V-Tune (Software by APR)

[adzy]

Unless you have the car attached to a dyno with the appropriate logging gear, we would strongly advise against using it. It's too easy to overcrank parameters & lose an engine!

Just imagine the destruction if this wasn't the case!!! Advancing timing by 2 degree incraments..Jesus! LOL Look out Anthony Rodrigues

[noone]

Having played with the timing, I'm not sure I see what the fuss is about. Advancing the timing yields more power (especially off boost), likely better fuel economy but also higher heat created and greater chance of detonation.

On saying that, I don't see why working with the vag-com logging isnt going to be safe. I have not yet had detonation on my car and the engine has knock detectors built in which is why its so easy to make changes and test without getting ANY detonation.

I will be going for another chip down the line, but for the mean time, a few extra deg of timing is only a good thing.

BTW, I think this is only really safe on the Polo with the upgraded FMIC.

[Guy_H]

There are dangers, you may not take them "seriously" but we certainly do. Dead turbo's & blown motors. If you have "advanced timing" beyond what a calibrator with a couple of thousand hours of 1.8T calibration under his belt would do - surely you must ask yourself why? Some of our customers from 1998 have in excess of 300,000k's on their original turbochargers & engines with our tuning!

Hi load, hot day, bad batch of fuel, excessive EGT's - will you have VCDS connected to your car 24/7 to monitor this?

The tuning is a balance of power, economy, longevity, reliability. you increase one, you decrease the others, pretty simple fact.

Just spent some time with some race car / engine builders who specialise in tarmac rally specials. The top EVO 9 fellows get 1000km's out of a turbo charger. They go like hell, but at a cost, and its not done with boost (as they are boost restricted).

[noone]

Right.

So the question is why am I tweaking over and above what APR as a reputable company offer? I am looking to yield more power from my current setup as APR is not able to provide me with any further tuning potential beyond the Stage 1 V2 tune on the stock turbo. I have looked at data others have collected and with my added timing, I still have less than some other tunes.

So why am I fiddling with the hand grenade? I am adding timing that i believe is safe. Having looked around and read what I can, I believe that with the upgraded intake, exhaust (well, dump) and intercooler, the intake temps are MUCH more stable than with the stock cooler.

I take it seriously, thats why I log before I make a change and make changes slowly then drive it for a few days and log again before chucking in any more. I understand that giving someone the ability to change a parrameter into a dangerous area is reason for warning, but I don't see why what I'm doing is overly different to what a tuner may do - as a part of the map.

Whilst I'm no expert on tuning, I am starting to understand what a tune involves and although I do not have the current knowledge to make my own maps, it certainly does intrigue me. I am a little suprised that people fool around with MBC's and other toys, but adding 3% of timing (what I'm running now) is seen as bad.

Guy, if you can get me V-Tune compatable code for my Polo, I'll be your best friend forever... Otherwise I'll be looking elsewhere to see what the other tuners can do for me.

[Guy_H]

Give me a call in the office on Monday, and I'll tell you why it's currently not on offer. Once you hear why, you might change your opinion.

It's your car at the end of the day - I can only advise on what I see & have seen over the past 12 years involved in the tuning of the 1.8T's - tel 1300 730 949.

[noone]

Fantastic Guy, I look forward to speaking with you then.

[Guy_H]

P.S., forgot to mention, there was a lot of "experimentation" carried out on our street / race polo, and as some members can attest (who were around at the time), we actually managed to max out the K03 with a race tune that then required different injectors & then a different in tank pump as well. I think we spent about 200 hours working with the K03 tune & fuel before we went up to the K04 & had a happy, safe combination that wouldnt see us with a dead motor or turbo during a Tarmac rally.

[noone]

Hmm, something in there sounds interesting...

Is there something in the bigger injectors that helps? Sounds like there would be a bunch of fun files on someones computer...

Well, I'm guessing that the K03 was not up to the task. If I go for a turbo upgrade, don't think it will be a K04...

[noone]

Well, was at the Sydney dyno day yesterday. The car pulled expected Kw's, but the Torque is a long way down on what I was expecting:



I've been told more than once that the Torque is the real fun for the Polo. I did not reset the Tune before we started, another member with very similar mods made an extra 30nm's with his APR freshly reset.

So I remain sure that my Power falls off (well, torque) quickly after the tune is reset. What I'm looking for is answers as to why the adaptation is making my car slower.