Can't seem to find much info, but have heard rumours that the 2.0 TDI CR 140bhp engine is the exact same as the 170 version and that the map is the only difference, is this true? If not what differences is there?

Different injectors and turbo if the PD's are anything to go by.

According to my research (google mostly, including german and swedish sites) there are 3 different opinions:

1. anyone working in any sales position (tuner or dealer) claims it's only ECU

2. enthusiasts comparing part codes in ETKA claim there are the following hardware differences: turbo, 2 different intercooler boost pipes, flywheel, DPF and EGR cooler gasket

3. some german car freak who claims he knows what he is talking about says: turbo, waterpump and exhaust downpipe

So go figure..

The turbo has a different model code. I'll defer to the ETKA demons on the other stuff.

IMO, anyone who claims just software differences is best ignored.

It's a different turbo on the CR140. Apparently more prone to going bang on a remapped car too so beware.

The turbo has a different model code. I'll defer to the ETKA demons on the other stuff.

IMO, anyone who claims just software differences is best ignored.

So it's just the turbo, the acrtual engine maybe the same?

as per PD weaker bottom end , smaller turbo on the 140

I don't have ETKA, but I would expect the reported list of parts to also be different (DMF, injectors etc) along with the turbo which I confirmed different through other sources.

Following this up, i do know the CR 140 and 170 engine ( injectors and internals) are identicle no question there. However even though the turbo's have different part numbers, experienced tuners are claiming the turbo's are the same, this is what's doing my head in, Why are they different part numbers????? I have in my possesion a turbo off a 170 and don't now whether to go to the hassle of fitting it. Does anyone have the definitive answer on here? It seems to me that reputable tuners don't even have a clue what engines they are working on!

Edited 30 May, 201313 yr by Micky 32

"reputable tuners"

Im sure the 170 has different injectors, maybe some subtle changes in its cooling system too. Turbo is definitely different; one of the key reasons a 170 makes quite a bir more power mapped than the 140.

Im sure the 170 has different injectors, maybe some subtle changes in its cooling system too. Turbo is definitely different; one of the key reasons a 170 makes quite a bir more power mapped than the 140.

The 170 does not have different injectors, Both CR engines 140 and 170 are indenticle including the injectors. The PD 170 was a stronger engine than the PD140 alright, the PD170 injectors were different also. I'm just not sure about the CR turbo's.

Edited 30 May, 201313 yr by Micky 32

The 170 does not have different injectors, Both CR engines 140 and 170 are indenticle including the injectors. The PD 170 was a stronger engine than the PD140 alright, the PD170 injectors were different also. I'm just not sure about the CR turbo's.

OK but the 170 still makes 40-45 more HP than a 140 when mapped so there are some blatant mechanical differences and yes the Turbo must be one of them. Turbo will be same model but VAG use loads of different variants of the same blower; it'll have to handle more boost pressure for one as thats the key way a 170 will make more power than the 140.

Dare I say it but is it potentially easier all round to sell your current car and just buy a 170 diesel vRS? I wouldnt see the point personally in taking a non vRS variant (not sporty) and taking it to mapped vRS levels unless you propose (or have done so already) to upgrade the suspension and brakes.

OK but the 170 still makes 40-45 more HP than a 140 when mapped so there are some blatant mechanical differences and yes the Turbo must be one of them. Turbo will be same model but VAG use loads of different variants of the same blower; it'll have to handle more boost pressure for one as thats the key way a 170 will make more power than the 140.

Dare I say it but is it potentially easier all round to sell your current car and just buy a 170 diesel vRS? I wouldnt see the point personally in taking a non vRS variant (not sporty) and taking it to mapped vRS levels unless you propose (or have done so already) to upgrade the suspension and brakes.

I have just bought a brand new CR 140 Passat, if i was to buy a CR 170 Passat in IRL i would have had to buy the highest spec which probably cost me a few grand more. I got a verified CR 170 slighty used turbo for a few hundred so to me makes sense to go this route. It seems the 140 clutch isn't as good but everything else ( not sure on turbo as yet) is the same. Tonight i compared injector numbers against my mates CR 170 Passat and they BOTH use 03L 130 277 J. So can any tuners chime in and say why CR 140 map to 175 ish and CR 170 200 ish, is it the turbo that's limiting the power or is it purposely limited because of the weaker clutch??

The CR 170 doesn't make 40-45 more it makes about 25bhp more on average when mapped.

Edited 30 May, 201313 yr by Micky 32

As a QQ are there differences elsewhere too? E.g. is the rad and water pump as big as the 170 will produce more heat. What about the intercooler, is that the same etc. Just a few things I thought of but I don't know the answers I'm afraid

I have just bought a brand new CR 140 Passat, if i was to buy a CR 170 Passat in IRL i would have had to buy the highest spec which probably cost me a few grand more. I got a verified CR 170 slighty used turbo for a few hundred so to me makes sense to go this route. It seems the 140 clutch isn't as good but everything else ( not sure on turbo as yet) is the same. Tonight i compared injector numbers against my mates CR 170 Passat and they BOTH use 03L 130 277 J. So can any tuners chime in and say why CR 140 map to 175 ish and CR 170 200 ish, is it the turbo that's limiting the power or is it purposely limited because of the weaker clutch??

The CR 170 doesn't make 40-45 more it makes about 25bhp more on average when mapped.

Beg to differ there. Is possible to see anywhere between 205 and 210hp from a well remapped car, some may duck slightly under 205, some make 215 if they're lucky but its rare for a remapped 170 CR to be under 200hp unless its been tuned for even more torque.

No disrespect but why not cut your losses, sell the turbo and just map the 140 with standard hardware. A mapped 140 will be just as quick if not quicker than a standard 170 anyway and you'll save yourself a world of pain (and expense) getting your 140 to 170 spec hardware wise.....personally I think its pointless.