I can see the high figures on yours, so a minus figure on lambda means it's adding fuel ?? I thought that would mean reducing it ??

And whats the score with the actual and specified lambda figures is the wide variation normal ???

I can see the high figures on yours, so a minus figure on lambda means it's adding fuel ?? I thought that would mean reducing it ??

And whats the score with the actual and specified lambda figures is the wide variation normal ???

The minus is leaning it out, I think he mapped around it by making it rich in the area it wasn't happy before, and therefore now it leans it out instead. By doing this, it doesn't hit the lean throttle cut.

Just throwing this out there.

If my turbo was knackered, would it struggle to make requested boost ?? likewise if it has a boost leak wouldn't it show in the VCDS logs between act/spec boost levels ??

Just throwing this out there.

If my turbo was knackered, would it struggle to make requested boost ?? likewise if it has a boost leak wouldn't it show in the VCDS logs between act/spec boost levels ??

Usually if a turbo fails, it will either chuck clouds of smoke out the back (oil seals) or the bearing will go, and allow the compressor and / or the turbine wheel to rub the housing, when that happens you would usually hear it and it wouldn't be long before the turbo completely fails (as in no boost at all and a possible wrecked engine).

But they will usually still produce the boost ok until that point.

Actuator failing or a wastegate issue could cause issues in creating boost.

A small boost leak may not showup, as the turbo can compensate to a small extent (i.e work a bit harder to maintain a pre-set boost level) but a large leak and it should be quite obvious.

Nice one.

No smoke, well other than a slight faux pas with the boost tester lol

Cossie did you solve your problem with a new fuel pump?

No, nothing changed.

N75 and DV changed today thanks too Billy

No change ......

No, nothing changed.

Can you try with 4bar FPR+LCR fuel pump and post back the results?

My boost is good up to 5500rpm (0.9~1.0bar@5500rpm) where it takes a plunge to 0.6bar. The pointer of the boost gauge just drops in second and I can clearly feel lost of power....

I will be doing more testing next week now, I should (hopefully) have a set of brand new LCR injectors coming too, so if it is a fueling issue, then a new fuel pump, and new LCR injectors should cure it.

Since the car was mapped, it's much less noticeable, I know the problem is still there, as it goes flat in 3rd gear at 6800rpm and then pulls well again at 7000rpm.

I should findout if it does the same thing in 4th at the weekend as I will be throwing the car around the track.

This video was made with stage 1 map; http://imageshack.us/clip/my-videos/854/c6d.mp4/ but with all stage 2 supporting mods installed on the car.

Watch what happens at 12s....

Now with stage 2 map boost is around 1.45bar but this **** has started to happen again. Is it possible that after 2 years pump has failed again? I am really considering buying APR fuel pump but it is costly and I don`t want to spend money if it`s not necessary.

This video was made with stage 1 map; http://imageshack.us...os/854/c6d.mp4/ but with all stage 2 supporting mods installed on the car.

Watch what happens at 12s....

Now with stage 2 map boost is around 1.45bar but this **** has started to happen again. Is it possible that after 2 years pump has failed again? I am really considering buying APR fuel pump but it is costly and I don`t want to spend money if it`s not necessary.

That is pretty much exactly the same as my car did with the stock map and a stage 1 map that I uploaded to the ecu.

I really am not convinced it is a fueling issue that I have, but for whatever reason the ecu thinks the car is lean at around 5500rpm (even the logs from the old and also the new lambda sensor showed the car as not being leak, which was backed up with the lambda sesnor used on the dyno when it was being mapped). but for some reason the ecu was adding 20% fuel and because of that it was tripping the lean throttle cut function.

OK thanks, please post back if you find a solution.

I am really at the end of my patience, there is always something wrong and giving me headache

Will do

Ok so today I went for a spin, this morning it was doing the same old thing in 4th at 5500rpm, it would drop the boost and splutter (not as bad as it used to, but still very noticeable and violent).

Anyhow I swapped the fpr to the 4bar one again from the other car, and managed to get back to the test track to do another couple of runs.

Only managed 2 runs, but both times got to 6000rpm in 4th before I ran out of space and no hint of it dropping boost or cutting the throttle now.

Sadly I didn't get a chance to log it at all today, to see what the fuel trims are doing.

So now I just need to workout if the problem is the injectors maxing out, or if it actually is a faulty 3bar fpr (I guess it's more likely the injectors as last time I tried the 4bar fpr it made no difference with the old fuel pump).

Hey your getting somewhere at least !!!

I've just ordered a Suction jet pump thing from the states for £21, £40 cheaper than TPS !!!

Had my mate do the engine running oil cap off thing today, and he reckons there is back pressure, which could explain where my oil is going.

All the breathers are clear now though so I don't know what that means exactly !!

Hey your getting somewhere at least !!!

I've just ordered a Suction jet pump thing from the states for £21, £40 cheaper than TPS !!!

Had my mate do the engine running oil cap off thing today, and he reckons there is back pressure, which could explain where my oil is going.

All the breathers are clear now though so I don't know what that means exactly !!

Maybe i'm not sure though.

I have just been out in the other vrs (which was mapped by jabba with the 4bar fpr fitted) with the 3bar fpr on it, and that is running fine, maybe a touch flat at 6000rpm in 4th but ran out of runway so can't be sure if it was a problem or not.

On the plus side, I now have a set of 4 brand new cupra R injectors sat infront of me (starting to think I might aswell have bought a cupra R instead lol).

As for yours having back pressure, if all the breathers are clear then I guess the jet suction pump thing "should" sort it, but prob would have been easier to just remove it and simplify the breather system and save some cash too ?

Good news cossie! maybe there is solution for our problem at last

I asked my colleague to check technical specs of the vrs and cupra r fuel pumps, then I will be sure if there is any difference but APR pump is still cheaper solution then cupra r. I think it`s around 350euro for the cupra r and 200euro for APR one.

It would be nice to repeat several times 4th gear@wot just to be sure.

Good news cossie! maybe there is solution for our problem at last

I asked my colleague to check technical specs of the vrs and cupra r fuel pumps, then I will be sure if there is any difference but APR pump is still cheaper solution then cupra r. I think it`s around 350euro for the cupra r and 200euro for APR one.

It would be nice to repeat several times 4th gear@wot just to be sure.

Yes it would be great to check 4th gear flat out a few more times before I say for sure that the issue has been fixed.

I will put the 3bar reg back in tomorrow with the new LCR injectors and see how it goes.

LCR injectors are 386cc@3bar, right? That is 23% more flow at 3bar then vrs injectors, you will install them without mapping it or? IIRC 25% is max what ECU can compensate..

LCR injectors are 386cc@3bar, right? That is 23% more flow at 3bar then vrs injectors, you will install them without mapping it or? IIRC 25% is max what ECU can compensate..

Yes they are 386cc@3bar, I am going to do some logging after I fit them, to see what the fuel trims are doing and I might be able to tweak / trim it a little with lemmiwinks which will save me having to get it remapped straight away.

If they are miles out, then I will have to remove them again and wait until it can be mapped properly.

The same things goes for using the 4bar fpr though, that is also going to make the fueling go a little crazy.

BTW it looks like the 4bar cupra R pump that's also listed for AUQ engines relates to the MK2 seat Toledo (from searching on google).

I saw that also, really confusion information are on web.

I have 4bar fpr with stock fuel pump, my multiplicative fuel trim with 3bar fpr where around +0.5% and now with 4bar are -12.5%.

I managed to get to 7000rpm in 4th earlier several times with no issues.

Fuel trims are going to between -10 and -15% now and on block 032 they were 0.8 and -4.7 after it was mapped, with the old 3bar fpr, and now today they are 0.4 and -14.8.

For the moment the car is running ok like that (showing 203 - 204 on the g/s which converts to about 250bhp) so it's making power

But.......... I've only done about 25 miles so I don't know if the fuel trims have fully settled yet and if it takes out much more fuel, will I run into issue's with the car thinking it's running too rich and pulling power again ?

Lemmiwinks won't connect for me, so I can't trim anything.

Nice info cossie :sun:

So my next step would be new and better flowing fuel pump in combination with 4bar fpr this should solve my problem.

You should drive it at least 100km to be 100% sure but you already know that

I think if you get system too rich code that ECU will put you in soft limp mode.

If I was you, I get it mapped ASAP!