Audi TT Forum banner
Cancel
Create thread New Garage Forums

P1297 Check Engine Light ...

Jump to Latest
20K views 112 replies 9 participants last post by  doodlestj  
#6 ·
The ross-tech article.

Have you logged the car? The rosstech article is pressure drop between turbo and throttle body... so if you log it, you will see what the desired and actual boost is.... maybe the map sensor is at fault, when I had that error the DV was jammed open?

I assume all the other errors disappeared like the misfire?

Have you checked for splits on the left side (looking at the engine) on the inlet manifold leading up to the brake servo.

I take it there's no hardware hacks like resistors to try and fool the car into higher boost.
 
#112 ·
The holes are bigger than the bolts. Loosen them and you can see the impact at the end of the track rod and lower arms, suspension etc a mm makes if you twist it.. they are also bushes so can be stressed in one direction. A tiny twist can make a big difference..

That's why TTShop said you need alignment after lowering the subframe a touch to fit a downpipe, because it probably won't go back to where it was before.

I'm not saying it will fix your issue, some people have stripped the threads reusing old bolts as they don't stretch anymore.
 
#110 ·
if you removed the subframe with all your shinanigans - have a go at re-centring it - and make sure if you had removed it and used old sub-frame bolts - get new ones! I used stock wheel bolts to help centre the sub frame as they are V'd or whatever the real word is - and once relaxed and centred put in the new sub frame bolts. they need to be done up proper tight - and then a further stretch 90 degree - it will feel like you are pushing it off the axle stands with a breaker bar and extra stuff on it too
 
#96 ·
Are you sure you have the right map sensor? Has it been replaced at some point? I started my car after some modifications and accidently used my 4bar map sensor without the corresponding map updates and it had the same error.
 
#93 ·
All the XDF does is show the values at addresses with a sensible code and description and sometimes instructions (eg make 0 for decat) and performs calculations on them to show you something sensible, so if the value is milliseconds in the map it might be divided by a 1000 to show you seconds or similar.

Have you found a BFV XDF ?
 
#91 ·
The BAM XDF, doesn't have the same configuration as your BEA ECU... I manually added a table reference to a test file to demonstrate the LDRXN (max load) table was in a different MAP address in your BEA ECU.
If you're changing the bin file, you're going to need to either add the tunerpro checksum plugin or use the nefarious ms-dos executables before updating the map and writing it back.

It might be worth posing a question regarding simply putting a BAM map on a BEA ECU in nefariousmotorsports they are both ME7.5 aren't they. I don't believe REVO have different maps for AMK / BAM / BFV (they are all wideband 7.5 with VVT)
 
#85 ·
No idea to the answer, but there's definitely some emission changes also maybe elevation changes.


I have a spare ecu and power supply so am a little less fearful if these things. I know they changed around the organisation of some of the me7.5 VAG ECUs .. but I don't know if a BAM maps works on a BFV ECU and vice versa. I have only bricked an ECU once and that was because I didn't update the checksum, and then I wrote a map car started perfectly well and at the end of the engine start, the car worked fine until a restart. Then nothing just turned over and couldn't read or write a map, you're supposed to 'bench flash' the original map back on.. its where you put a wire onto one of the pins.. but leaving it disconnected for a period of time also allowed it to be re-written over again.

If I get a chance over the next couple of days I will try and write your BEA map onto my spare ECU.. if it works... it doesn't mean it will work the other way too.
 
#83 · (Edited)
It's used with winols, the locations are the same place.. but it sounds like a mission.

You might get a demo version...

If it isn't a daily driver, I would try and put on a BAM map if it is WideBand with VVT 225 or an APX map if narrowband... if it doesn't work try and put the original map back on

The QS BFV has a different structure maybe try that to view your bin ?
 
#81 ·
If you make any changes you must generate the check-sum otherwise it'll start the engine once then brick the ecu... and you'll either need to bench flash or leave the battery disconnected for a certain period of time..

There's some guys on nefmoto who have some tools which find the code words and work out the tables etc due the xdf
 
#77 ·
I can download your zip file but need a corresponding "TunerPro" XDF file as it is not the same structure as an AMK or BAM (wideband) and I don't think it is the same as an APX (APY too) which are narrowband.

I have just upgraded my laptop to Windows 11 and appear to have lost my NefariousMotorsports login details to their forum in order to find someone with a BEA ECU XDF, I wonder if it is structured the same as a BFV (Audi TT QS) as that has a different definitions file to BAM and AMK (even though you can just overwrite it with a BAM file structure.

I know it is not BAM structure because a tell-tale sign of whether the engine has been remapped is the LDRXN table..

eg this is a map I did a couple of years ago when I first got my decat pipe.
Image


a stock "max load" goes to about 165

but your BEA bin file shows this

Image

which means a BEA has a differently organised file.

I can find the settings

Image


but that doesn't show the labels (RPM) above but they will be the same as mine

here is on top your Max LOAD and a stock BAM - if you have a remap it is pretty mild.

Image
 
#73 ·
Download tunerpro and a decent BAM xdf.

I assume your bin file is 1024 KB.. if it is smaller, it will be an encrypted map say from Revo.

I thought you could still upload zip files to the forum? If you manage to zip and upload your bin, I'll tell you if it's been mapped. Assuming it's a BAM or BFV
 
#66 ·
What car do you have?

If it is a BAM then you can download the MAP using Nefmoto and a blue KKL lead - I don't use this, I use MPPS but that's just what I had already bought and used.. lots of people use Nefmoto (it is a well supported and maintained product, using a readily available generic cable)


You don't need to jump pins on ECUs etc... there are instances in some cars (like my S3) where the k-line signal is interfered with by the dash.. in my opinion, if you cannot do the basic stuff with a simple cable plugged into the ODB port in the car and USB port in a laptop.. (after checking leads and settings) then it might be the car...
 
#64 ·
doodlestj said:
So I went under there and couldn't notice any cracks in the exhaust. However, I did notice this coupling clamp (see pictures). And though I couldn't see a leak, when I turned the car on I could hear, feel, and smell exhaust coming out the side of it.

So a question - why is this clamp here, was something there originally and removed?
And a follow up - this exhaust leak is past the last O2 sensor... so am I correct to say this can't be causing the CEL?
Click to expand...
The sleeve joins the cat pipe to the cat back, you might find the bolts snap trying to undo them, it looks like it's already been done up really tight, as the clamps are already closed. I changed the bolts for new stainless coach bolts when I needed to remove it. It's quite a clever sort of multi layer sleeve which tightens evenly, but they can break up.. you could try removing and refitting with some decent silicon exhaust sealant.

BTW no you cannot read or write maps with vagcom... but it takes some research to get the right software tools and cables...
 
#59 ·
If you are talking about getting a new map? By a real tuner, they might highlight an issue in pre-tune checkup.

But if it was me and the car wasn't behaving as expected, I wouldn't blindly put on a new map as it will exacerbate any fault. I would download the map and look to see if it is not stock. Then put a stock map on and use Visual Me7logger to get a real log of value, then you know what the load, boost, timing, injector duty cycle, waste gate duty cycle, knock detection etc should be and hopefully identify any issues. With an Me7logger log file you will see 200 readings from like 30 sensors for a 10 second period...

If you have a real vagcom lead I think they can run in dumb kkl mode or just get a blue kkl lead from China for a fiver.. that can be used to read / write ecu files using NEFMOTO (I don't use that - i use MPPS, which is a different lead) and are used in vcdslite and used with Me7logger.
 
Audi TT Forum
posts
3.7M
members
90K
Since
2002
A forum community dedicated to Audi TT owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!
Full Forum Listing
Explore Our Forums
TT Forum - Mk1 TT (8N) TT Forum - Mk2 TT (8J) Off Topic TT Events TT Forum - Mk3 TT (8S)