Clutch engagement 4200 CC

[Emtee]

That could do it Baz. Greater airflow through the BMC filter compared to the OE filter and even more so when compared to an OE filter in need of replacement.

 

[Emtee]

Gee...that would be very unfortunate and unacceptable.......Matt aint keen on the cleanable filters......others swear by them plus sold by several reputable sellers.


P

Hmm, so now the BMC filter made by a world renowned company in use on many hundreds of thousands of (different makes of) cars around the world not only causes oil pressure failure, but it blows your MAF sensor. Absolute tosh. My oil pressure issues were underlying, and given the prognosis by Graypaul (SD2 based I assume) so were the MAF issues with Bazza's car. As soon as Bazza mentioned the filter change, Graypaul's logic holds up entirely. My only question would now be whether it needed replacing or just cleaning, but given it is in warranty, then the replacement removes any subsequent liability.

 

[Parisien]

Nevertheless Miles........good to get these things aired.....inexcusable pun........but what do people expect at this time of night....


P

 

[Emtee]

Nevertheless Miles........good to get these things aired.....inexcusable pun........but what do people expect at this time of night....


P

But P, you're a moderator! You're meant to be filtering such shameless puns.

 

[Parisien]

.....yeah....but come on.....theres nothing worse than self-moderation.........or so our parish priest used to warn us............






P

 

[Emtee]

.....yeah....but come on.....theres nothing worse than self-moderation.........or so our parish priest used to warn us............






P

Now that's the sound of a Catholic upbringing, well either that or Wesleyan. A Church of England Vicar would have been too p1ssed on sherry to form a sentence.

 

[conaero]

I know this is going away from original post but have just noticed the thred on upgrading the air filter, the day before my re-map i fitted a BMC filter, just wondering now, if the oil based filter caused the MAF problem??? which led to the clutch engagment delay.

Miles, I accept your point, but the number 1 reason for MAF failure is contamination. You can clean them but I would not bother, just replace it. I recon its wholly conceivable that the oil from the aftermarket filter has been drawn down the inlet pipe and coated the MAF causing it to error.

It is of course entirely properly the MAF was on its way out all ready, but recon cleaning it either way will make a difference.

I may be wrong but I believe the MAF is basically a wire that sits on a plastic stick that sits in the middle of the intake pipe, post filter. The wire or element, has a current put through it and it determines the amount of air coming in by the cooling effect on that element as it acts as an insulator. If its covered in oil, dirt or such else, it will affect the cooling effect of the incoming air and thus give you a false reading.

When cleaning, it should be noted that you should not rub the element, purely spray it with a suitable cleaner, I am sure brake and clutch cleaner will do the same if you dont have the recommended MAF cleaner to hand, but dont use WD40 as this again will coat it and cause even more false reading.

 

[Parisien]

Good info Matt......useful to understand more properly the workings of same.

P

 

[Hedgetrimmer]

Thanks Bazza, though two cars remapped at the same time (recently) now experiencing (potentially) similar issues?

My Problem existed before the remap therefore nothing to do with DMS.

 

[Hedgetrimmer]

Miles, I accept your point, but the number 1 reason for MAF failure is contamination. You can clean them but I would not bother, just replace it. I recon its wholly conceivable that the oil from the aftermarket filter has been drawn down the inlet pipe and coated the MAF causing it to error.

It is of course entirely properly the MAF was on its way out all ready, but recon cleaning it either way will make a difference.

I may be wrong but I believe the MAF is basically a wire that sits on a plastic stick that sits in the middle of the intake pipe, post filter. The wire or element, has a current put through it and it determines the amount of air coming in by the cooling effect on that element as it acts as an insulator. If its covered in oil, dirt or such else, it will affect the cooling effect of the incoming air and thus give you a false reading.

When cleaning, it should be noted that you should not rub the element, purely spray it with a suitable cleaner, I am sure brake and clutch cleaner will do the same if you dont have the recommended MAF cleaner to hand, but dont use WD40 as this again will coat it and cause even more false reading.

That is spot on Matt. I ran an M5 before the maserati and it is widely recognised on the M5 forums that oil based aftermarket filters from leading brands quickly contaminate the MAF.

 

[Hedgetrimmer]

Does anyone know the Bosch part number for the MAF? The search facility on the website won't let me look for "maf".

 

[lozcb]

Does anyone know the Bosch part number for the MAF? The search facility on the website won't let me look for "maf".

Item no 23

http://www.eurospares.co.uk/partTable.asp?M=3&Mo=496&A=1&B=28165&S=



regards loz

 

[conaero]

That is spot on Matt. I ran an M5 before the maserati and it is widely recognised on the M5 forums that oil based aftermarket filters from leading brands quickly contaminate the MAF.

I new it! So back to the original argument can an after market filter be bad for your car?......its letting oil through and contaminating the MAF so it must be conceivable that it can let grit through to, but accept that so could a worn OEM filter.

To see the definitive answer to this agreement, Miles and I will be having a scrap in Ace Cafe carpark tomorrow to decide. Can I all ask you to form a ring of bodies around us, playground style!

really!

 

[Parisien]

...lovin' your measured response Matt..thought it was gunna be tasers at dawn!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!



But seriously....food for thought and serious concerns about the ultimate suitability of cleanable filters and simply ensuring regular changing of standard air filters....it all makes sense!!

P

 

[Emtee]

I new it! So back to the original argument can an after market filter be bad for your car?......its letting oil through and contaminating the MAF so it must be conceivable that it can let grit through to, but accept that so could a worn OEM filter.

To see the definitive answer to this agreement, Miles and I will be having a scrap in Ace Cafe carpark tomorrow to decide. Can I all ask you to form a ring of bodies around us, playground style!

really!

Right, that's fightin' talk in my book, so if I get me car back, I'll be packing my boxing gloves in the boot in readiness.

 

[lozcb]

Right, that's fightin' talk in my book, so if I get me car back, I'll be packing my boxing gloves in the boot in readiness.

Gonna try and stay neutral here , there appears to be positives and negatives for both , i dont think aftermarket filters have that bad affect , they have put variants of them on the Racing ferrari's and the mc12's and also the turismo gt3 racers tho what spec they are im not quite sure , what i am sure about is that their not standard oem ones

and cutasy of Miles i have a beautifull pair of suede maserati ( dont get yer hands dirty gloves ) in the safety roadside pack that i was awarded over the xmas bash , both you and matt can borrow them providing you dont get blood on them hahahha



regards loz

 

[Emtee]

I new it! So back to the original argument can an after market filter be bad for your car?......its letting oil through and contaminating the MAF so it must be conceivable that it can let grit through to, but accept that so could a worn OEM filter.!

On a serious note before I go home to practice my left jab in readiness for tomorrow - Can an after market filter be bad for your car? Of course it can.... potentially. The same could be said of engine oil, plugs, brake lines, disks, pads, etc, etc

Are oil 'lubricated' after market filters of fundamentally flawed design?.... I'm still far from convinced this is the case if fitted and lubricated correctly, as otherwise it would be very widely known within the after market industry. Swapping out the air filter is probably the first mod most people make after all. Just within Maserati circles, Formula Dynamics and more recently Performance Italia have been selling them with no complaints that I've heard of or read about.

There have been numerous forum discussions over the past few years regarding MAF failure or the need to clean them. Loz did a "how-to" if I recall correctly. These discussions took place independantly of any filter queries or issues, so it would seem fair to say the MAF sensors in Maserati's are sensitive, and sensitive with an OE filter installed.

So now we have a query will an oil lubricated after market filter, and we have a query with a MAF sensor, and we're joining the two together and blaming one on the other.

I just can't see that we've proven a link yet.

Em (Cassius) Tee.

 

[Parisien]

.......ding...ding.................

Round two over.......sorta...shared on points......................we'd need maybe other indie feedback on this guys......

P