JB4 / tuning on european cars with GPF / PPF / OPF

[STINGERFIN]

Hi all,


just registered to start a thread on the European Stingers. The community seems great and maybe I can get some help.

In Europe starting from the model year 2019 we have this lovely thing on every petrol car which is called petrol particulate filter (or GPF, or OPF, many names for it). Basically it's an extra filter that reduces emissions. What also happened that the cars with the filter got quoted 0-62MPH time reduced from 4.9 sec to 5.5 sec + top horsepower few less than cars without this filter. The filter is a mechanical thing but it does feel like there is a lot of ECU changes as well to reduce emission and power. The biggest problem with the GPF is that quite often you can feel the car burning the particles on the filter and acceleration can feel sluggish when this is happening. There are also many cars which have had the warning light come on telling the filter hasn't been cleaner and you need to continue driving. This happens even when the normal drive includes 30 miles of highway to both directions. That should be optimal for the filter but still, the car struggles to clean it.

I'm looking for more power to the car but as I'm no expert on engines I'm also worried how would JB4 affect the GPF. I would expect the emissions to grow and maybe block the filter quicker or cause some other problems. Or is the map somehow leaner that it would actually be alright? Maybe someone could help (Terry ?-)). The stock tune on the GPF cars also has a slightly higher boost if I have understood correctly. I also don't want to break anything by over boosting.

Removing the GPF is something I would do instantly if possible. I have learned this throws CEL if no ECU changes are done. And I haven't found a single company in Europe who knows to remove the GPF from the ECU. For example, Quicksilver Exhaust would be perfect. Sadly I live in EU, so things are more difficult for us petrolheads here

I would appreciate if anyone can give any hints on how to remove the GPF and/or use something like JB4 safely. The car just deserves the extra oomph

 

[Terry@BMS]

No issues with the GPF from the JB4 perspective, but we can't comment on or help you remove or bypass it, as that's illegal.

 

[MikeSutton]

Hi all,


just registered to start a thread on the European Stingers. The community seems great and maybe I can get some help.

In Europe starting from the model year 2019 we have this lovely thing on every petrol car which is called petrol particulate filter (or GPF, or OPF, many names for it). Basically it's an extra filter that reduces emissions. What also happened that the cars with the filter got quoted 0-62MPH time reduced from 4.9 sec to 5.5 sec + top horsepower few less than cars without this filter. The filter is a mechanical thing but it does feel like there is a lot of ECU changes as well to reduce emission and power. The biggest problem with the GPF is that quite often you can feel the car burning the particles on the filter and acceleration can feel sluggish when this is happening. There are also many cars which have had the warning light come on telling the filter hasn't been cleaner and you need to continue driving. This happens even when the normal drive includes 30 miles of highway to both directions. That should be optimal for the filter but still, the car struggles to clean it.

I'm looking for more power to the car but as I'm no expert on engines I'm also worried how would JB4 affect the GPF. I would expect the emissions to grow and maybe block the filter quicker or cause some other problems. Or is the map somehow leaner that it would actually be alright? Maybe someone could help (Terry ?-)). The stock tune on the GPF cars also has a slightly higher boost if I have understood correctly. I also don't want to break anything by over boosting.

Removing the GPF is something I would do instantly if possible. I have learned this throws CEL if no ECU changes are done. And I haven't found a single company in Europe who knows to remove the GPF from the ECU. For example, Quicksilver Exhaust would be perfect. Sadly I live in EU, so things are more difficult for us petrolheads here

I would appreciate if anyone can give any hints on how to remove the GPF and/or use something like JB4 safely. The car just deserves the extra oomph

Hi, I have a Stinger 2.0L GDi petrol (quoted 0-60 5.8 sec) which has done just under 5,000 miles since I bought it new last September. I'm in the UK and on 2 occasions the PPF light has appeared on the dashboard. Prior to the light appearing I had noticed a marked increase in mpg and a definite change in the way it drives - I usually get around 33/34 so I duly followed the handbook instructions and drove the required distance to clear it and mpg returned to normal both times
However, on a recent 500 mile round trip mostly on motorways and fast A roads I managed to get 45mpg on the outbound leg but only 28 on the return again noticing a change in both driving characteristics and reduced mpg. The PPF light however has not come on so I took it to my Kia dealer who, after contacting Kia technical dept states that my car is not fitted with a PPF!!???
My question is, if it doesn't have a PPF how can the light come on and how can it have cleared itself TWICE?
I know this doesn't answer your query but it may shed some light on an issue for others.
As for removing the PPF, certainly in the UK the vehicle would fail an MOT test when due at 3 years old but not sure about anywhere else in Europe (sadly we're out of the EU in a couple of months)
Mike Sutton.

 

[STINGERFIN]

It depends on the model year if you have a PPF or not. I have understood cars with model year from 2019 have this. If your car has stayed at the dealers for a year before you bought it, then maybe you might not have it. As the dash shows the lit light for it I believe the dealer is wrong.

There are some threads on the PPF issues around the internet. Few people see the light and experience rough behavior from the engine and increased mpg. I have the issue as well. I had some work done to my car during spring and warranty which made the issue less. There was an update to the ECU and they also sand-blasted the PPF empty. I have the 3.3l so might be only an issue on that motor.

I'm still trying to figure out the best tuning options for the car. the PPF is making the acceleration behave differently depending on if it's being cleared or not. I do not like this non-linear behaviour on the car. So either a tune that makes life for PPF easier or a solution to delete it would be preferred. It makes me a bit crossed that some other cars sold during the 2019 (the model year 2018) do not have this issue. When I test-drove and bought the car it was MY2018 and I wasn't aware of the PPF on my car and it issues until I had roughly 2,500 miles on the clock