fitted induction kit today... woo hoo

Originally Posted by mclovin159

I have the mesh guard fitted after the filter before the maf. I cannot see why shortening the pipes would destroy the MAF???

Think you misunderstood, having the MAF so close to the filter wouldn't destroy it but its a bit more likely that the MAF will not read as spot on. But if its idling better that it was before then this can't be the case.

I think the theory behind keeping the MAF a good distance away from the filter is so that the airflow will even out, as the MAF can only detect what is flowing past the little wire in the sensor unit itself (by measuring the voltage needed to keep the wire at a constant temperature), the ECU then makes an assumption on how much air has flowed past by assuming whats flowed over the wire on the MAF is an average for the whole cross-section of the intake pipe. If turbulent air was flowing across the wire on the MAF, then the ECU might think the engine is getting more or less air than it is..

But in your case, it looks like this hasn't happened and everything is working as it should

Originally Posted by mclovin159

I have the mesh guard fitted after the filter before the maf. I cannot see why shortening the pipes would destroy the MAF??? I have to be honest, I have noticed no difference in performance. Just a much better sound. However, my car now idles better. Before with the standard box fitted it was hunting around ever so slightly. Now it just sits dead steady. Jason, they do seem too good to be true. I had a look at the filter in the store and it seems very similiar quality to a K&N filter. The bloke in the store told me the only major difference is that you dont pay for the name. From what I can see it is possible to mount the cone where the standard box sits. This would keep it colder and get a lot more air flow to it. Im more into the sound the engine makes rather than all out performance so im happy with the set up I have for the time being

The noise of that V6, I have just ordered a stainless exhaust to make the most of what is there, I've removed the baffle boxes on the inlet, and the filter will be last, you could start a trend on this one.
Your installation looks very good where it is, even if you do get warmer air into the filter.
Keep on enjoying the 156 pal

Thanks for explaining that Pud. If it does knacker the MAF I will post up straight away and let everyone know!
Thanks for the comments Jason. I might try and get a little video at the weekend of it in action. I got my mate to drive it and... I'm not just saying it because I have one now either... it is one of the best sounding cars I have owned. Much better than the turbo'd jap stuff I've had before.

When it comes to sound nothing less than a Ferrari V8 beats an Alfa V6 for sound.

Check this out for the noise - bearing in mind its only a mildly tuned 3.2 V6 straight from the GTA:

YouTube - Alfa Romeo Diva Villa d'Este

im planning on mountin it of the existing down pipe that attaces to were the airbox wub be. ill probbaly add a heat sheild aswell for good measures.lol

wot u lot think?

Originally Posted by Pud237

Think you misunderstood, having the MAF so close to the filter wouldn't destroy it but its a bit more likely that the MAF will not read as spot on. But if its idling better that it was before then this can't be the case.

No no, I meant that it would actually destroy the MAF. I've seen it happen at least twice to two 147s and I consider it a sure thing. I don't know for sure why it happens, sorry. Maybe the sensor's wire that gets really hot when working is corroded by the excess of oxygen.

That goes for TS engines though. maybe the V6 MAF (similar sensor, bigger housing) has already lower airspeed in its housing (airspeed is reversely proportional to cross-section area) so there is some margin of increasing airspeed without the risk of frying the sensor wire.

Originally Posted by selespeed-lover

im planning on mountin it of the existing down pipe that attaces to were the airbox wub be. ill probbaly add a heat sheild aswell for good measures.lol

wot u lot think?

Sounds like a good idea to me.

so doin that wont frigg up my MAF?

dont wanna damage the beast.

Originally Posted by alfasud.ti

No no, I meant that it would actually destroy the MAF. I've seen it happen at least twice to two 147s and I consider it a sure thing. I don't know for sure why it happens, sorry. Maybe the sensor's wire that gets really hot when working is corroded by the excess of oxygen.

That goes for TS engines though. maybe the V6 MAF (similar sensor, bigger housing) has already lower airspeed in its housing (airspeed is reversely proportional to cross-section area) so there is some margin of increasing airspeed without the risk of frying the sensor wire.

Really? The only destruction of MAFs I know of associated with cone filters is when they have excess oil on them which then gets burnt onto the MAF.

I would imagine that the MAF's wire is made from something that doesn't react with oxygen regardless of temperature and flow rate.. I could be wrong though.

Pud... That sounds awesome.
Selespeed I think that its a good idea. Keep us updated.
If the MAF gets corroded by the very thing its meant to measure the flow of I will be gutted. I've never heard of that before

Originally Posted by Pud237

Really? The only destruction of MAFs I know of associated with cone filters is when they have excess oil on them which then gets burnt onto the MAF.

I would imagine that the MAF's wire is made from something that doesn't react with oxygen regardless of temperature and flow rate.. I could be wrong though.

I don't know. Maybe that's what happened in all cases I know of but I would expect that the people that fit these filters are careful not to overspray them with oil. Could be wrong though.

On the other hand I've never heard of a BMC CDA/DIA equipped TS blowing a MAF regardless of how much oil has been sprayed on the CDA's inner cone as long as it is well away from the MAF. I have a BMC CDA myself and have had it cleaned and sprayed with oil many times and never had MAF problems apart from a dead wasp stuck on the grid of the MAF housing.

Never had any problems with MAFs down to my BMC CDA on both V6 and JTD, although I did have a knackered MAF before I got the CDA fitted, which I suspected was caused by the previous owner fitting the wrong size filter, and also the screws holding down the airbox lid had stripped threads and pull out (due to the expansion of the over large filter that was jammed in there, presumably )

I put a new MAF on and it's been fine with the CDA ever since, I cleaned it once and re-oiled following the procedure, upon re-fitting the CDA remove the MAF and allow the car to tick over for ten minutes, as well as giving it a few revs from idle to pull off (ooh er ) any excess oil..

I'd definitely recommend a BMC CDA when the time comes to replace the airbox itself, it is a really good induction solution, but is quite pricey..