63 replies to this topic

[paulf-cam]

wonder what it is then that causes the issues, the foam filter in the VXRs caused issues and they werent oiled afaik, maybe its true and the MAF really is made of chocolate or cheese, im ok tho i've an n/a - just thinking out loud

Its gotta be dirt and water messing it up - paper filters are very very good at filtering, whereas a foam filter isn't as good...

Ta, Paul.

[walkes]

And hence with a nice clean intake, and no oil in it would this not be worth investigating ?

[luna_s]

didn't someone run a bmc cda on a turbo without any problems ?

[VXT Tim]

I'd buy an aftermarket induction kit in a flash as it's got to be the cheapest ways of freeing up a few ponies. How do we get an expert opinion without trying it out and see where we end up or "chatting" about it using various hypothesis'. *COUGH* John

[walkes]

didn't someone run a bmc cda on a turbo without any problems ?

Think they use foam filters though as you can wash them.

[VXT Tim]

Thought BMC's were paper i used to have one on an old car.

[Code Monkey]

something like this would be ideal just for a little more growl from the induction. dont want more power, .... well maybe a little more, hmm heck why not if its going spare, couple of extra nags never hurt, ... buggerit how about a whole herd.

[luna_s]

BMC are oiled cotton filters, theres one fitted to my N/A - the oil smells funny

[Joe-Turbo]

there was a long disscusion about this a couple months ago. i few people fitted BMC's and all was fine .........until it rained. more blown amm's do a search for the thread joe

[walkes]

Ok having done a bit of trolling round other forums with tubby engines and flaky MAF - AMM - AMF what ever you want to call the bleeding things. I have yet too have seen a posting that this cone filter causes problems with dirt/oil or the likes causing problems with AMM's So then shall I take the plunge and get one.. ? The vast majority of problems with AMMs have been with oil based filters leaking into the AMM and causing them to get clogged up with oil. These appear to be well used in the Jap / Yank market and are well used within area's of Motorsport. Still have yet to find a failure of an AMM and boy have I looked into this.. PS R1CHY could you have a look at your filter and post a pic of how dirty it is ?

Edited by walkes, 17 August 2006 - 12:17 PM.

[bren.wright]

How much is a new AMM? There are loads of stories of people breaking them but not many from the horses mouth.

[Joe-Turbo]

quote from courtenays "The weak link on the ZLET engine. An air mass meter failure can lead to poor running, holding back and a lean mixture which can potentially be fatal to the engine if run for an excessive time period. We now stock air flow meters for ZLET engines available at £99.99, a saving over retail price, should one fail outside of Vauxhall warranty terms and conditions." Would love someone to find a air filter that dont blow the amm if only for a bit extra sound, think you should go for it and let us know how you get on as i said in my post above it still dont explain why the amm only seems to blow during wet weather, think there were about 3-4 occasions this happened with different cars fitted with the bmc's.

Edited by Joe-Turbo, 18 August 2006 - 02:29 AM.

[walkes]

As previously stated from trolling other forums the problems with Air Mass Meter / Air Flow Meters on turbo charged cars, they all appear to be having problems with oil filled induction kits. The oil gets into/onto the sensor wire and renders it faulty. There was one forum post of a chap who actually soaked a faulty sensor in a soapy water solution and washed the oil off. The Air Flow meter once dryed out and reattached to the car allowed it to work again so anyone got a failed AMM want to try that The APEXi power intake has no oil in it, and is a dry filter. There are a number of post on nissan skyline forums, that have had problem with K&N filter and AMM's and changed to APEXi power intake, and not had a problem. Maybe I will e-mail a few people first to see if the have tried the thing... Watch this space

[Joe-Turbo]

ok matey, fingers crossed, cant complain with the price either if it works.

[Richy]

Will strip it off over the weekend Steve, last time i cleaned/checked it, it was hardly woth doing [it was that clean].. There are a few turbo astras around here running all types of filters with no problems.

[P11 COV]

I ran the BMC for along time...as did the previos owner with no problems. I don't see how water can be a problem as the BMC is a sealed unit. AFAIK it is not oiled. It made a nice noise. Must put it back on sometime. I wasn't aware of anyone having problems with BMC. I only took it off because it was going in for some warranty work and I didn't want to tempt fate. I happy to take bets that Thorney would give a to both this and the Apexi. I think the problem is that not enough people have tried alternative Air intakes on the turbo and it is not clear why AMM's fail.

[walkes]

From what I have found with other peoples experience with a variety of makes of AMMs, the vast majority think that they have had failures with oil or with it over heating due to hot air getting in, obviously something I want to avoid. From the people I have e-mailed from the VX world and from other forums I have had a range of answer to be honest. Not too many have actually come back with solid proof of what was the cause.

[walkes]

PS I think the BMC is oil based as they do a cleaning kit with oil.

[P11 COV]

The BMC is definitly paper based (like a standrad filter) not foam. I've never oiled mine. The web site says it's washable. No mention of oil.

BMC Air filters

Edited by P11 COV, 20 August 2006 - 12:36 PM.

[walkes]

The BMC is definitly paper based (like a standrad filter) not foam. I've never oiled mine. The web site says it's washable. No mention of oil.

BMC Air filters

Do you know which one of those models you have?