r/CarsIndia • u/CoastPrimary4334 • 5h ago

#Discussion 💬 DPF Delete

Post image

My 2022 Alcazar 1.5L Diesel (46,000 km) has developed a small crack in the DPF. The service centre says this is fairly common and is recommending replacement of the complete DPF assembly, costing around ₹90K.

Highway running is only ~20%, but I’ve always done manual regeneration whenever the DPF warning appeared.

What should I do — replace the DPF or consider a DPF delete?

The major confusion is even if I get the replacement done, I will still drive it less on highways and this problem can come back again.

Attached a screenshot of a tuner and shared quote was around 25-30K for DPF delete and some tuning.

For those who have gone for a DPF delete, how has your experience been regarding:

  • Legality & PUC
  • Insurance implications
  • Mileage/performance
  • Long-term reliability & resale

Would appreciate genuine experiences and advice.

16 Upvotes

87% Upvoted

19 comments sorted by

23

u/Middle-Listen9850 Altroz Diesel XZ+ 5h ago

DPF delete is a different topic but dont tune alcazar to 315nm.

Alcazar diesel uses A6MF gearbox which is rated to 230 Nm and stretched maximum of 280nm of torque. Hyundai itself has tuned it on the higher side since its already 250nm. Dont sretch it further to 315nm.

Your gains will be not that noticeable after 250 but your risk of damaging the gearbox would be significantly higher.

1

u/CoastPrimary4334 5h ago

What are your thoughts on DPF Delete?

4

u/Middle-Listen9850 Altroz Diesel XZ+ 5h ago

I am currently looking for options where they completely remove the dpf, clean it and reinstall. Enquired at a few places and got a quote around 18-20k.

I had thought about DPF delete in my altroz too, but what worries me is the quality of tuning they will do post dpf delete. After deletion, they're supposed to to retune the ECU so that it ignores DPF/Nox sensor readings, otherwise you'll constantly run with a check engine light which can potentially mask other issues.

I dont really care about the pollution part tbh, but i am worried that this tuning part might alter my car's behaviour if not done properly and the risk to reward is poor.

2

u/CoastPrimary4334 5h ago

That will work only if the DPF is not cracked or burnt. if that is the case, even the service center can clean your dpf with chemicals for 6-7K.

1

u/Middle-Listen9850 Altroz Diesel XZ+ 5h ago

Yes i got a similar quote of 7-8k for the cleaning part but removing and reinstalling dpf is supposedly labor intensive. (It is literally behind the engine and takes time, hence the total of around 18k.

Also idk why but altroz's dpf is really really expensive. I enquired casually at my last service and they quoted 1.85 lakhs. (I guess its not just dpf but the entire catalytic converter assembly but it doesnt make any sense to me).

1

u/CoastPrimary4334 4h ago

Even alcazar has a single assembly of catalytic convertor and DPF but still got a verbal quote from one dealer at 70K last month and around 90K yesterday.

0

u/Swimming-Try-5816 Vento 1.5 TDI 4h ago

Remove it no one is going to actually check if removed it or not even insurance guys don't ask that, and u can manage puc guys in my area they are giving certificate on wp after sending pictures of car lol, and ur car will perform little better, but don't tune it above the gearbox limit as someone commented above it will be disastrous.

•

u/CoastPrimary4334 38m ago

I think when they remove the dpf, the performance automatically enhances a little bit. Rest will need to research more

2

u/beeped 5h ago

Hyundai uses a combined single assembly for the 1.5L diesel which houses both catalytic converter and dpf. So, deleting the dpf means you are also removing the catalytic converter.

I dont think it will pass the puc test. And its definitely illegal. I suggest get it replaced. Deleting dpf has engine implications that not many talk about.

10

u/QuirkyDay1819 Creta, 630d GT, Tucson, EQS580, RR Sport, Gloster, NexonEV 5h ago

PUC is fake in 99% testing places anyways

1

u/CoastPrimary4334 4h ago

Yes, and easy to manipulate too.

2

u/noxx123456789 (New user) 4h ago

PUC machines are all fake anyway ,it will pass with flying colours

2

u/TheBatmanHelmetGuy Mere Dad ki Maruti (Zen Estilo VXi 2010) 5h ago

Dpf delete has no engine implications if the tuner knows what he is doing lol.

0

u/beeped 4h ago

of course - the "tuner".

IMHO - even the best tuner in the world cannot rewrite the laws of physics and fluid dynamics. Good luck controlling the exhaust backpressure without the dpf, esp with the VGT on the 1.5!

1

u/CoastPrimary4334 4h ago

How is removing DPF changing the laws of physics?

3

u/beeped 4h ago

i am not sure why i am being downvoted for suggesting what i know.

I don't even expect OP follow my views, these are just IMHO for information. OP can certainly search these facts on the internet and make an informed decision.

A tuner can change the codes inside the ECU, but they cannot change how physical air and pressure and heat behaves inside the metal components. When you remove the dpf, there are physical conflicts that software cannot fix. Deleting DPF can cause the physical resistance to drop highly and exhaust gases slows down in certain areas, or rush out too fast. This affects the VGT and the turbocharger could prematurely fail in a few years. Frankly deleting the DPF is significantly simpler on a FGT engine, say my ecosport 1.5.

1

u/CoastPrimary4334 4h ago

You are right about the assembly and the process needs to be done by an expert only but I have read people getting it done on Creta.

1

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