[Dan_DJT]

Got a new 2019 RS3 Saloon with GPF at work and took it out for a drive today. Much quieter than my 2018 Saloon and the overall character of the car is tuned down. Was not as exciting to drive and quite disappointing.

Has anyone else driven a FL back to back with a GPF equipped car ?

[T-800]

Got a new 2019 RS3 Saloon with GPF at work and took it out for a drive today. Much quieter than my 2018 Saloon and the overall character of the car is tuned down. Was not as exciting to drive and quite disappointing.

Has anyone else driven a FL back to back with a GPF equipped car ?

Brian @fivepotfan told me the revised engine in 2019 cars has changed Cams & Pistons with a different compression ratio.
Glad I haven’t got one.

[Evil Diesel]

I am sure that, driven in isolation, it will seem like a rocket but driven back to back with a 67/18 plate car it will feel like a lemon. Big step backwards.

[Dan_DJT]

It does seem like a backwards step I agree. Hopefully with a bit of tuning some of the original magic can be found.

[Evil Diesel]

I totally agree - the mechanics of the car cannot have changed that much. Rip out the GPF (not sure where it sits but normally after the cat so a cat back system should do taking out the resonators with it) and a suitable remap.

 

How many new owners want to trash their warranty with a TD1 straight off the forecourt though? Audi will be clapping their hands with every one that gets done!

[terminator x]

GPFs / OPFs ruining all modern fast cars imho. Hard to love the new ones.

TX.

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[Dan_DJT]

Had a good look at the GPF(s) with the car on a ramp, there are two (one for each pipe as the downpipe splits post catalyst) and both have pressure and temperature sensors. I think there is scope to improve performance without removing them or maybe even use a higher flowing item.

[Evil Diesel]

I can't see that happening. They will have to go along with a map. Say goodbye to engine & exhaust warranty for what it is worth.

[Dan_DJT]

I can't see that happening. They will have to go along with a map. Say goodbye to engine & exhaust warranty for what it is worth.

That applies for all remaps whilst the car is in warranty tho to be fair. Lots of people want a remap and/or performance parts on new cars.

[terminator x]

That applies for all remaps whilst the car is in warranty tho to be fair. Lots of people want a remap and/or performance parts on new cars.

Won't pass a MOT either though (OPFs removed) so will need changing out every year?

TX.

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[Evil Diesel]

Not sure if it would fail - have the MOT rules changed for 2019 cars?

 

Even if so, it's a problem 3 years away.

[T-800]

Won't pass a MOT either though (OPFs removed) so will need changing out every year?

TX.

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GPF /PPF / OPF whatever you call them will be a fail on the MOT because the Tester (Audi dealer i'm talking about) will be required to do a 'Visual' check to make sure the 2 filters are there......

 

I doubt whether your normal MOT garage would be so strict.

[RS3Dell]

Any alterations to the exhausts system which alters the emissions is a failure.

As T-800 stated it's whether or not the Mot tester knows what there looking for or at.

Dell.

[Dan_DJT]

MOT station will never do a measure of particulates so assume it will be a visual check and maybe check for faults.

[Evil Diesel]

If any dash lights are lit then you are stuffed on an MOT. But for anyone unfortunate enough to be hit by the GP filter the Mot is 3 years away....

[Rooferman]

Got an STM decat for my gpf 2019, see what it does with a remap

[Fivepotfan]

Brian @fivepotfan told me the revised engine in 2019 cars has changed Cams & Pistons with a different compression ratio.
Glad I haven’t got one.

Strange that people haven't grasped the importance of this news.......

 

MRC have told me that the pistons and cams in the engines fitted with the GPF filters are different to the earlier cars. This changes the compression ratio which makes it easier for Audi to meet the newer regs....... the downside is it limits the scope for tuning and power on the 2019 cars is expected to be less than 2017/18 models. MRC have had a GPF car in for stage 1 mapping and it made 387ps stock and 452ps & 600nm tuned. This is way down on the usual 470 to 480ps normally seen on stage 1 tunes.  

Edited by Fivepotfan, 08 October 2019 - 03:02 PM.

[paulmc]

Strange that people haven't grasped the importance of this news.......

 

MRC have told me that the pistons and cams in the engines fitted with the GPF filters are different to the earlier cars. This changes the compression ratio which makes it easier for Audi to meet the newer regs....... the downside is it limits the scope for tuning and power on the 2019 cars is expected to be less than 2017/18 models. MRC have had a GPF car in for stage 1 mapping and it made 387ps stock and 452ps & 600nm tuned. This is way down on the usual 470 to 480ps normally seen on stage 1 tunes.  

I don’t think its that big of an issue, things change all the time people just find a way. MTR stage 1 is still getting 475ps from the OPF car, granted they usually get 480-490ps from non OPF. 

 

Bin the OPF and stage 2 tune will be the best way to compare the 2019 vs 2018 engine and determine if there is any tangible difference.

 

so much negativity everywhere.

 

Funny this, just the same response when CATs first came out. No-one would buy a catted car lol.

 

When CATS first came out there was outrage, likewise DPF, then torque monitoring when tuning ecu, then MG1 and MD1 etc etc, all of which has been overcome. Life and technology move on, embrace it overcome and enjoy the challenge

[Fivepotfan]

I don’t think its that big of an issue, things change all the time people just find a way. MTR stage 1 is still getting 475ps from the OPF car, granted they usually get 480-490ps from non OPF. 

 

Bin the OPF and stage 2 tune will be the best way to compare the 2019 vs 2018 engine and determine if there is any tangible difference.

 

so much negativity everywhere.

 

Funny this, just the same response when CATs first came out. No-one would buy a catted car lol.

 

When CATS first came out there was outrage, likewise DPF, then torque monitoring when tuning ecu, then MG1 and MD1 etc etc, all of which has been overcome. Life and technology move on, embrace it overcome and enjoy the challenge

I admire your positive attitude........its still a great car but I guess for many of us we have the expectation that with every iteration of a new model it should have superior performance when compared to it's predecessor (better handling, more power, perhaps even better mpg?) but this does not seem to be the case for the models fitted with GPF.

We have been spoilt with the previous models as they are well known for considerably exceeding the factory quoted power figures and zero to sixty times. It must have been tough for the Audi engineers to add the performance shackles to their gorgeous 5 cylinder masterpiece knowing that the inevitable battle with the forthcoming new Merc AMG 45S is on the horizon.

 

It will be interesting to see what the top tuners come up with for the 2019 car, they have the exhaust GPF to remove, two extra pressure sensors to map out, differences in the air intake pipes (emissions auxiliaries near the airbox are different) and the change in pistons and cams to contend with.  

Edited by Fivepotfan, 25 November 2019 - 01:34 PM.

[Dan_DJT]

I admire your positive attitude........its still a great car but I guess for many of us we have the expectation that with every iteration of a new model it should have superior performance when compared to it's predecessor (better handling, more power, perhaps even better mpg?) but this does not seem to be the case for the models fitted with GPF.
We have been spoilt with the previous models as they are well known for considerably exceeding the factory quoted power figures and zero to sixty times. It must have been tough for the Audi engineers to add the performance shackles to their gorgeous 5 cylinder masterpiece knowing that the inevitable battle with the forthcoming new Merc AMG 45S is on the horizon.

It will be interesting to see what the top tuners come up with for the 2019 car, they have the exhaust GPF to remove, two extra lambda sensors to map out, differences in the air intake pipes (emissions auxiliaries near the airbox are different) and the change in pistons and cams to contend with.

There are not any additonal Lambda sensors on a GPF car. There are two upstream and two downstream temp sensors. There is also a delta pressure sensor and associated plumbing.

Not all tuners are looking at removing the GPF, certainly not for a stage 1 tune.