I am going to buy an induction kit
but dont know what one to get
do some give better performance , or do i pick the one that looks th best

I've got a K&N, noisey but does the job.
Apexi seem popular, never used one or heard one.
Some people will say a induction kit makes no difference, but i felt my engine revs a little more freely (or feels as it does)

the std with an uprated panel filter is the best for the coupe, but if you wont more noise the k@n our the apexi are verey widely used on here,

I have a K&N 57i induction kit on mine, which is the correct kit for the 20v.
I would like to swap it all back to standard.
It's a 20v and because I work near Surrey you could see/hear it before you commit.
It makes quite a difference to the sound.
The filter I have: http://i157.photobucket.com/albums/t47/Bodger_photos/P2260216.jpg http://i157.photobucket.com/albums/t47/Bodger_photos/P2260215.jpg

The bits I'd be after in exchange: http://i157.photobucket.com/albums/t47/Bodger_photos/20vairboxbitsneeded.jpg

When I fitted my Apexi induction kit I found that I lost a lot of torque at low revs and gained slightly more top end.

I had a K&N, changed it to ram air. How can I frankly put it.

Im CHANGING back to K&N before the week is up.

you got a pm skinflint

this happens because it gets the the wroung amount of air intake,to much and you will feel it at low revs,

so do ypu sugest putting an induction kit on or not cowboy? as you dont have onr on yours

na been told buy the ones who no not to bother,uprated panel filter only, so being that they take care of my car i got no say in the matter,but i do like the look of the k,n. one

if u put a indution kit on your will not FEEL any thing , you might tell yourself you want to but really a loss or gain of 3bhp is not somthing you can feel , plus heatsoak is a bad thing and the fiat coupe bay tends to get very hot so inless your rolling you will lose power , hot air = not a happy engine , hence why people put a intercooler at the front of a car . so only really pro on a standred car is ======noise!

ryan

We just did the swap last night and the car feels different with the standard airbox setup.
This has extra resonators- presumably to make the engine quieter- and the air feed is from just above the radiator.

Basically it seems smoother but has lost the v8-like growl, and I think there's a tiny bit of mid-range punch missing too but this is hard to quantify. Maybe a new paper filter element would help?
The cone would've been drawing cooler air and resisting the air flow less so I guess it's possible?

I'm happy with getting it back to standard but I guess you win some & lose some. I'm definitely less skeptical about cone filters having used one for a while.

I'd be interested to see what you think Foxyads?

On the N/A 20V there is a lot of resonators in the induction piping as Skint says.

By adding a freeflow filter you will bypass this. Noticable difference will be a slightly increased throttle response. slightly better free revs at higher rpm, is also noticable.
I doubt there is much bhp increase though maybe 1-2bhp if it recieves enough cold air from ducting.

On my HGT I removed the induction feed to the airbox and re roughted a new direct one. kept it still quiet but felt much better on pick up.

The noise though is lovely. A true burble.

So in a nutshell...If I install my Apexi filter wz my Side induction pipe...wz my pro alloy FMIC, there will not be any gain ?? in any terms ????

i went for a pipercross induction kit on mine, sounds nice has a lovely roar to it and also made my dump valve chatter instead of going tssshhh which sounded really nice, but took it off after a while as you do lose some low down torque. ive just gone bac to my old airbox and standard air filter picks up much better from take off now.

Don't do it. Wont make your car any faster, wont sound better (unless you have a thing about Dysons).

Turbo cars and nice induction noise don't work IMO. The big spinney, whirly thing gets in the way.

Loads of conflicting info on this thread as there is a mixture of turbo'd and NA drivers giving their views on an induction kit.

Years ago myself and Hanny did a back to back test on an airbox and a K&N induction kit on the rolling road at Powerstation, that was on a 20vt model though.

The facts.... The car gained 10bhp and the same amount of torque. There was no loss of torque, infact the torque was the same up until the turbo came in at around 2400rpm and then the torque was higher right up to red line.
Yes the car does feel slightly sluggish at very low revs on an induction kit but we're talking 1500 to 2000rpm.

Not sure what to expect on a NA coupe, I would imagine reducing the inlet length would show a reduction in torque at low revs but you may feel a gain higher up the revs ?
Not sure it would be such a good mod for the NA as it benefits from some extra torque lower down.

Good point, sorry didnt spot that. Should make a nice noise on a NA. From experience it makes a terrible one on a turbo car.

I severely doubt you will get 10bhp increase on a standard car though. Perhaps yours or Hanny's car was already at the limits of the standard airbox.

It was Hannys blue coupe Cosmo, the only mod at the time was a Miltek exhaust.
I can see it being possible, fitting the induction kit removes 3 x 90deg bends and opens up the filter.

Main thing I think is the 2" inlet pipe on the box. I strongly suspect a 4" pipe and a new std filter gave me several HP..

apperently you lose 15% on every bend with airflow, so removing the original box takes out 3 of the bends and replaces them with 0ne 45deg so thats got to be better.
and ive got a 3" cold air feed for the 57i and it seems fine.
yes it makes lots of noise,but a better breathing engine is a happier engine.

Ive fitted a K&N to my 20vt and Blingmasters 20v N/A, and i can tell you both pull much stronger between 3500- 6000 revs.
The ECU will alter the fueling for the increased air flow. I noticed the difference after several miles [it takes the ECU a while to adjust]. Now the car flies. Ok the induction is load around the glovebox area, but on song, its brilliant.
I reckon its added several BHP to the 20v N/A due to getting rid of half the pipe work! Again, it took a few miles for the engine's ECU to alter for the increased airflow.

Andy.

Downside of the K&N is that they are oiled which in the long run is bad for the sensitive AirMassMeter. Oil on that surface = more dirt = reads less air = weak mixture = bad for yer set of pistons.
It may take a few miles though.

A better bet is the Apexi filter.

I just came beck from a 750km drive with my new P.A-fmic and s.i.p-well I used a Simota carbon box with a cone filter but in a 90 degrees turn so the opening of the box is right in the PIU right side vent!
Id say--torqe is very impresive and the car pulles much liner and stronger from about 1500-2000rpm! How ever it may be a littel -bit short of air in the 6000 -7000 rpm regin,it feels a better still to try the cone with out the box.i have a gt28r btw.

did the swap todey,no doute more power at 4000-6000 rpm but less torqe down and more leg------I find it hard to decide what is better.....

Hi,

I changed mine over the weekend and am a little dissapointed with the loss in low down torgue and the extra lag.

I have been searching but I remember reading a few years back that you should disconnect the battery to reset the ecu so it can adjust better for the new air flows or am i dreaming.

Will give it a little while. (Have driven 150 miles or so)

CollieD

Is the standard airbox really a restriction? I'm sure someone on here got 320+ BHP with one?

I carried out a bit more testing last night on a private road and I think there is definitely more torque from 4500 -7000 rpm but the lag is very noticable lower down.

Can anyone state if its necessary to disconnect your battery to allow ecu to reprogramme properly to the new settings?

CollieD

You can disconnect the battery to reset the ECU, although removing the main fuse is probably easier

However I believe that the ECU learns the new situation fairly quickly without disconnecting, so that by the time you've gone through a tank or two's worth of petrol, it will have learnt.

Thanks dave,

I think going through the few tanks of petrol is easier.

CollieD