RSPaul
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Another remapped dieselAs some of you know, I recently bought an A3 S-line TDi 170 Quattro to use as my everyday car - was putting loads of miles on the RS4 and averaging 20mpg was starting to bankrupt me.
Obviously I couldn't leave it standard, so I had Mihnea work his magic on it a couple of weeks ago and today I popped in to Surrey Rolling Road for a power run.
Results were 204.1 bhp and 312 lbs ft torque - quite impressive for an oil burner, although the torque has had to be limited as the (stock) clutch can't handle much more.
I won't get too anal about the fuel consumption (a la Jeffw  ) suffice to say getting more than double the RS4 is great!
I'll post up the dyno plot for those interested as its amazing how steep the torque curve is!
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Paz
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How does the Haldex system cope with the torque Paul?
Sounds like a stonkingly powerful mile-muncher.
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Mihnea
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Nice results Paul, post up the curve please
Paz, the Haldex handles the torque just fine, we've done a few TFSI S3s with uprated Sachs clutches that did around 460-480Nm of torque (340-350 ft-lbs) and no problems with the Haldex whatsoever 
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Paz
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Sounds like the latest Haldex system is much better than the old one.
I quite like the A3 2.0T Quattro . . .
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Mihnea
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| Paz wrote: | Sounds like the latest Haldex system is much better than the old one.
I quite like the A3 2.0T Quattro . . . |
The old haldex has never been a problem either, at least not that I can remember...
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Adam
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Nice figures Paul, looking forward to seeing the plots
My 170 Golf GT has the same engine
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graemep
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Had a A3 2.0 TDI as a courtesy car last week, and was pretty impressed with it as stock (not sure if it was the 140 or 170 model), so can only imagine how it would go with a remap.
I did think the one I had would have benefitted from being a quattro, when I gave it a bit of a blast on the raods near Knockhill..
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Nige
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Mihnea, can you remove the DPF (and get rid of the error code) on the 170tdi engine?
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jeffw
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Good result Paul...and mapped during a home visit at my House.....
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RSPaul
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| Mihnea wrote: | | Nice results Paul, post up the curve please |
Here you go....
There is a small improvement in response from low revs, but as I said before the torque has to be limited to preserve the clutch. The noticeable difference is how the car now pulls much more strongly through the rev range right through to 4.5k (it will go to 5k, but not much point!) whereas it used to feel as though the power was starting to tail off after about 3.5k before!
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Mihnea
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| Nige wrote: | | Mihnea, can you remove the DPF (and get rid of the error code) on the 170tdi engine? |
Yes I can
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RSPaul
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| graemep wrote: | Had a A3 2.0 TDI as a courtesy car last week, and was pretty impressed with it as stock (not sure if it was the 140 or 170 model), so can only imagine how it would go with a remap.
I did think the one I had would have benefitted from being a quattro, when I gave it a bit of a blast on the raods near Knockhill.. |
The haldex quattro system is a bit different in use compared to the "proper" permanent quattro that us RS/S owners are used to. It doesn't feel as secure on the road, it still pretty much feels like a front-driver most of the time (i.e. understeer) and only really becomes quattro when you lose grip at the front.
If you pull away quickly, you get a fraction of a second wheelspin and then it just grips and goes. I had a bit of fun on a wet roundabout last night where it went from understeer to oversteer and then gripping hard all inside a second or two!
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RSPaul
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| Adam wrote: | Nice figures Paul, looking forward to seeing the plots
My 170 Golf GT has the same engine |
Go on - you know you want too.....is it DSG? They can take more torque....
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Graham
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There is a tuned (DMS I expect) 335d going to VMAX (as well as a tuned 335i). I think I am going to get shown up by a diesel and not by a small margin!
Maybe K will let me get our 320d seen to by MRC one day.
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graemep
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| RSPaul wrote: | | graemep wrote: | Had a A3 2.0 TDI as a courtesy car last week, and was pretty impressed with it as stock (not sure if it was the 140 or 170 model), so can only imagine how it would go with a remap.
I did think the one I had would have benefitted from being a quattro, when I gave it a bit of a blast on the raods near Knockhill.. |
The haldex quattro system is a bit different in use compared to the "proper" permanent quattro that us RS/S owners are used to. It doesn't feel as secure on the road, it still pretty much feels like a front-driver most of the time (i.e. understeer) and only really becomes quattro when you lose grip at the front.
If you pull away quickly, you get a fraction of a second wheelspin and then it just grips and goes. I had a bit of fun on a wet roundabout last night where it went from understeer to oversteer and then gripping hard all inside a second or two! |
I'm used to the haldex on our S3 and the sensation you get when it starts to transfer power backwards, so agree with the comments - it was the one of the differences I noticed when I got the RS.
It did put a smile on my face when it was spinning it's front wheels coming off a wet roundabout. The S3 was very similar when the haldex controller popped. 
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Mihnea
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| Graham wrote: | There is a tuned (DMS I expect) 335d going to VMAX (as well as a tuned 335i). I think I am going to get shown up by a diesel and not by a small margin!
Maybe K will let me get our 320d seen to by MRC one day. |
Damn I don't have the dyno plots from the last 335D I did on the dyno, I was well impressed with the 343PS/720Nm it did... a decently tuned 335i can easily do 370 PS/540Nm... DMS claim 387 and 580Nm, I think they're a bit optimistic TBH...
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RSPaul
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| Mihnea wrote: | | Nige wrote: | | Mihnea, can you remove the DPF (and get rid of the error code) on the 170tdi engine? |
Yes I can |
What, if any, are the benefits in doing this, Mihnea? If you have to limit torque with the stock clutch, are you going to get much more power by not having the DPF?
Or do you just get a lot more smoke? (exhaust and clutch )
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Adam
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Manual Paul, didn't go DSG. One of these days I'll get it done but need an MRC map on the Cupra first 
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Mihnea
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Paul, no DPF means more power (not necessarily more torque, remember an ECU has RPM inputs and I can change what I want at the RPM I want: i.e. torque at low RPMs, power at high RPMs) and better fuel mileage because you'll be having lower backpressure in the exhaust and the engine will breathe more freely.
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jeffw
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Roughly how much more power. There must be a downside as well...?
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MarkB
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| jeffw wrote: | | There must be a downside as well...? |
Small children die
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jeffw
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Sadly that is true anyway
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RSPaul
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| Mihnea wrote: | | Paul, no DPF means more power (not necessarily more torque, remember an ECU has RPM inputs and I can change what I want at the RPM I want: i.e. torque at low RPMs, power at high RPMs) and better fuel mileage because you'll be having lower backpressure in the exhaust and the engine will breathe more freely. |
Hmm - thanks Mihnea, food for thought.... 
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Mihnea
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| jeffw wrote: | | Roughly how much more power. There must be a downside as well...? |
10 to 15 BHP more, and the downside is that the car might not pass an MOT anymore, I have no idea if the MOT check for the presence of the DPF or not...
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bneaves
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MOT does not cover DPF, the only thing you will need to be sure of is that it passes a free rev smoke test. Basically rev the car in neutral to max revs with full throttle, as a rough guide you should not see any visable smoke. Getting rid of the DPF will be the best thing you can do, although there is quite a lot to turn off in the cal to stop fault codes from the pressure sensor. (this measures the back pressure across the filter and if the pressure is too low it knows the filter is missing or broken)
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S4
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| RSPaul wrote: | | Mihnea wrote: | | Nige wrote: | | Mihnea, can you remove the DPF (and get rid of the error code) on the 170tdi engine? |
Yes I can |
What, if any, are the benefits in doing this, Mihnea? If you have to limit torque with the stock clutch, are you going to get much more power by not having the DPF?
Or do you just get a lot more smoke? (exhaust and clutch ) |
I have seen really good results with the DPF removed, they really seem to strangle the engine. Miltek even do a DPF bypass pipe now.
People has said they are getting a lot better fuel economy with it removed, but they have said the car is a lot more lively as well. around 230 some seem to have had. has to be mapped perfect, I am sure Mihnea can do this.
Darren
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jeffw
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I think 296BHP & 415ft/lb is enough for me on the A6.
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RSPaul
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I gave some thought to getting more power from the car shortly after I got it and concluded that there was no point - its never going to be an RS4 or S4, at the end of the day its my daily driver - and as it stands its quick enough (just) to have a bit of fun whilst still being refined and economical.
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MarkB
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| RSPaul wrote: | | its quick enough (just) to have a bit of fun whilst still being refined and economical. |
So when's it booked in to have the DPF removed?
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RSPaul
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| MarkB wrote: | | RSPaul wrote: | | its quick enough (just) to have a bit of fun whilst still being refined and economical. |
So when's it booked in to have the DPF removed? |
You know me too well.....but this time I will try and resist
Need to save a few quid for the next RS4 anyway....
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S4
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| jeffw wrote: | | I think 296BHP & 415ft/lb is enough for me on the A6. |
Jeff its not just power, everyone (well the 2.0 170) have said that the car is a lot better low down, pickup and everything with the DPF removed, lots.
and the MPG is well up as well.
Darren
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Mihnea
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Darren, Jeff doesn't care, he doesn't have a DPF on his A6
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jeffw
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News to me
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Paz
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The B8 A4 3.0 TDI Quattro Tiptronic has some tasty figures . .
240 PS & 370 lb/ft, 0-60 MPH in 6.7 sec, 30-50 MPH in 2.8 sec & 50-70 MPH in 3.8 sec (both in 3rd gear).
Weighs approx 1700 kg and will do 31 MPG round town and at least 40 MPG on a run.
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Jules
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zzzzzzzzzzzzzzzzzzzzzzzzzzzz
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Paz
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Up yours moob man!! 
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Graham
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3.7 to 60?? 60 what?
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Jules
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centimetres per hour
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Paz
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| Graham wrote: | | 3.7 to 60?? 60 what? |
Whaddaya mean dude?
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loomx
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6.7 to 60 seems pretty quick for 240bhp and 1700kg
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S4
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all is I am saying is get the DPF of the 170 2.0, get it mapped correctly (a lot of people cant do them they have problems with the light coming on) and they go really well.
Darren
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Graham
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| Paz wrote: | | Graham wrote: | | 3.7 to 60?? 60 what? |
Whaddaya mean dude? |
That's better
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