My cupra isnt boosting

[__B3NNY__]

Hope this works out for you mate, been abit of a rollercoaster!

Give the bloke you brought it from a firm slap on the back of the neck!

 

[djscorch]

As a side issue to this, how do you do a throttle body alignment in VAG-COM?

 

[__B3NNY__]

Copied from the ross tech site saved me typing it out.


Turn the key on but do not start the car.


[Select]
[01 - Engine]
[Measuring Blocks - 08]
Enter Group 060

[Go!]
[Switch to basic settings]

Once you do this you will see the top right display say ADP RUN. The TB adaptation is being done as soon as you switch to basic settings. You will see the values change and hear the TB cycle for the first few seconds then it will stop. Leave it in Basic Settings for about 30 seconds.

[Switch to Meas. Blocks] button and you're all set.
Be sure not to touch the accelerator and make sure the engine is NOT running when you do this!

What it fails to mention is that the engine has to be stone cold when you do this

 

[djscorch]

Excellent. Cheers for that

 

[DaNnY_LaD]

Right ive went to GSF this morning and got a bosch maf for 91quid...As you can tell my maf was different anway they wouldnt take it back..
So i explained the syptoms i was gettin and he put the Number of my old maf on to there data base...Well what do you know Its defo the wrong maf as its of a BMW....

Its boost fine now 1st,2nd and then 3rd till about 6krpm then goes in to limp mode..ive still got my old Codes/faults on it and havent done a TBA yet either..So all looks promersing..

 

[__B3NNY__]

A BMW Maf What a TIT that last bloke was! Do an ECU reset and a TBA and get out and get some logs done. Now you have the correct maf once we see some logs hopfuly your troubles should be sorted out fairly quickly.

It could also be the wet ecu problem wouldnt hurt to take it out and pop it indoors/air`ing cupboard overnight.

 

[DaNnY_LaD]

Even worse is that it was a Bmw maf off a none turbo corsa so hence me spiking boost then running lean very lean...and hence the Piss poor mpg..

Goin round adams when he ready to do the reset and tba..

 

[PhilW]

Glad its starting to get sorted tho.

Now clear the codes and see what the deal is.

 

[DaNnY_LaD]

FFS.!!

Cleared the codes and TBA and its the same....Gonna go round adams again to see if the same codes came back...

on hard boost it goes straight in to limp mode..So it aint the maf? any other idease

 

[DaNnY_LaD]

Right

Im gettin these to codes back

http://wiki.ross-tech.com/index.php/17963/P1555/005461

&

http://wiki.ross-tech.com/index.php/18048/P1640/005696

Also?
http://wiki.ross-tech.com/index.php/Control_Module_Maps

 

[traumapat]

i dont think theres much standard about your car..

im wondering what else the previous owner did to it. id check the map.

 

[DaNnY_LaD]

The map?

Its standard map as far as i know...Can u reset the ecu to restore the oringal map?

 

[ChrisCurzon]

have you got a boost gauge fitted? whats it boost to before goes in limp mode

 

[DaNnY_LaD]

Wen i had the bypass done and the other maf on it was 1.0-1.1 bar...

As ive put my n249 back to standard i dont have a spare t-peice till 2morro...

Or can i re-do my bypass as it aint that?

 

[ChrisCurzon]

1.1 is about 15-16 psi that aitn standard as should be 7psi standard bet its got a remap on it thats maybe requesting to much boost why goign into limp.

 

[DaNnY_LaD]

Should i go and do the bypass and then connected the gauge then report back

 

[ChrisCurzon]

i had no problems with by pass but woudl say leave it standard for min till everything sorted. just get a t peice to connect gauge up with.

 

[DaNnY_LaD]

The bypass was fine tbh was crisper and sounded ace i just put it back to see if it was the problem...

Should i re-do the bypass u reckon? can always change it back

 

[ChrisCurzon]

yea if you think was better do it and see what it boosts to before going in limp mode.

 

[traumapat]

i think a garage that does maps or a dealer can flash the ecu to stock if it isnt.

no idea what they would charge.

its only a guess but somebodys clearly fiddled with it. its running too much boost....like its been remaped? it had a 3" maf on it? somehow the boost has been turned up and the maf changed to a bmw one..

sounds like its been very badly tuned... perhaps the map has been messed with?


no expert tho...