, so I have a PC fan and a lit cigarette... what then?
I'm out of this thread too as I've been given a warning with two points for saying that pod filters are bad, even though I'm the only one in the thread to make specific mention of a thread (thanks wodj for finding the link) where there is proof. It sounds like swinks is on track to test and find out the difference as well. I can't wait to see the results. Thank god someone else is actually doing testing rather than just being a keyboard warrior that doesn't know what they are talking about, or just 'thinks' they know something.
To the rest of you running pods or refusing to listen, go and run your pods. I don't give a crap. Enjoy your wasted fuel and less power.
Sure one of you may be lucky enough to engineer a solution that will nearly as good as stock, but most people won't be anywhere near lucky enough.
Candee makes specific mention of the results here http://www.clubvr4.com/forum/showthr...&highlight=pod I can't find the graph though.
Last edited by bradc; 11-06-2010 at 08:37 AM.
If I'm replying to your thread and helping you out, it is because I like you and want to help out your VR-4 ownership. No other reason
Brad, you may not believe this but, well said...
I agree with your sentiments
If you want to have a pod/mushroom filter, whatever, have one
If you like it, good for you
Experience of owners shows not so good for the std VR-4
This is like AMSOIL, take the advice, don't take the advice
It's up to you...
No Brad you have not been given two points for saying that pod filters are bad , it's the way you said it !!!
Yep, because no one would listen to me. As I said above, people can run pod filters, I don't give a sh1t anymore.
I give up.
Last edited by Turbo_Steve; 12-06-2010 at 12:16 AM.
Sure whatever.
Show me a dyno with a pod where it performs better than the stock setup with no other mods (ie fuel control or ecu tuned around it)
I've listed an example on a dyno and you just want to talk about all of these theoretical reasons about how it may be possible to make something better. So go on then, do it yourself and show me the dyno results.
Contrary to popular belief ! I don't resemble the last 6 words in the above paragragph !!
Otherwise i would have killed more engines than the actual "Zero" that i haven't!!
Brad genuine question mate how many results have you seen that are bad on a dyno or 1/4 mile, not that just felt bad.
I know alot of people say things feel this or feel worse etc...when i put a 3" exhaust on my car with the RPW downpipes the car felt slower...but it knocked 2 tenths of the 1/4 mile time and that was consistently and with a *cough* pod filter...
So yeah not picking just wondering how many?
There have been a few people on ozvr4 and Jeremy's one on here. I know it isn't a massive number but I still haven't seen a single dyno result with a pod and with stock where the pod makes more power.
Nah thats cool mate....but i know were looking at stock car with standard airbox, vs stock car with pod..
But isnt it more relevant to compare with a modded car? I.e when more air flow is required?
yes and no. The problem with a pod is that it changes the shape of the air so that the small part of the maf that air is actually measured through is receiving a different amount of air compared to the rest of the maf. This shape isn't going to be changed in principle from 260 to 300hp at all, if anything if the shape is wrong then things will only get worse as horsepower is increased as the stock ecu does go to richer settings when it thinks more air is going through.
So were not really arguing wether pod filters are crap or not more how can the air be stablised before it hits the MAF without using the standard air box?
POD ON MAF = ****E i agree all day, but i think possibly where people have the pod maybe in the wing where the inlet pipe can fill with air well before hitting the MAF therefore being stable and dense may work...or a variant of that.
Anyway only real way to know as everyone agrees is on a rolling road.
My argument is still Air Density
Posting Permissions
Reply With Quote