New MAF before remap?

[K Simmonds]

As I'm happy with the way the car is running I've started to think about getting it remapped as well as the final couple of things to do before hand, ie fit the RS2 injectors/7A FPR and make sure they work properly, boost leak test etc.

Before I started swapping injectors I though I'd pop my spare ABY MAF on to see if it made any difference to the AFR's, bearing in mind it was running a tad lead (13.1) on boost with the RS2 MAF. To my surprise it made a big difference, I could see it was better with the N75 unplugged so I plugged it back in, now if I floor it I'm seeing 11.3/4 as the boost comes in and it leans out to between 11.6 and 12.3 as the revs rise depending on load, still seeing 14.7 on cruise. That's using what I reckon is stock software as my Zeitronix is telling me I'm seeing just over 0.8 bar peak boost, my analog gauge is slightly more optimistic at just under 1 bar. I'm not suggesting it's spot on or anything, just a lot better than before and I can feel the difference, ended up going 10 miles trying to get a decent pull through 3rd gear but kept running out of road.

Not sure if I should invest in a new MAF before remapping or stick with the 20 year old ABY one which seems to be working just fine?

[Error404]

I thought they were NLA now?

[RoadKill]

they are tryed to get one , i clean mine and its still working ok , there is new one on ebay but dont know how long it would last

http://www.ebay.co.uk/itm/Audi-Rs2-2...vip=true&rt=nc

looks like hes sold out

[Error404]

They were non genuine anyway so probably crap.

[K Simmonds]

I thought they were NLA now?

Fiddle sticks! I wouldn't trust anything other than a genuine Bosch unit or one reconditioned by them, I'll see what my local factors and Bosch agent can offer out of interest.

[bilko0795]

I bought the last one from Audi

Only thing is the guy at Hereford audi said that he doesn't know what would happen if the maff broke down before it's warranty ends if they could replace it, just hope it lasts

[K Simmonds]

I remember you having a bit of trouble with your car Ray, did the new MAF help? Hope you got it sorted.

Surely Bosch must offer reconditioned units, I wonder if the same MAF was used on other Motronic cars like Porsche's for instance?

As I found there to be such a large difference between two seemingly good units I think it maybe prudent to fit a new one before splashing out on a mapping session only to have redo it if the MAF ever has to be replaced.

I'll give my RS2 one a good clean and give it another try, can't see it making that much difference though, if I had two second had units that behaved the same I'd be happy enough.

[bilko0795]

[QUOTE=K Simmonds;767966]I remember you having a bit of trouble with your car Ray, did the new MAF help? Hope you got it sorted.

Surely Bosch must offer reconditioned units, I wonder if the same MAF was used on other Motronic cars like Porsche's for instance

I think Audi would have something in place because they have only just gone NLA.
And they must have sold a few before then with warranty.

Yes m8 car sorted going well now I am now on the hunt for a little more power im thinking Volvo's k7400 turbo as im on a budget and the car is costing me a lot of money at the mo trying to get it to stop leaking it's more of a bath tub than a car would you believe i just paid 590 euro's for to new door seals and they want 896 euro's for a new carpet. I don't think i can afford it since there are other things first like a new timeing belt and water pump to do.

[K Simmonds]

Glad you got it sorted Yeah, Audi must have some sort of contingency in place for goods with warranty that are NLA, well one bloody well hopes so!

That Volvo unit looks like a cracking turbo for the money, a few other members are in the process of installing them be interesting to see how they get on.

I thought I'd stopped mine leaking but no, it's still finding it's way in on the drivers side, nowhere near as bad as it was but annoying non the less. I'm lucky that I have a garage, if I take the car out in the rain I leave it overnight with a dehumidifier running inside which is keeping on top of it. The only way I'm ever going to cure it completely is to fit another windscreen properly instead of the half assed job Auto-glass do.

[martinws]

Depending on who is doing the mapping you can swap to a new rs4 MAF. I'm pretty sure PRJ can map to that.

[andy10v]

That is a good point, just for cheap replacement maf in the future.

http://www.s2forum.com/forum/showthread.php?t=49825&highlight=maf

[K Simmonds]

Cheers chaps, I had thought of that but was under the impression that it was only an option for ABY/AAN/ADU engines, suppose that's another good reason to covert to the later ECU and coil packs.

[andy10v]

Ah, never thought of that.

I think there was a new RS2 maf for sale on here for 300ish.

[Cottis]

Yeah I saw an RS2 new unit for sale somewhere recently and nearly bought it as a spare for when the inevitable happens. It ended up being too hard to part with the cash when mine is working fine so I refrained. Checked the history recently and it was replaced with an orig Bosch unit in 2007 that has now done less than 25k miles. Probably not a definitive answer but how long do they tend to last age/mileage wise? Starting to think I should have bought that RS2 MAF i saw now. Mine is also a 3B