Skoda Yeti 170 elegance manual

Can any one help me or have an opinion about the DTUK  CRD2+ box as i dont feel confident about going under the engine as I  have the off road kit fitted and only want the box in for when towing my caravan.

thanks in advance

Cyberseadog OAP

I've got the CRDt+ fitted, it's an excellent piece of kit, I know some have managed to connect the boost sensor from the top but I had to go from underneath.

One thing to consider is, the box allows you to switch back to factory settings while still fitted, in effect switching the box off. So once you've got it fitted you can switch back to standard if you don't want to use the extra bhp and torque all the time.

Skoda Yeti 170 elegance manual

Can any one help me or have an opinion about the DTUK  CRD2+ box as i dont feel confident about going under the engine as I  have the off road kit fitted and only want the box in for when towing my caravan.

thanks in advance

Cyberseadog OAP

That's the one I was supplied when I asked for the CRDe (economy) box.

Power is certainly up .....economy, well the readout (range/trip) combined give initially the impression of fabulous economy but once the tank gauge starts to drop and you get to say, half way empty, the 'range' is way greater than the distance ( 'trip' ) and the closer to empty the closer you get to a more realistic figure.

All told it's no worse on economy but much more power.

There's a post I just added to the Octavia forum on this subject where the DTUK rep suggested removing the turbo link on a CRDT+ (power version) and just leaving the common rail link attached which is effectively what we have........now that IS odd.

To me, the ? is what does the turbo link do if it's suggested not using it?

That's the one I was supplied when I asked for the CRDe (economy) box.

Power is certainly up .....economy, well the readout (range/trip) combined give initially the impression of fabulous economy but once the tank gauge starts to drop and you get to say, half way empty, the 'range' is way greater than the distance ( 'trip' ) and the closer to empty the closer you get to a more realistic figure.

All told it's no worse on economy but much more power.

There's a post I just added to the Octavia forum on this subject where the DTUK rep suggested removing the turbo link on a CRDT+ (power version) and just leaving the common rail link attached which is effectively what we have........now that IS odd.

To me, the ? is what does the turbo link do if it's suggested not using it?

I think in the thread your talking about they were trying to identify a running issue? I've had the fuel only boxes and this is much better. I'll try and find my rolling road report but with the boost increase it shows a very smooth curve.

Give Andrew a call at dtuk and ask his advice. If you are worried about access to the boost pressure sensor then another option would be to get the CRDe box as that only needs the common rail sensor lead connecting which is under the top engine cover on the left hand side and literally takes 2 minutes to fit so you don't need to go grovelling down the front to connect the boost pressure sensor. The top engine cover just pulls off -just give it a tug upwards starting at the front, test it first by gently pulling upwards to find where the attachment lugs are then pull upwards by where they are located and the cover just pops off. Once fitted you won't want to take it off but don't forget to tell your insurance company you've got one. The CRDe should cost less to add to your insurance than the others too.

Seeing the CRDe was the one I ordered but a CRD2+ was delivered it would seem the latter has replaced the former.

Either way it will give a power boost and maybe a slight economy boost.

Has anyone got any dyno results of a CRD2 box on a CR170 engine ?

That's the one I was supplied when I asked for the CRDe (economy) box.

Power is certainly up .....economy, well the readout (range/trip) combined give initially the impression of fabulous economy but once the tank gauge starts to drop and you get to say, half way empty, the 'range' is way greater than the distance ( 'trip' ) and the closer to empty the closer you get to a more realistic figure.

All told it's no worse on economy but much more power.

There's a post I just added to the Octavia forum on this subject where the DTUK rep suggested removing the turbo link on a CRDT+ (power version) and just leaving the common rail link attached which is effectively what we have........now that IS odd.

To me, the ? is what does the turbo link do if it's suggested not using it?

there are 3 kits

CRD2/CRDE which connects to the common rail only

CRDT (+) which connects to the common rail plus boost,

The reason why we have asked Martin to remove the boost connection is to see if running a common rail only connection achieves what he wants.

If anyone is looking for a simple plug in and plug out then the CRD2/CRDE is the option to choose, the CRDT+ (common rail plus boost) does involve a little work to access the boost connection.

Has anyone got any dyno results of a CRD2 box on a CR170 engine ?

we've only even dyno'd the 170 with the CRDT, which achieve 220/225bhp.

The only vehicle we have dyno'd back to back (common rail v common rail plus boost) was a 1.9cdti vauxhall astra.

Common rail only produced 205bhp from 148, where as the common rail plus boost produced 215bhp.

there are 3 kitsCRD2/CRDE which connects to the common rail onlyCRDT (+) which connects to the common rail plus boost,The reason why we have asked Martin to remove the boost connection is to see if running a common rail only connection achieves what he wants.If anyone is looking for a simple plug in and plug out then the CRD2/CRDE is the option to choose, the CRDT+ (common rail plus boost) does involve a little work to access the boost connection.

Thanks Andrew.....could you say why mine goes through periods of 'surging' cruising at 1750rpm/90kph using cc on dread flat roads?

Is this common?

we've only even dyno'd the 170 with the CRDT, which achieve 220/225bhp.

The only vehicle we have dyno'd back to back (common rail v common rail plus boost) was a 1.9cdti vauxhall astra.

Common rail only produced 205bhp from 148, where as the common rail plus boost produced 215bhp.

Thanks for the quick response

 

I have 2 concerns about running those sorts of figures, wonder if you can comment:

 

1) Clutch slip & Haldex reliability. I've had 3 previous PD130 engined cars, and on each I had to get the map (remap) tweaked to reduce the torque peak and stop the clutch slip. How does a CR170 - coupled with Haldex unit in my Yeti - cope with the kinds of torque figures generated from your box ? Only on 36k miles now but intend to keep to 100k plus, and don't want any worries about clutch clip or Haldex abuse.

2) DPF. Most Stage 1 remaps on the CR170 tend to be limited around 205bhp, going beyond that requires DPF removal as things start to get a little smoky. Remaps have always been considered to have finer control over tuning and smoke levels than a plugin box, so I'm struggling to believe that a tuning box generating 220/225bhp will run happily with a DPF, without it regenerating all the time ?

 

I'm not trying to slate the product by the way, am genuinely interested. I am on the verge of getting a remap, but the feedback I've read in other threads about your boxes has aroused my interest - had always dismissed tuning boxes in the past. 

 

I had my Mk 1 Fabia vRS remapped and it too would slip the clutch if you used the available torque - until I had an uprated clutch fitted...

 

The CR170 Yeti I have driven with the CRD-T fitted was on the 'as received' standard map setting and is very impressive but with no sign of clutch slip. Pulls really strongly from 1700rpm right up to the red line. Obviously you don't get something for nothing - use the power and the real world MPGs are similar to no 'box installed. Don't use the power and the MPG is better by 1-2 MPG.

 

Only down side is the Maxidot MPG error increases although range appears pretty much the same.

Thanks for the quick response

I have 2 concerns about running those sorts of figures, wonder if you can comment:

1) Clutch slip & Haldex reliability. I've had 3 previous PD130 engined cars, and on each I had to get the map (remap) tweaked to reduce the torque peak and stop the clutch slip. How does a CR170 - coupled with Haldex unit in my Yeti - cope with the kinds of torque figures generated from your box ? Only on 36k miles now but intend to keep to 100k plus, and don't want any worries about clutch clip or Haldex abuse.

2) DPF. Most Stage 1 remaps on the CR170 tend to be limited around 205bhp, going beyond that requires DPF removal as things start to get a little smoky. Remaps have always been considered to have finer control over tuning and smoke levels than a plugin box, so I'm struggling to believe that a tuning box generating 220/225bhp will run happily with a DPF, without it regenerating all the time ?

I'm not trying to slate the product by the way, am genuinely interested. I am on the verge of getting a remap, but the feedback I've read in other threads about your boxes has aroused my interest - had always dismissed tuning boxes in the past.

You're bound to be sceptical and rightly so, we've tuned 1000s of these engines now with the crd2 and the CRDT and it amazes me that we haven't had any dpf related issues reported from customers, I've even had boxes sent back to us from customers who've transferred the box to another car who have ran the box on us 3. Something I recommend not doing regularly..

We have several 170 dyno sheets available, I'm sure you'll find our own TT TDI 170 on this page

http://www.diesel-performance.co.uk/rolling_road_graphs.php

And I have another supplied by another tr customer who dynod his car in Lancashire somewhere..

We've recently released the updated CRDT+ system which uses updated electronics and were able to import the files/ data from the previous CRDT into the programming interface without issue, one thing we did see on our own mk3 2.0 TDI 184 was that the same software used in the CRDT+ produced more power and torque than the old CRDT box ...

Also when we've driven the car back to back with the old and new box it defiantly feels sharper to drive. With all new tech you need to "find your feet" and we've conducted hours and hours of testing on various cars and have even contacted several previous customers and have replaced their CRDT with the newer CRDT+ and all have reported that their car responds a lot better..

This is partly then reason I've asked Martin to try running his box without the boost sensor installed as if the new box is producing more power and the files are actually doing a touch more than they were in the old CRDT then this maybe the cause of his lack of mpg gains, or there again his car maybe the 1 out of 100 that just doesn't like our box.

I hope I'm making sense, if not then ask away and I'll try to answer in as clear a manner as

Possible

You're bound to be sceptical and rightly so, we've tuned 1000s of these engines now with the crd2 and the CRDT and it amazes me that we haven't had any dpf related issues reported from customers, I've even had boxes sent back to us from customers who've transferred the box to another car who have ran the box on us 3. Something I recommend not doing regularly..

We have several 170 dyno sheets available, I'm sure you'll find our own TT TDI 170 on this page

http://www.diesel-performance.co.uk/rolling_road_graphs.php

And I have another supplied by another tr customer who dynod his car in Lancashire somewhere..

We've recently released the updated CRDT+ system which uses updated electronics and were able to import the files/ data from the previous CRDT into the programming interface without issue, one thing we did see on our own mk3 2.0 TDI 184 was that the same software used in the CRDT+ produced more power and torque than the old CRDT box ...

Also when we've driven the car back to back with the old and new box it defiantly feels sharper to drive. With all new tech you need to "find your feet" and we've conducted hours and hours of testing on various cars and have even contacted several previous customers and have replaced their CRDT with the newer CRDT+ and all have reported that their car responds a lot better..

This is partly then reason I've asked Martin to try running his box without the boost sensor installed as if the new box is producing more power and the files are actually doing a touch more than they were in the old CRDT then this maybe the cause of his lack of mpg gains, or there again his car maybe the 1 out of 100 that just doesn't like our box.

I hope I'm making sense, if not then ask away and I'll try to answer in as clear a manner as

Possible

 

Thanks for taking the time to reply.

 

From what I've read on your site, the CRDT comes with 4 selectable maps.

Can you give any information on the characteristics of each of these maps ?

And is each map then tweakable, not quite sure how it works

 

And do you have figures for what levels of boost pressure would be seen ?

 

Cheers

Thanks for taking the time to reply.

From what I've read on your site, the CRDT comes with 4 selectable maps.

Can you give any information on the characteristics of each of these maps ?

And is each map then tweakable, not quite sure how it works

And do you have figures for what levels of boost pressure would be seen ?

Cheers

CRDT+ has 3 maps now rather than 4. You're best off ringing us as some point as it would take me an hour to write it all down, an hour I don't have at present