induction

[aself66]

i am now an owner of a 2001 dc5 blue. it has a large bore exhaust already, i wanted to fit an induction kit, but am unsure as to which one is best suited. also is it best to get the ecu setup to take an induction kit into account? or is it a fit it and go mod? and finally should it include a heat shield? any help would be appreciated.

adam from Bath (not in it at the mo!) :!:

 

[DC51VTC]

You'll find plenty of posts on this subject m8. Two schools of thought: closed box/cold air. Personally I went for the former (with a GruppeM), not a cheap option but an immediate power hike of 9bhp at the hubs . Some others swear by the Injen or similar CAI while yet others are simply ramming air into their standard box (with or without Spoon filter) by modified grill. The one big no-no is a cone in the engine bay [-X - the bay gets too hot and the air is not dense enough to feed the vtec engine. This won't help you decide but will make you aware of the options available. :xhuh: :xwave:

 

[JT]

From what I've read from japanese hyper rev magazine. The stock box is already considered high flow box (but I think the filter element needs to be changed). The K20A engine is very sensitive to temperature so if you can have some kinda cold air feed into the stock box, that should do fine. The Japs claim that 1 degree reduction is about an increase of 1 pony. I don't know if there's any truth in that but hey, they did build the car.

 

[steveD]

wandering around the pits at Snetterton yesterday (Willhire 5 hour) seems most of the race boys (DC5 & Civics) run the standard box - even in one case attached to a £8K Mugen engine. They are not restricted by regs either so they're making a free choice.

Steve

 

[tailslide]

I am in the same predicament. Wanted to go with the open pod concept as I did with my old B series engine but I heard too many horror stories about power robbing hot air getting sucked in for the K series engine.

the earlier setup went well for me in the old B series engine, but I think I would want to get some kind of a "boxed up" setting for my induction in my new K series engine. I have narrowed down my choices to two.

a) GruppeM Ram Filter Charger
b) Mugen box (running stock bumper)

I know that a) is more costly, but I wanna hear from the experts which setup offers more bang for the buck, so to speak.

Any takers?

 

[cfoster]

i run an Injen cold air induction kit... (removal of nosecone etc to fit..). Although the noise of the thing is awesome, to be honest i havent really noticed an awful lot of difference...

Chris

 

[DC51VTC]

I am in the same predicament. Wanted to go with the open pod concept as I did with my old B series engine but I heard too many horror stories about power robbing hot air getting sucked in for the K series engine.

the earlier setup went well for me in the old B series engine, but I think I would want to get some kind of a "boxed up" setting for my induction in my new K series engine. I have narrowed down my choices to two.

a) GruppeM Ram Filter Charger
b) Mugen box (running stock bumper)

I know that a) is more costly, but I wanna hear from the experts which setup offers more bang for the buck, so to speak.

Any takers?

If you're staying with the stock bumper then definitely go for the GruppeM cos you haven't got the necessary rammed air without the Mugen front end. Personally I went for the GruppeM anyway (first in UK on a DC5) and still think it's one of the best 'straight-swap' mods you can do... but then I'm biased :roll: :wink:

 

[tailslide]

my thoughts exactly when i am looking at the mugen box. it would take some modification to the bumper (which i am trying to avoid) to really reap the benefits of the ram air effect that the mugen design seems to capitalize on.

DC51VTC, how much did you pay for your gruppem and which dealer did you go through?

 

[DC51VTC]

Hi tailslide,

I got a 'special' price from GruppeM Europe here in the UK simply because mine was to be the first here and allowed them entry to this specialised market. If you're in Asia I would consider comparing GruppeM Japan prices to those at TakaKaira - the latter seem to always hold up well and their service comes highly recommended (even to this country!)

Go for it mate - you won't regret it :twisted:

 

[jonster]

You could also use the 5Zigen ram-air behind the front grill to direct air to either the stock box (preferably with a Spoon drop-in) or the Mugen. Simon (T666YPR) has piccies of it somewhere on the forum.

I have the GruppeM which give great results but I was originally considering the Stock + Spoon Drop-in + 5Zigen.

Jon

 

[T666YPR]

Here's the links to the various posts:

5Zigen Carbon Air Intake:Gallery

5Zigen Carbon Air Intake:Results

 

[tailslide]

Hi tailslide,

I got a 'special' price from GruppeM Europe here in the UK simply because mine was to be the first here and allowed them entry to this specialised market. If you're in Asia I would consider comparing GruppeM Japan prices to those at TakaKaira - the latter seem to always hold up well and their service comes highly recommended (even to this country!)

Go for it mate - you won't regret it :twisted:

I'd like to but I'm convinced that none of the folks in GruppeM Japan understood english and I'm convinced that I don't understand japanese either. :lol:

Recommend any english speaking dealers who are willing to ship at a good price?

 

[tailslide]

Here's the links to the various posts:

5Zigen Carbon Air Intake:Gallery

5Zigen Carbon Air Intake:Results

:shock: u gained over 6 whps just from adding a ram air channel into a stock box??!!!

i was previously concerned about getting my source of fresh air from the front of the engine bay (as the case would be if i had decided on the mugen box) since it meant getting it from areas around the radiator and other engine paraphernalia, which comes with the associated loss of intake velocity and higher intake temps. but it would appear that the 5zigen intake got around this problem. :wink:

now, at £250, the 5zigen would be a steal. I'm just trying to weigh this option against blowing another £200 or so getting the gruppem.

jon and DC51VTC, how many hps did you guys gain from your gruppem?

 

[T666YPR]

Tailslide,

If you check back on my previous mods,you will find that before the 5Zigen intake,I'd fitted the Spoon throttle body and LOST 12 hp @ the hubs.I think the 5Zigen helped get some of them back.

Simon

P.S. The stock box has a Spoon drop in filter-you should see the gains that made.
I think the Spoon filter & 5Zigen will get you around the same gains as the Gruppe M but for less money

 

[DC51VTC]

Tailslide,

i) As mentioned earlier, try Taka Kaira (Can't remember off-hand if it's takakaira.jp co.jp or .com) - they do speak English and are well-respected in our little community for their efficiency, competitive pricing and speed of delivery.

ii) I gained 9hp at the hub, tested immediately before and after the straight swap on an otherwise unmodified car (For more details click HERE)- Jonster has a completely different setup (Hondata K-Pro, Mugen Twin Loop etc) and bought mine when I had to sell up but won't have any accurate figures because he doesn't test his mods

iii) You might do well to pm Chris DC5RK20A - he is an ex-pat American living in Okinawa and has the GruppeM amongst his many mods. iirc he imported his through GruppeM(USA) but not entirely sure.

Happy hunting

 

[tailslide]

Haha, you guys have been really helpful, but i think i'm a little more confused now. everyone wants the best and rite now, i really can't tell which is! :lol:

think i'll just start sending out e-mails to these people and see which dealer bags the deal first. maybe get the gruppem inlet scoop, connect it to a mugen box and fit a 5zigen intake to the inlet pipe? that oughta give a whole new meaning to the term "ram air effect" :wink: :roll:

 

[T666YPR]

Just in case you're not joking:
You can use the 5Zigen with the Mugen or standard airbox(air intake from front grill) but the Gruppe M works with it's own box(air intake from base of windscreen) :!:

 

[tailslide]

come to think of it, that would be possible after studying the design of the 2 systems. only thing is how tight you gonna fit the inlet of the mugen intake to that of the zigen inlet aperture.

say, is the zigen intake a bolt on or do you have to cut the OEM funnel off to fit the inlet aperture? juz took a look at mine and realized the OEM piping and funnel looks like they are joined in one piece. :?

 

[T666YPR]

The oem funnel comes straight out of the pipe after unbolting from the car.
Then the 5Zigen box is bolted in its place (the 5Zigen comes with a carbon plate to fit behind front grill to channel air to the carbon box)
The pipe from a Mugen box should fit straight on to the 5Zigen.

Franz (PS2 London) has the 5Zigen with a Mugen box

 

[Evs]

Sorry if I'm being thick here but what you seem to be saying is that the OEM and Mugen boxes are effectively interchangeable? What then is the advantage of the Mugen box in isolation (apart from extensive lightening the wallet)? Seems to me that the 5Zigen scoop, stock airbox with Hondata surgery and Spoon drop-in is a pretty much unbeatable vfm mod? :idea: