When to replace MAFs?

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spurtle
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Post by spurtle » Fri Jan 15, 2010 6:02 pm

The cables / connectors go from time to time, too - and can be intermittent. That really had me scratching my head with the old S4! Be careful when you're unclipping the old MAF as it can be a job to sort out.
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ecain63
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Post by ecain63 » Fri Jan 15, 2010 6:36 pm

Thats what happened to mine. The plug that connects the N75 had perished so no matter how many new N75's i fitted, it never worked. Then i had a new plug fitted........and hey presto.
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GarethRS
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Post by GarethRS » Sat Jan 23, 2010 12:25 pm

Hi guys,

Been reading this with interest and I might change my maf's and N75's just to be sure.

Where is the best place to buy these from?

Thx

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CliveH
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Post by CliveH » Sat Jan 23, 2010 3:20 pm

Where are you based Gareth?
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Post by GarethRS » Sat Jan 23, 2010 3:23 pm

Kent, must update my profile, lol.

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CliveH
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Post by CliveH » Sat Jan 23, 2010 4:01 pm

MRC Tuning www.mrctuning.com

not that close to you, but not too far either
Clive

S2 ABY coupe, S4 B5 saloon, S4 B6 avant
RS4 B7 phantom black saloon, mint, fully loaded, low mileage - FOR SALE!- http://www.rs246.com/index.php?name=PNp ... ic&t=88981
S8 D2 facelift, RS6 C5 saloon, both gone but not forgotten

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Shoppinit
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Post by Shoppinit » Sat Jan 23, 2010 7:30 pm

I might change my MAFs, just to see. They're a bit pricey though.

Can anyone answer this:

Why would lambda correction not compensate for a bad MAF? This is what it's for after all?
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Post by GarethRS » Sat Jan 23, 2010 8:03 pm

CliveH wrote:MRC Tuning www.mrctuning.com

not that close to you, but not too far either
ok, I'll drop them an email. I was there in December for a 20k service and stage 1+ map.

Thx

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Shoppinit
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Post by Shoppinit » Tue Jan 26, 2010 4:55 pm

ecain63 wrote:Thats what happened to mine. The plug that connects the N75 had perished so no matter how many new N75's i fitted, it never worked. Then i had a new plug fitted........and hey presto.
What were the symptoms?

Also, is there anywhere you can get MAFs at a reasonable price? Just had a silly quote from Audi.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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CliveH
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Post by CliveH » Tue Jan 26, 2010 4:58 pm

MRC Tuning do them on an exchange basis :thumbs:
Clive

S2 ABY coupe, S4 B5 saloon, S4 B6 avant
RS4 B7 phantom black saloon, mint, fully loaded, low mileage - FOR SALE!- http://www.rs246.com/index.php?name=PNp ... ic&t=88981
S8 D2 facelift, RS6 C5 saloon, both gone but not forgotten

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Shoppinit
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Post by Shoppinit » Tue Jan 26, 2010 5:08 pm

Cheers Clive, I'll give them a call.

Has anyone got any logs for a working car? It might be useful to compare, and I'm loathe to replace yet more parts that are working perfectly well.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."

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Post by MoRS6+ » Tue Jan 26, 2010 5:09 pm

CliveH wrote:MRC Tuning do them on an exchange basis :thumbs:
How does that work Clive?

How long do they take to replace?

One thing I would dearly love to do would be at the MRC RR day in April, do a run with current components and then do another run with 2 new MAFs and a new N75 just out of morbid curiosity to see if there would be a difference. Would be quite cool no? :)

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CliveH
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Post by CliveH » Tue Jan 26, 2010 5:24 pm

They take out your old MAF and replace it with a new one, and the old one goes back to Audi. Takes about half an hour.

Your RR day plan sounds like a good one :thumbs: Are you going to be there all weekend?
Clive

S2 ABY coupe, S4 B5 saloon, S4 B6 avant
RS4 B7 phantom black saloon, mint, fully loaded, low mileage - FOR SALE!- http://www.rs246.com/index.php?name=PNp ... ic&t=88981
S8 D2 facelift, RS6 C5 saloon, both gone but not forgotten

MoRS6+
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Post by MoRS6+ » Tue Jan 26, 2010 5:30 pm

CliveH wrote:They take out your old MAF and replace it with a new one, and the old one goes back to Audi. Takes about half an hour.

Your RR day plan sounds like a good one :thumbs: Are you going to be there all weekend?
Well I've got my name down for Sat, but could go all weekend I guess :)

Re: changing the MAFs and N75, can't think of a better time and place to do it, can you?!

I wonder - if there was no difference, do you reckon Doug would take the new parts back? Or am I being too cheeky there?

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CliveH
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Post by CliveH » Tue Jan 26, 2010 5:52 pm

I agree, I cant think of a better time or place to do it.

As to your suggestion, yes probably a bit cheeky but you can ask for nothing ;) Maybe a better route to go would be a health check first, which will determine whether your MAFs and N75 are in good order or not?
Clive

S2 ABY coupe, S4 B5 saloon, S4 B6 avant
RS4 B7 phantom black saloon, mint, fully loaded, low mileage - FOR SALE!- http://www.rs246.com/index.php?name=PNp ... ic&t=88981
S8 D2 facelift, RS6 C5 saloon, both gone but not forgotten

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