MattMe Posted March 9, 2010 Share Posted March 9, 2010 Hey all, just thought I'd share my recent small mod on my 2004 UK GT after getting hold of a UK 2007 standard airbox. It turns out, as far as I can see anyway, that the actual airboxes are exactly the same. The only difference being the metal (venturi?) ring to the back of the box, where the induction pipe with MAF sits... I've attached pics to illustrate. Not noticed any difference to be fair, but for £40 thought I'd do it so when I get it tuned later in the year I can make the most of it. Boxes side by side: 2004 'metal ring': 2007 'metal ring' (notice more pronounced shape): Just thought I'd share Quote Link to comment Share on other sites More sharing options...
andlid Posted March 9, 2010 Share Posted March 9, 2010 the 06 box looks a bit bigger though is that correct statement? the metal ring is where you connect the intake pipe I take it? Hmm would be nice to see a dyno comparison between the two! thanks for sharing, Quote Link to comment Share on other sites More sharing options...
rtbiscuit Posted March 9, 2010 Share Posted March 9, 2010 my new apexi filter has that as well, and its going to be inside the typhoon air box fiddy runs a similiar setup CAI wise but he runs the JWT filter instead for the same reason Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted March 10, 2010 Share Posted March 10, 2010 O6 airbox is worth 4/5 bhp over a stock early box even better with a remap, gets cold air all the time far far better than under bonnet air filter kit made. Long tubs kits we find the Ignen the best , the AEM doesn,t seem to work as well. Mark Quote Link to comment Share on other sites More sharing options...
narcotix Posted March 10, 2010 Share Posted March 10, 2010 I take it the later airboxes are just a direct swap for the earlier ones? I might have to keep an eye out for one then ... Quote Link to comment Share on other sites More sharing options...
MattMe Posted March 10, 2010 Author Share Posted March 10, 2010 Yep direct swap - took me ten mintues and I have fingers made of plastecine sasuages covered in mustard. 10mm spanner/socket is all that is needed. The newer box looks bigger in the picture but it's not. It's EXACTLY the same, apart from the metal ring... The metal ring as the photos were taken are looking into the engine, not the intake from behind the front bumper. You know what I mean. Don't you? I heard there's a 4-5bhp without remap and upto 10bhp on a remap with no other mods Dunno how true it is but I'm sure someone (Abbey??) posted up some stuff about it a while ago. Quote Link to comment Share on other sites More sharing options...
yokomo Posted March 10, 2010 Share Posted March 10, 2010 now all you need is one of these .. http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... K:MEWNX:IT , going to make a small carbon/fiberglass fitting to seal it to the box Quote Link to comment Share on other sites More sharing options...
MattMe Posted March 10, 2010 Author Share Posted March 10, 2010 Seriously, don't temp me to but any more mods... I assume you're linking about some way to get more/colder air into the airbox I fitted? Good plan. I have questions/comments. where do you plan to mount the intake of this pipe? Why are you spending £25 on it? Any old stuff will do, surely? I know it's good in theory but do you think the airbox intake is starved of air where it is? (This coming from someone who fitted a whole new airbox for appoximately no benefit other than making me feel better!) Just my thoughts. I have talked with my brother about similar mods in the past. I'm tempted now... Quote Link to comment Share on other sites More sharing options...
MattG Posted March 11, 2010 Share Posted March 11, 2010 I fitted the Post 06 airbox to my car back in Jan and got 7bhp and a bit of extra torque. As you say the only difference is the larger velocity stack on the later model airbox. A good cheap mod! Quote Link to comment Share on other sites More sharing options...
yokomo Posted March 11, 2010 Share Posted March 11, 2010 im going to be making a sealed adaptor to fit the trumpets on that pipe (which is basically why its not alot cheaper) then run the pipe down to the front grille like the typhoon does. that way te air will be sucked or rather forced dricetly in from the the outside as it stands your relying on the air floating up to the airbox , im going to be giving it a direct path with a bigger inlet than the tube thats pointing the same way as the car moves. so in theroy ( probably wont do squat but should look nice) as the car moves the air will get sqeezed up the tube to the intake buts that just theory wont find out for sure till i can get it mapped. if it works great if not well £25 is hardly anything to worry about for an experiment. Quote Link to comment Share on other sites More sharing options...
H5 Posted March 11, 2010 Share Posted March 11, 2010 Interesting, must have a bit to do with the performance difference. Quote Link to comment Share on other sites More sharing options...
Mark@Abbey m/s Posted March 11, 2010 Share Posted March 11, 2010 im going to be making a sealed adaptor to fit the trumpets on that pipe (which is basically why its not alot cheaper) then run the pipe down to the front grille like the typhoon does. that way te air will be sucked or rather forced dricetly in from the the outside as it stands your relying on the air floating up to the airbox , im going to be giving it a direct path with a bigger inlet than the tube thats pointing the same way as the car moves. so in theroy ( probably wont do squat but should look nice) as the car moves the air will get sqeezed up the tube to the intake buts that just theory wont find out for sure till i can get it mapped. if it works great if not well £25 is hardly anything to worry about for an experiment. why bother stock airbox is sealed to the front panel , picks up nice clean cold air. Fit a 06 airbox carbon panel in bumper works the best. Dont pick up up from a low place real easy to suck water in then. Mark Quote Link to comment Share on other sites More sharing options...
yokomo Posted March 11, 2010 Share Posted March 11, 2010 im going to be making a sealed adaptor to fit the trumpets on that pipe (which is basically why its not alot cheaper) then run the pipe down to the front grille like the typhoon does. that way te air will be sucked or rather forced dricetly in from the the outside as it stands your relying on the air floating up to the airbox , im going to be giving it a direct path with a bigger inlet than the tube thats pointing the same way as the car moves. so in theroy ( probably wont do squat but should look nice) as the car moves the air will get sqeezed up the tube to the intake buts that just theory wont find out for sure till i can get it mapped. if it works great if not well £25 is hardly anything to worry about for an experiment. why bother stock airbox is sealed to the front panel , picks up nice clean cold air. Fit a 06 airbox carbon panel in bumper works the best. Dont pick up up from a low place real easy to suck water in then. Mark agreed the carbon duct is the bst im not gonna cut my bumper ! the feed will run to wher those black planels in the grill are so unless im going through over a foot of water its not going to get submerged so the only potential water ingress is rain but since the pipe will havr vertail sections gravity should be enough. either way nothing ventured nothing gained , anyone got an 06 box they dont need ? Quote Link to comment Share on other sites More sharing options...
yokomo Posted March 11, 2010 Share Posted March 11, 2010 kind of a home made one of these ....http://www.evo-r.net/product/CAI/tube/index.htm but mark siad version 2 is probably better if you dont mind cutting your bumper, straight direct feed ! Quote Link to comment Share on other sites More sharing options...
andlid Posted March 11, 2010 Share Posted March 11, 2010 I'm so amazed at this, am I the only one that can't understand that the ONLY difference between the pre 06 box and the 06+ box is the below 'funel' looking item? And it gives gains of 10hp when tuned (up to even 4-5hp is amazing!) Could I get just the ring and see these increases?! I'm just so baffled about the whole thing! Imagine me posting a post saying that a change in the ring on the intake airbox will give you 4-5 hp and it will cost you a tenner?! I'd be laughed out of it. So confused that the standard (STANDARD) airbox is the best one! That none of the other companies out there has been able to better themselves and see similar gains etc. Well I think I've just decided to keep my old box and makeup the addtional piece (somehow) and then replace the intake tubing to something longer (heard it increase torq) Can someone explain WHY it increases the HP? Goodnight.... Quote Link to comment Share on other sites More sharing options...
narcotix Posted March 11, 2010 Share Posted March 11, 2010 There was another thread on this subject not so long ago ... viewtopic.php?f=25&t=32564&start=0 I think I'm probably going to get myself one soon Quote Link to comment Share on other sites More sharing options...
yokomo Posted March 11, 2010 Share Posted March 11, 2010 only difference is the velocity stack (the funnel) smoothes out the airflow and stops it from getting all mixed up. afaik the perfect intake is justa tube that runs from the Tb straight out to clean air wihth maybe a some funneling , since that would be kinda open to debris water etc etc 06+ box plus the bumper duct is about as close as youl get. however aftermaket intakes sound better and look cool so people use them instead , me im just cheap/skint and have some time and so fancy having a go at ducting the stock setup with cutting (to chicken to risk the resale wiht a chopped bumper) Quote Link to comment Share on other sites More sharing options...
andlid Posted March 12, 2010 Share Posted March 12, 2010 Why= the funnel creates a better airflow through the intake tubing to the TB. (Going to get a funnel ring from / to a baswoofer!) I'm still so amazed! A Quote Link to comment Share on other sites More sharing options...
narcotix Posted March 12, 2010 Share Posted March 12, 2010 Andlid, Let me know how that goes for you ... It seems like a cheaper / quicker option to buying a post 06 airbox .. Quote Link to comment Share on other sites More sharing options...
IanS16 Posted March 12, 2010 Share Posted March 12, 2010 I'm looking into replicating the 06 Venturi ring as we speak, I should have something to show for it next week Just depends on manufacturing costs Quote Link to comment Share on other sites More sharing options...
andlid Posted March 12, 2010 Share Posted March 12, 2010 I'm looking into replicating the 06 Venturi ring as we speak, I should have something to show for it next week Just depends on manufacturing costs do share when you have something ... then we just need to do a pre and post dyno! Quote Link to comment Share on other sites More sharing options...
MattMe Posted March 13, 2010 Author Share Posted March 13, 2010 That's exactl why I posted it - I was amazed that the shape of the ring makes all that difference. It it does make that much difference then I'd definitely recommend just changing that rather than the whole airbox it would be much cheaper. As for why other companies haven't made anything better yet I think there are two reasons. One being that Nissan designed the engine and spent a fair few quid on it. Maybe even more than £4.50, some say. The second being that the stock air box creates a 'resevouir' of air behind the filter allowing the car to get the air instantly when you put your foot down, without having to slowly draw it through the filter. That and the box will be designed to make the best possible flow of air - hence why small changes like the ring make all the difference. Most after market CAI are purely for the noise, which is fine if that's what you're after. I'm not sure what the top-end CAI kits (like the sealed box Typhoon) are like in comparrison to the standard airbox. But I still find it hard to beleive that few mm and a slight change in shape can gain people more torque and BHP. But I do like it! Quote Link to comment Share on other sites More sharing options...
narcotix Posted March 13, 2010 Share Posted March 13, 2010 So have you fitted your new airbox to your zed yet? If so, have you noticed any differences in the drive / performance? Quote Link to comment Share on other sites More sharing options...
MattMe Posted March 13, 2010 Author Share Posted March 13, 2010 I can't say I've noticed any difference whatsoever on mine, but a dyno might prove otherwise. Suppose 5bhp is about 1.5% in power - not much really... Quote Link to comment Share on other sites More sharing options...
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