S3 Flat Spot?

[vishal]

Hi Guys,

Have recently noticed that in 2nd and 3rd (normally) im not getting the same kick i used when putting my foot down.

Now this only occurs sometimes also, when i do get the correct boost, i can tell right away, hence the concern over this "flat spot"

After reading a few posts, and speaking to a local specialist, i believe this could be the MAF sensor? Are they cheap to replace? And is this normally the case for the problem i have?

Your advice is appreciated

 

[vishal]

quick one, is the air flow meter, the same as the MAF?

 

[vishal]

anyone?

 

[Tallpaul]

Could be MAF, DV, N75, Leaking Hose. Lots of things really.

New MAF is £88 from Audi.

If you know somebody with VAG-COM then that's be where i'd start.

I doubt a problem like this is generating any specific fault codes but it's worth checking. If not, you need to use VAG-COM to do some data logging, i'd start with the following:

g/s airflow - will tell you if your MAF is working

Boost Requested vs Actual - Will tell you if you are generating the correct amount of boost from the turbo; indicative of a number of things such as leaking hose, faulty DV etc.

% Duty Cycle (N75) - Shows whether the N75 is opening the turbo wastegate the correct amount at the correct times; indicative of a simple split hose or a stuffed N75

 

[ChriS3]

You can get a new MAF (Mass Air Flow) as an exchange part for your local stealer. £60 or £80 quid. Piece of pi55 to fit.

 

[dickys3]

quick one, is the air flow meter, the same as the MAF?

Yes, same thing

 

[vishal]

Cars booked in at Audi in amersham tomorrow ( way cheaper than crazy london rates) and im 99% sure the problem i have is the MAF, as all hoses etc have been checked.

Now they want 170 + vat for the part and to fit it! Which is a bit over the top, so, wanted to know if any of you have pics, or a brief description on how to replace this, as if its that simple, im sure ill be able to do it

 

[vw754]

take you 15 minutes to take your old maf out and install new one!!
2 screws thats it! dont let them ripp you off.

 

[simch]

what a bunch of rip off merchants!! Maximum of 10 minutes to fit one. Charging you about 1hr 45!