Ok, will wait.

Ok, will wait.

Oh? Another Tamperelainen? We really need a Tampere meet

I was waiting for you to notice. 

Had my car remaped today cr 184 dsg

Car made

222bhp

485nm 

 Does that seem OK 

1 hour ago, Tosh248 said:

Had my car remaped today cr 184 dsg

Car made

222bhp

485nm 

 Does that seem OK 

Which company remapped it? 

9 hours ago, Towelie said:

Which company remapped it? 

Acr tuning carluke

1 hour ago, Tosh248 said:

Acr tuning carluke

Looks like you’ve got really close to their quoted max BHP output which is good. Main thing is >>> how does the car feel now with the new map? 
 

For comparison my VRS 184CR made on rollers 209bhp / 490Nm with a DTUK box (miles off their apparent output) and now makes 231bhp / 516Nm with Revo and the difference is night and day! 

2 hours ago, Towelie said:

Looks like you’ve got really close to their quoted max BHP output which is good. Main thing is >>> how does the car feel now with the new map? 
 

For comparison my VRS 184CR made on rollers 209bhp / 490Nm with a DTUK box (miles off their apparent output) and now makes 231bhp / 516Nm with Revo and the difference is night and day! 

Night and day feels really good 

Had my last Vrs Tdi remapped and it did make a real difference to the performance. However, there is a real risk of dpf issues. The car runs richer after the remap and tends to block the dpf. The performance of the car will dip dramatically if this happens. I wouldn't consider a remap of a Tdi unless you go with a dpf delete as well. I'm not mapping my new car. Too many issues with the last one after it was tuned.

In terms of an exhaust system for the Octavia from Fox Exhaust Systems, it is about 895 Euros + your import tax + postage......looks like lovely pieces of equipment though.....

https://www.fox-sportauspuff.de/store-products.php?pName=skoda-octavia-5e-rs-tdi-final-silencer-rightleft-outlet-in-the-original-tail-pipes-p-15666&language=en&cName=car%2Fskoda%2Foctavia-c-1_429_433

 

21 hours ago, 48scottie said:

Had my last Vrs Tdi remapped and it did make a real difference to the performance. However, there is a real risk of dpf issues. The car runs richer after the remap and tends to block the dpf. The performance of the car will dip dramatically if this happens. I wouldn't consider a remap of a Tdi unless you go with a dpf delete as well. I'm not mapping my new car. Too many issues with the last one after it was tuned.

I can see this happening, especially with the extra low-down grunt from a low-RPM torque increase.

Regular caning might help.

On 29/07/2021 at 12:18, 48scottie said:

Had my last Vrs Tdi remapped and it did make a real difference to the performance. However, there is a real risk of dpf issues. The car runs richer after the remap and tends to block the dpf. The performance of the car will dip dramatically if this happens. I wouldn't consider a remap of a Tdi unless you go with a dpf delete as well. I'm not mapping my new car. Too many issues with the last one after it was tuned.

I had a remapped 184 vRS, and whilst it will produce more soot, the regen will simply be more frequent. I installed the dpf app and monitored my car over 18 months, never had a issue with blocked dpf. I didn't notice and obvious change in the distance between regens of mapped v unmapped. Just do it, unless your mileage is very low and stop start you'll be fine. 

1 hour ago, stever750 said:

I had a remapped 184 vRS, and whilst it will produce more soot, the regen will simply be more frequent. I installed the dpf app and monitored my car over 18 months, never had a issue with blocked dpf. I didn't notice and obvious change in the distance between regens of mapped v unmapped. Just do it, unless your mileage is very low and stop start you'll be fine. 

 

what mileage is your car and whats the DPF ash level at?

I've just installed a Darkside Development DPF straight through kit, remapped by West Yorkshire Tuning. It's juddering at around 2100-2400rpm 

17 minutes ago, smokeyshiva said:

I've just installed a Darkside Development DPF straight through kit, remapped by West Yorkshire Tuning. It's juddering at around 2100-2400rpm 

Needs the map tweaking slightly.

27 minutes ago, Ecomatt said:

Needs the map tweaking slightly.

What makes you say this? 

51 minutes ago, tunedude said:

 

what mileage is your car and whats the DPF ash level at?

I got rid at 80k about 18 months ago. It was around 2/3 full at that point according to the ecu. 

I should add that occasionally under long heavy loads, the EGT will exceed the rehen threshold, which triggers the ecu into regen mode. From memory, it was around 500°C, and only happened on long uphill drags with passengers. 

1 hour ago, smokeyshiva said:

What makes you say this? 

If it jis uddering then clearly something is not right with the software. Unless it is clutch judder.

1 hour ago, stever750 said:

I should add that occasionally under long heavy loads, the EGT will exceed the rehen threshold, which triggers the ecu into regen mode. From memory, it was around 500°C, and only happened on long uphill drags with passengers. 

 

Isn't that simply a passive regeneration?

 

I'm not sure that the ECU does anything when that happens, it certainly wont add post combustion fuelling as it would in normal regen mode, the exhaust gases are hot enough to burn the soot  on their own.

 

Maybe it runs some EGR to keep the temperature of the fire within safe limits.

 

Its a very good thing and not something to be wary of.

 

I hope that someone will prove me wrong but I dont think the ECU takes into account passive regens when doing its calculation of soot loading, I can drive 200 miles towing a seriously overloaded removals trailer with a frontal area like a barn door at motorway speeds, full throttle up the very long autoroute inclines in Northern France, the oil temperature is high so the DPF must be above passive regen temps yet 30 miles after arriving at my destination its doing an active regen once again.

 

I have scanned the VCDS DPF data before and after one of these runs and the calculated soot load kept going up the same as if I were bimbling around town.

Yes, that's a passive regen. Largely irrelevant, the car will initiate active regens when it thinks it needs to. Changes in soot = changes in exhaust pressure differential so no reason why remap will change DPF other than total life expectancy, but hey remap gives big improvements don't come for free! 

 

Edit after re reading 

A so called passive regen is the same as an active regen; the important threshold is the DPF temp, doesn't matter whether it happens from normal driving or a fuel cycle; both have the same result, an increase in the DPF temp. 

Edited 21 August, 20214 yr by stever750

The EA288 motor has various stages of DPF regeneration :

• Passive regeneration ( when the engine is up to temp and the car is used mostly on a motorway at a steady speed - the user will not normally notice this regeneration)

• Heat-up phase - ( when the engine is cold - the ECU goes in to a pre programmed heat up phase to bring the DPF up to temp quickly - identified by the higher idle after startup )

• Active regeneration ( The ECU measures the back pressure or soot loading of the DPF and goes in to active DPF regeneration mode - normally identified by a raised idle speed even when the engine is at full temperature )

• Regeneration trip by customer ( Customer must go for a drive to force the regeneration to complete if the DPF light comes on in the dashboard )

• Service regeneration ( Forced DPF regeneration by connecting the dealers diagnostic computer when normal regeneration is not possible )

• Mileage regeneration ( as a safety backup - the ecu will perform an active regeneration every 465 miles regardless of the soot loading of the DPF if it has not registered a COMPLETE regeneration cycle in the last 465 miles )

21 hours ago, Ecomatt said:

The EA288 motor has various stages of DPF regeneration :

• Passive regeneration ( when the engine is up to temp and the car is used mostly on a motorway at a steady speed - the user will not normally notice this regeneration)

• Heat-up phase - ( when the engine is cold - the ECU goes in to a pre programmed heat up phase to bring the DPF up to temp quickly - identified by the higher idle after startup )

• Active regeneration ( The ECU measures the back pressure or soot loading of the DPF and goes in to active DPF regeneration mode - normally identified by a raised idle speed even when the engine is at full temperature )

• Regeneration trip by customer ( Customer must go for a drive to force the regeneration to complete if the DPF light comes on in the dashboard )

• Service regeneration ( Forced DPF regeneration by connecting the dealers diagnostic computer when normal regeneration is not possible )

• Mileage regeneration ( as a safety backup - the ecu will perform an active regeneration every 465 miles regardless of the soot loading of the DPF if it has not registered a COMPLETE regeneration cycle in the last 465 miles )

In 12 months of monitoring mine continuously, I make the following observations:

 

#1 passive regen, happened very very rarely, and only on long uphill sections where the EGT was sufficiently raised for the ECU to recognise the the soot was being burnt (remember, the ECU does not measure soot directly, it infers it from the pressure differential across the dpf, and throttle position: drive harder = more soot, an Italian tune up NEVER took my engine into passive regen)

#6 Occasionally mine would regen at over 500 miles, usually at 300 though. I never noticed a hardstop at 465. 

 

If you're concerned, search the forums for DPF soot app, it's free to download, and has multiple Brisky users judging by the length of the threads on it. In practice, the only way you'll choke your dpf is by constantly interrupting the active regen cycle, e.g. short start stop journeys. Once it's started, just let the car idle, it will complete the cycle, and faster than if you're driving it. The biggest problem is the accumulation of ash, and nothing stops that. A dpf has a lifespan of around 80k miles before it will have to be removed and cleaned or replaced.

On 22/08/2021 at 21:41, stever750 said:

A dpf has a lifespan of around 80k miles before it will have to be removed and cleaned or replaced.

 

I'm not sure about other owners, but I'm at 96k on the original dpf and the app shows about 40% ash. 

 

80k seems a bit low to me, but maybe it depends on driving style. My car was 66k when I purchased at 3 years old and 32% ash level. 

 

Car was remapped approx 1k miles ago, so will see how quickly my dpf fills up now.

That's low! Mine was about 75% full at 75k miles. The problem is the ecu is making an indirect calculation of the values, the only true indication of a full DPF is it simply blocks up and the engine will go into limp. This is one reason why I'll never own a diesel engined car again, hopefully.