Dif between 103 and 125TDIs

[brad]

Where's a good place to find out about tube options and costs ?

This section of the forum or the performance & tuning section or the area specific to your vehicle type. Search button is very handy as the info is spread around like chicken feed in a coop.

[Ryeman]

Honestly, it just comes down to risk, and this has always been the case with any engine, any car, any manufacturer, for all of time.

If VW decided it was worth their risk, they would sell the car to you with more power than 103kW. If a tuning company decided it was worth their risk, they would sell you a tune to increase the power more than they do. And if you decide its worth your risk, you would ask a tuner to tune it for more power than the standard stage 1 tune.

As it is, any more generalised questions about the viability of a tune or otherwise are moot - just look around you. There are people making good money selling stage 1 tunes to other people, and not many people are suing the tuners...that should be all the reassurance you need. If not, sell the 103 and buy a 125.

Maybe it was a long torturous method of asking the simple question .....is the dif between both simply in the tune?
The part numbers would be a good indication for commonality.

[gldgti]

Maybe it was a long torturous method of asking the simple question .....is the dif between both simply in the tune?

It has already been answered - no they are not the same engine with a different tune. Not at all.

[Ryeman]

It has already been answered - no they are not the same engine with a different tune. Not at all.

Thanks for that.

[parso_rex]

Do it. Both engines are very strong and you won't damage anything internally from tuning them. The 103 when tuned is very very nice and the gains are a touch larger than you see when tuning the 125's.
You could possibly damage the turbocharger if the tune was over the top but that's about it and as long as you don't go for an internet tune then I'd say you'd be quite safe with any of the places on here.

[Ryeman]

Do it. Both engines are very strong and you won't damage anything internally from tuning them. The 103 when tuned is very very nice and the gains are a touch larger than you see when tuning the 125's.
You could possibly damage the turbocharger if the tune was over the top but that's about it and as long as you don't go for an internet tune then I'd say you'd be quite safe with any of the places on here.

I must say, reading the 'injector fail' threads, it does scare the c..p out of me.
If their life span is not compromised I'll go for it at some stage fairly soon but am wary of VW's 'get out' clause if a problem cropped up with them.
Thanks again all.

[parso_rex]

But are you looking at the more recent common rail versions or the 125 engine with the pump deuce setup which yes has had injector issues. The two are quite different and the common rail engine much less prone to those sort of probs

[Ryeman]

But are you looking at the more recent common rail versions or the 125 engine with the pump deuce setup which yes has had injector issues. The two are quite different and the common rail engine much less prone to those sort of probs

Just been doing a 'wiki' on VW Diesel engines jeez now I AM confused .....the 103 AND 125 seem to be co-listed ....both 16V CR bore/stroke etc. What's the difference btw it and a BKD engine? Is one a better 'project' engine and why?
Sorry for demonstration of my complete ignorance but v interested.

[Mysticality]

Yours will be a 103kW/320Nm TDI-CR [common rail, direct injection], engine code CFCH.
The latest one. No injector issues, thats the older model - the BKD (TDI-PD [pumpe-duse])

I have a TDI125 (Octy vRS TDI, engine code CEGA, the stronger version of your engine) and its supposedly pushing out 170kW/450Nm on a stage 2 tune. No issues, feels nice and strong.
Also it could be worth putting your Yeti on a dyno, when I dyno'd my vRS it was pushing out 136kW/361Nm with the stock tune

[Ryeman]

Yours will be a 103kW/320Nm TDI-CR [common rail, direct injection], engine code CFCH.
The latest one. No injector issues, thats the older model - the BKD (TDI-PD [pumpe-duse])

I have a TDI125 (Octy vRS TDI, engine code CEGA, the stronger version of your engine) and its supposedly pushing out 170kW/450Nm on a stage 2 tune. No issues, feels nice and strong.
Also it could be worth putting your Yeti on a dyno, when I dyno'd my vRS it was pushing out 136kW/361Nm with the stock tune

Thanks for that info, I didn't know just how many engine variations there were.
Trouble is I want Ozishield protection AND DNA remap so logically paint comes first then budget for tune.
Ta again.