Looking for good reference on "Performance Chip" makers for Polo 6R 66 TDI

[AFX]

There seams to be so many brands of aftermarket computer chip/box reprogramming not sure who to pick.

They advertise big gains of 30% more power while also being able drive more economical using higher gears improving mileage by 15%.

My concern with the increase in diesel fuel for more power also increases exhaust gas temperatures through the roof, which could cause a major engine component failure.

Who do you guys think offers the best solution?

[Greg Roles]

A proper tune will take into account your EGT's, something any plug in tuning box most likely will struggle to do. Any proper tune developing real power won't give much fuel economy increase, as indeed you are using extra fuel to make that power. My TDI on a full bore race file gives stock economy, but the performance difference is just massive. You can indeed get the best of both with a mild or mid level tune, but most people want max power unless they drive a lot of miles and are looking to save $$.

Good luck picking a tuner, but generally any out of the UK / Europe are the best for euro diesels.

[Lucas_R]

Looking for good reference on "Performance Chip" makers for Polo 6R 66 TDI

I would suggest that you avoid the cheap and nasty plug in style "tuning boxes" and go with a proper remap which is loaded onto your cars ECU.

I know DNA Tuning have a tune available for the 1.6TDI (see screenshot from their Facebook page below) and they have a dealer in Melbourne which is handy for you.

[Pearce]

Looking for good reference on "Performance Chip" makers for Polo 6R 66 TDI

I bought one almost a year ago for my 2.0 TDI. It's fantastic and increased my power by quite a lot on the highest setting. I have noticed an increase in diesel black smoke but that was to be expected from more diesel being pumped in. That's essentially what the chip does, increase the amount of diesel put in.

I think if I knew earlier though I would look into getting an actual tune. There are a few places around that do Diesel engines. I wasn't a member of the forum when I bought my chip, so I didn't know all the details back then.

Depending what you want it for, it will increase performance. Maybe ask about an actual tune as well.

[Pearce]

Looking for good reference on "Performance Chip" makers for Polo 6R 66 TDI

I bought mine from ChipExpress in the UK. I do like it though.

[getjet]

Do not buy a chip.

Get a tune from a reputable tuner.

[kaanage]

If you have any of the DPF regeneration issues that some 6R TDi owners have complained about, I would not get a tune and DEFINITELY not get a tuning box/chip.

It is possible to get a tune that does not cause additional fuelling at low boost and rpm but I would imagine that such a tune would not be very responsive with low accelerator/rpm situations since the turbo needs combustion to spool.

A tuning box/chip works by making the ECU think the engine is running lean so it overfuels it which is almost guaranteed to cause you DPF to regenerate far more often.

Mr Roles is too well behaved to market his company's tunes in this thread so I'lll do it for him. Viezu tunes are great for diesels and have transformed my 9N3 Polo TDi - Carformance sells them (along with other Viezu dealers). Contact
Sales@viezuaustralia.com.au
Office: 07 4057 6238
Mobile: 0406 131 596
to find the Melbourne dealer (I bought my tunes direct from the UK before Viezu had a distributor here).

BTW John at DNA Tuning is also a great guy and I believe that their tunes are very good too.

[AFX]

Thank you very much everyone for spending the time to write such informative replies.

This forum and members are the best!

[gldgti]

I can also second the Viezu recommendation from Kaanage, great to deal with and great tuners of diesel vehicles.

[Creampuff]

Viezu is a must, brilliant power and better fuel economy, Greg Roles in Brisbane is the best!!

[Greg Roles]

Thanks guys, I am humbled by the support, especially you Mr Cream, I prefer not to be pushy, but yes, you need a company that really has their head around DPF's as on the smaller diesels they can clog up FAR quicker than the bigger ones - you basically have a smaller capacity "pumice stone" and a sooty ie rich tune will load it quickly. Tuning boxes are crude at best, but should NEVER be paired with a DPF in my opinion, you need perfect air fuels to avoid soot, EGT's and to max out power.

I did have a tremendous drag across several lights with a hotted up XR6 turbo recently, and he got cained every time, I couldn't believe it. I was even out of water / meth. I'd pick an XR6 turbo for a traffic light drag machine over a manual FWD diesel anyday, it even surprised me. Bloody fantastic tune in the little beast, with more to come.

[noone]

the 2.0 turbo has so much potential torque, definitely a nice toy if you can get around the nuances.

I have no idea about the Polo 66. the question should be asked, if you want more power, then maybe the lowest power spec is not the best option for you?

[Greg Roles]

The little diesel won't pick up much hp, but a nice bit more torque, and as with all diesels that makes all the difference.

[noone]

tuning seems to be worthwhile on anything with a turbo (as VW / Audi / etc seem to leave some margin in pushing that side of the system harder).

[kaanage]

The little diesel won't pick up much hp, but a nice bit more torque, and as with all diesels that makes all the difference.

I'd be inclined to expect the reverse. The 1.6 CR TDi has been tuned so there is much less low down torque than you would expect for a diesel of that size and I believe that VW have done this to minimise the fuelling at low rpm in order to protect the DPF. The number of complaints about overly frequent regens would indicate that this detuning has not been entirely successful so a tune that boosts the low end torque would lead to worse DPF regeneration frequency.

Given that the 1.9 PD in the MkV Golf has similar volumetric output and can easily be tuned from 77kW to around 100kW, I would expect that the 1.6 CR could easily be boosted to around 86kW (and possibly further given the better high rpm performance the CR seems to give over the PD) but would retain the current low torque output below 1500rpm.

tuning seems to be worthwhile on anything with a turbo (as VW / Audi / etc seem to leave some margin in pushing that side of the system harder).

For most cars, yes. It gets interesting with performance models.
I have a friend with a BMW 135i coupe which has been safely boosted with a harness (a VERY sophisticated take on the tuning box) to around the same power output as the M version. With the M version, the tuners can barely increase the power over stock without problems so it seems that BMW have simply tuned the M version up to the limit of the same engine (without violating the warranty, however, plus suspension mods etc)