Hi,

 

During the infamous emission scandal of VAG, all cars in India had their (I'm guessing ECU) updated. This resulted in loss of power, but to compensate for lesser emissions and being more fuel efficient. This was around on 150k kms. And immediately I noticed that the car became very sluggish, but I can live with it (a remap would fix the job). But apart from that I also noticed that on full throttle, there's barely any power and the car accelerates slowly!. In mid range, it's still good enough. Full throttle is where it loses everything.

 

The car currently stands on 340k kms. The EGR and entire fuel system (common rail injection they say) was changed recentlu. Which includes injectors, pump, etc. So I don't think there's any problem with them.

 

2.0 TDI 4x2 (108 bhp & 250 nm)

Edited 2 December, 20214 yr by Nimit

Has the fuel filter been changed recently?

Edit: Are there any warning lights up on the dash?
Has the car been checked for fault codes?
Could it be a problem with the throttle position sensors?
Has the air filter been changed?

Edited 2 December, 20214 yr by Urrell

6 minutes ago, Urrell said:

Has the fuel filter been changed recently?

Edit: Are there any warning lights up on the dash?
Has the car been checked for fault codes?
Could it be a problem with the throttle position sensors?
Has the air filter been changed?

Nope, nothing on the dash. Yes, I checked the car multiple times for any fault code, no luck. Do I need to manually check the throttle position sensors? I never took a look at them.

 

Apart from that, all filters were recently changed and on schedule.

 

 

Nimit, If you are 100% assured the Fuel filter has been changed, then the re-map is the way to go.

 

On 02/12/2021 at 23:03, Carlodiesel said:

Nimit, If you are 100% assured the Fuel filter has been changed, then the re-map is the way to go.

 

I am quite skeptical of a remap, given the car has done almost 350k kms and I am not sure if the engine / turbo would hold up the increased power. Also, is there any connection between the throttle and the emission update to the ECU they did?

Just drive the car as normal, just because you have 20+ more HP you don't need to use it.

Think of it as a MPG update.

 

 

"Also, is there any connection between the throttle and the emission update to the ECU they did?"

More than likely.

 

I'd be tempted to fit a new fuel filter in, just in case they didn't. 

If that don't help, go for the remap.

21 hours ago, Carlodiesel said:

Just drive the car as normal, just because you have 20+ more HP you don't need to use it.

Think of it as a MPG update.

 

 

"Also, is there any connection between the throttle and the emission update to the ECU they did?"

More than likely.

 

I'd be tempted to fit a new fuel filter in, just in case they didn't. 

If that don't help, go for the remap.

I actually do the basic service myself, hence there's no doubts with the filters. I am very tempted for a remap as cars that cost 1/3 of the Yeti are now better at acceleration than the Yeti!

2 hours ago, Nimit said:

I actually do the basic service myself, hence there's no doubts with the filters.

How did you purge the air out of fuel filter after changing it before restarting.

At 1/4 of your mileage my car with the same engine as yours would not pull the skin off a rice pudding, I was driven to action when the engine started shuddering on shutdown, a sign that the inlet tract and butterfly  was clogged with clag from the excess of EGR after the emissions fix.

 

It was indeed totally clagged up and had made the vehicle totally asthmatic, it was transformed after carefull cleaning of the throttle body and inlet tract.

 

I then fitted an EGR emulator/simulator to stop any recycling of the gases so it won't crud up again, I also had a remap to an alleged 184hp which is probably the standard factory 170 hp map, it now has the mid range overtaking punch that it always lacked.

 

Given your high mileage you should definitely have a look and declag its respiratory tract if needed.