Big news for GT TDI owners!

[SoVeReIgN]

Exactly what I intend to do, just waiting until after my first scheduled service. So I have a few weeks to decide what chip option to try first

Go the revo! And have it removed within 30days for your money back if it doesnt make the sort of power they suggest.

[Logzy]

I'll repeat myself here.
Be aware of warranty. The Bluefin is the only one that I'm aware of that allows you to revert back to the proper VW tune with no trace of a flash or flash attempt being performed. The ECU logs this.

Even the REVO, getting it removed after 30 days i would question whether it goes back to the original VW tune showing no signs of a flash or does it go back to REVOS version of the factory tune.

The last thing you want to do is void your warranty.

I personally wont trust any tune no matter what there figures are other than the Bluefin because it can be removed without a trace.

[Mischa]

I'll repeat myself here.
Be aware of warranty. The Bluefin is the only one that I'm aware of that allows you to revert back to the proper VW tune with no trace of a flash or flash attempt being performed. The ECU logs this.

Even the REVO, getting it removed after 30 days i would question whether it goes back to the original VW tune showing no signs of a flash or does it go back to REVOS version of the factory tune.

The last thing you want to do is void your warranty.

I personally wont trust any tune no matter what there figures are other than the Bluefin because it can be removed without a trace.

if anything goes wrong with something to do with what the ecu controls, they will ALL kill your warranty as the ecu logs much much much much more than just how many flashes that hae been performed.

[Greg Roles]

Someone go have their GT dynoed, then get it chipped and dyno it again - Not difficult.. With 176kw at the fly you'd expect atleast ~135kw at the wheels.

My stock TDI goes on the dyno this Saturday, right after Jaymz superchipped one. We are both at about 3000kms.

[dumbmonkey]

My stock TDI goes on the dyno this Saturday, right after Jaymz superchipped one. We are both at about 3000kms.

Awesome, it will be good to see some figures. Can anyone suggest a dyno join in melbourne?

[Greg Roles]

if anything goes wrong with something to do with what the ecu controls, they will ALL kill your warranty as the ecu logs much much much much more than just how many flashes that hae been performed.

Too true, but having worked in, and still having a brother in the motor industry, most of the time they don't go to this level of investigation unless it's a really huge $ issue. I spent some time with the grease monkeys at my selling dealer yesterday during my 1500k checkup, and they confirmed what I already thought, VW are one of the more leniant manufacturers out there at this stage. It's a grey area for sure, but they told me of GTI guys with chips and big exhausts getting specific motor parts under warranty without issue.

No promises, but it seems if you are reasonable, they are too. Can't expect to show up with a cooked turbo, blown CV's and a melted intercooler and claim no powerups.

[dumbmonkey]

Still no word back from the Revo guys. But I was thinking about their numbers this morning and decided to do the maths. To get 176kw from 392Nm:

30 x 176000 / (392 x pi) = RPM

4287 = RPM

We know that my maths is bogus because the peak kw point is usually higher up in the rev range than the peak in the torque curve (point where torque hits the 45 in its downward slope).

So actual the torque should peak @ around 85% of the max kw and the kw peak happens @ around the 75 - 80% of the max torque. So assuming peaks at 85% and 77.5% this gives:

30 x 149600 / (392 x pi) = Peak Torque RPM

392Nm @ 3644RPM

30 x 176000 / (303.8 x pi) = Peak Power RPM

176kw @ 5532RPM

Compared to the peaks @ http://www.revotechnik.com/aboutRevo/news/TDi170.aspx

441Nm @ 2910RPM & 157kw @ 4380RPM

Its basically a shift of the curve of +943RPM, that's a huge difference.

And its pretty much impossible to rev my car to 5500...

Anyway I make quite a few assumptions, and probably a mistake here and there, critiques of my workings are also welcome.

[Jaymz]

I tried to spin mine to 5000 on a slight downhill last weekend and failed. I dont believe it has anything after 4500.
I don't think this has all that much to do with the tuning either, i really think the exhaust has to much restriction.

I am hoping they will let me put the lambda up the pipe so the dyno can tell the real story.

[Mischa]

guys have you read the press release about it... its 157kw lol STOP SPEULATING!

Here's the news release and data sheets from the REVO site

Following months in development Revo is pleased to announce that new switchable performance software is now available for the 2.0L TDi 170. Improving the performance of this powerful diesel engine has presented many challenges for the Revo tuners to overcome throughout the project, but we’ve delivered! We are confident that you will be excited with the result, a very smooth & responsive drive with improved power and torque right across the rev range.

Performance figures are showing gains of +40-45bhp (+29-33Kw) and +60-70lbft (+81-95Nm) over the quoted OE numbers delivering 214bhp (157Kw) and 325lbft (441Nm). You’ll notice on our performance graphs that the standard OE performance on the cars we worked with was above their quoted figures, so our gains on these cars were +20-25bhp (+15-18Kw) and +35-40lbft (+47-54Nm). This new performance software is fully switchable between performance and stock modes using our select serial port switch.

The performance software for the VW Passat, the Audi A4, and the SEAT Altea and Leon are available now. The VW Golf, Touran, Skoda Octavia and Audi A3 are on their way, so get in touch with your local Revo dealer today!

[Jaymz]

I read that too. Where did 176 come from?