lewisdj

I currently have a Tegiwa Induction kit fitted to my Blob Sti. It was remapped when the kit was installed.

Under inspection it looks pretty dirty and needs replacing.

Was looking at a pipercross foam filter as i have had a few before and love the noise they give off!

Would the car need to be mapped again with a different brand/larger filter? I.e would a different brand be sucking in more air and mess up the original map?

Cheers

dynamix

iTrader: (3)

I would personally steer clear of the oiled foam filters like that as they completely mess up with the maf sensor.

Any changes like that would need the map at least checking to make sure all good IMHO though

ianbott

Dynamix i know you do remaps and stuff so i'll ask you, why does the map need to be tweaked let alone even checked when changing a filter?
Now don't get me wrong i'm not trying to teach you to suck eggs, i bow down to your superior knowledge but is the ECU really not clever enough to adjust fuelling for that bit of extra air? ECU's don't need re mapping for summer and winter so what's the difference?

dynamix

iTrader: (3)

The issue isn't just the filter the main issue is the cross section area of the tube containing the maf sensor. Any variance in the size of that compared to what the ecu is calibrated for affects how much air the ecu thinks is going into the engine. The ecu has a certain range that it can correct within (over time) to get it to what it thinks is right within the closed loop area but relying on this correction and hoping that the correction is proportional to air flow for when in open loop is too much of a risk IMO.

I have many calls about cars running lean when putting on induction kits as perhaps they are correcting to the full extent on this and can't correct any more. I had one last night in fact and they were enquiring about getting the CEL for lean running removed. Easy - take the induction kit off.

ianbott

That's explained it pretty well perfectly thanks.

lewisdj

Thanks for clearing that up for me, i think i will just stick to the same brand of induction kit then, save myself messing around with remaps

Also, is performance directly related to the size of the induction kit? The one i have on the car now is pretty small...would i benefit from a much larger induction kit and remap to suit?

cheers

Shaun

Let's be slightly more precise about this....

Not many induction kits offer bigger MAF pipe diameters, so assuming that, any increased airflow due to filter type is going to be marginal... again assuming you are changing from one induction kit to another.

The other thing is your MAF scale and based on your current mods, I can't see a different cone causing you any problems in that area.

So.....

Assuming the above and taking note that you measure the Internal Diameter of the new Induction Kit MAF pipe, against your own. If they are the same you will realistically be fine swapping to a new cone.

happydude303

iTrader: (1)

to be fair you standard air box witha good panel filter is all you need really unless you heading into big horse power

joz8968

iTrader: (13)

Duncan or other mappers...

Would it be okay to run one of those - much maligned for Scoobs - HKS mushroom jobbies on a MAFless/Simtek equipped car?

dynamix

iTrader: (3)

The 'rock-stopper' filter. Lol

joz8968

iTrader: (13)

lol

I take it by that comment, the foam's holes are a bit 'too large' to safely employ it on car engines then?!

Shaun

There is an element of truth in that, although I have seen mid and peak increases (even at or around the 350bhp level) when changing to an induction kit. IMO though I don't think it's worth the expense on a Newage if running up to 400bhp, as the OEM system is good enough.

Shaun

It depends which one you're referring to. I was running one of these (if you're referring to the green one) for a couple of years on a 95 WRX JDM, back in 2000!! No issues what so ever!

Don't take what some say, as absolute fact!

360ste

iTrader: (1)

Can your air filter be cleaned and re-oiled??? Saves any hassle then.I am sure K&N say you don't need to clean theirs even when looking really grotty. I think they even comment about it improving the filteration, could be worth checking their site.

lewisdj

Hi, yes after a good think im going to just clean the original induction kit... seems like a complete waste of money getting a different brand anyway..

Cheers

Scooby5tu

Sorry for bumping an old(ish) thread but I'm looking at getting the same induction kit as you (Tegiwa) and was wondering what they are like? What's the induction noise like, noisy, noisier than standard, quiet?

Scooby5tu

Anyone??? Please?? :-)