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warrmr wrote:sory my last post was a tad misleading.
the thing abotu running with no airbox filter was just to prove a point to the guy who said that to much air will **** the engine.
as the 2 guys said above me you do need a filter as if dust dirt and grit get into the cylinders they will cause havoc with the engine and you will slowly loose compressian as the cylinders get scored.
yes mod the existing airbox like i mentined in teh above post.
loose the Air thermostat in the intake tube.
grind and smooth the internals of the airbox.
route the engine breather to a catch tank.
fill and seal the hole for the breather.
A, ok, now I understand what u mean, and completely support you on this one
fianlly got around to playing with the induction kit, can any1 tell me if this will work and is all ok etc? Ive got a bit of hose coming straight from the lower grille onto the induction kit, but im not sure what to do with the existing cold air inlet, also any1 got any suggestions to secure the filter in place? everything pictured is for the purpose of the photo, nothing is held in place yet.
Sorry for my rudeness and harsh looking comment, but to put it short, what you've created is the worst piece of engine work I've ever seen.
First of all that's the dumbest place for your airfilter, since it's located almost on top of your exhaustmanifold, which is the hottest part in your enginebay. your filter will now suck in the hottest air available (the cold hose isn't gonna do much work in that spot).
Second, the way you fitted the filter to your original airbox doesn't look very solid. If there is just the tiniest hole in it, the engine will start sucking in air through that hole, which is un-filtered air.
Also your filter is just lying there, you really have to mount the filter somewhere (keep in mind that your engine "rocks" or "tilts" a bit while stepping on and letting go of the gas).
And you can easily remove those pieces of piping from your old system, since they're of no use at all right now.
Personally I would remove all piping, including your new filter, and re-place the filter on the spot left to your engine, next to your engine-mount/timing-belt-cover. Here the ait is a lot colder, and you have more space to decently mount the filter (preferrably to the engine mount, since this will rock/tilt along with the engine). Then make sure to put the cold air pipe as close as possible to the filter (not on it, but close to it) and as far away as possible from the exhaustmanifold.
but I've got a close cold air system, which means it doesn't suck the air it needs from under the hood, but from outside the grill, where the air isn't heated by the exhaustmanifold or engine etc. and colder air means more oxigen-particals per CC, which results in better performance
this pic is courosey of Mouse GTI.. but the engine layout is simmilar to the mk4 16v
as you can see he has used the existing induction intake from inside the wing behind the indicator and removed the thermostat from the induction line (that gold thing inside the oem tube)
and mounted the new filtered airbox on the TB directly.
now if you can engeneer a similar design thinking about airflow and speed of flow then you will be onto a winner.
the CDA airbox works abit like a muffler on an exhaust in the way air flows through it IE high pressure to low pressure.
lol from this day forward i am never touching an engine again! lol i'll stick to speakers and electics i think. Played around with the induction kit for afew hours yesterday, and have now given up! Its all back to standard. Tried it firstly sitting directly on the cold air intake where the old airbox sat. Sounded very nice, but for some reason caused the car to judder a fair bit when accelerating, and im sure it made it slower. Then tried connecting it to the end of the old airbox with the old filter removed. Did nothing, didnt even make a noise. Tried various other places and failed. Anyone wanna buy a new induction kit?
Not me though. Im retarded. We should all know this by now lol.
But....
If i were you. Take the old piping out. It unscrews (or snaps if your me) off from the bottom and is held in place with a small engine mount like thing. Its rbbery and funked. Id make some kind off braket using simple pieces like bolts and a big old jubilee clip and fix it into that bracket.
I currently have my non-working dixie horn screwed into that bracket mounting thing and it went in a treat. Just screwed on. Now its all absorb-impacting-readified. Real word you know.
Play about with some ideas before you give up. there is always a way.
ok heres for my latest stupid idea that probably wont work. Lemeph, i took your advice good sir and did not give up. I was bored and thaught id quickly whack the induction kit back on, give it another chance. And i did miss that wonderful throaty sound! So, being in a hurry, i whipped off the old filter box, whacked the new filter straight onto the engine where the old box sat, connected the breather pipe and used a short peice of hosing to extend the original cold air itnake to be within 1cm of the new filter. I know this is not a perfect set up.. but it worked! It sounded pretty good and didnt cause any acceleration judder like i had before. So what i was thinking was...
Can i some how build a box to stop it sucking in warm air? or mod my old air box? I'm guessing it would only need a roof and 2 sides, the sides touching the engine, the rest would have to be open in order to suck in the same amount of air or it would defeate the point? Like a poor mans bmc lol. dont laugh at me its taken me a long time to get my confidence back to experiment, remeber im a TOTAL newb with engines!
