The K04-001 has now been installed, but all the planned K04 work is not yet complete (more about it later). I dropped my car off at the tuning shop on 13/11/2005. A before dyno was done the next day; this was to gauge the gains accomplished by the replacement of my K03 with the K04. The before dyno numbers were rather disappointing (I do apologise for the bad quality of the scans!):
As you might be able to see; she made 125kW and 277Nm at the flywheel. I must say that I expected more (considering the work that was done before). WG had not previously used the dyno and was not too concerned about the numbers as it was to be used for a benchmark only. It is common knowledge that the same car can make very different numbers on different dynos; even the same car on the same dyno on different days can make different numbers.
I got my car back on 18/11/2005 and the following was done:
* K04-001 installed
* Silicon turbo intake hose installed
* Forge 007 diverter valve installed
WG decided to stick to the standard MAF housing, 3Bar fuel pressure and a K03 ECU map in order to give the new turbo time to settle in. Although she was running K03 boost, fueling, etc, she felt stronger. The after dyno didn�t help either:
As soon as she started boosting, the wheels slipped and it was not possible to get a proper reading. Extra weight was put on the front, but it did not help. She showed 123kW and 239Nm! What a disappointment! If the two dyno plots are overlaid, one can see that the after dyno plot had a steeper slope and more power than the before dyno plot, that is until it started slipping. I suppose I could not expect more as the turbo is not utilised 100% yet...
I have put about 1500km on the car (in the two weeks after I got her back). I can feel a power advantage over the K03 (especially in 3rd gear), but not much. I believe it is due to the K04-001 being more efficient boosting what REVO K03 ECU map asks for. The K04-001 can also hold the boost for longer, if the software asks for it. The next move is to get her to a proper dyno for a �before-after� dyno, if you know what I mean...Then the VR6 MAF housing, a 4Bar FPR and a custom ECU map. I think I�m going to wait until early next year for that, we will then have 95 octane unleaded here (only 93 at the moment), which should give the ability for a little more boost�Aquamist is also a possibility as I do not want to go the FMIC route.
I might sound a little down-beat. It has now been the second dyno my car rolled on, but they were both equally useless. I have now spent a considerable amount of money, but can only say from my butt-dyno that my car is stronger and quicker than standard. Also, running a �180kW turbo car at �150kW (what I think she is pushing at the moment) feels a bit of a waste! Although she is a lot smoother and even has better fuel economy, I know there is more power just sitting there, waiting to be harnessed. I should be happier with the end result, once all the planned K04-001 work has been done...Can't wait to have her pushing more power!
I took my car to one of the more well-known dynos in Johannesburg for a dyno pull only. The dyno is at TopSport Developments. The shop has been responsible for some of the fastest VWs in South Africa.
She made 130kW & 306Nm at the wheels, which is about 163kW & 369Nm at the flywheel. The numbers are not too bad in my view, considering that we are still running K03 software, fuel and boost. The worrying part about it is the erratic curves she is producing. A car�s power is a function of the torque it produces. This is why a custom ECU map is required.
As I said earlier, with the phasing out of leaded petrol in SA we will get 95 octane unleaded at the reef next year January. We decided to wait for the 95 octane unleaded before changing the MAF housing, upping the fuel pressure to 4 Bar and to do the custom ECU map. So, watch this space�
Happy New Year to all of you! Well, it is a new year with new challenges. My car will go for a custom map next month. I hope the power will be more like I expected and that the torque and power delivery will be smooth...I will update as soon as it is done :-)
I plan to change to a VR6 clutch kit once my standard clutch has gone. It now has 130 000km and it is still holding on. I have therefore been busy chasing a G60 (or 2L 16v cable-shift) flywheel for quite some time. It is necessary when converting from a standard dual-mass clutch and flywheel setup to the VR6 setup. I can not believe how scarce they are 2nd hand here in SA. I've managed to locate one and will have it soon. The VR6 clutch setup is considered a stronger setup and it is cheaper too. So, it is a win-win situation.
I got some new goodies for my car this month:
I am still waiting for my promised custom map from REVO. I've been told that it will be done next month, but I'm not going to hold my breath!
I also changed my wheels in the meantime. When I first got my 18"s they were finished in hyper silver, which almost looked like chrome to me. I was not 100% happy with them, but knew they had potential. I have been wanting to change them for quite some time, my idea was to keep the polished lip, but change the centre section to a darker silver or charcoal. I was given an oppertunity to change them a few months ago and went for it. The result is a polished lip and Volvo charcoal centre sections. I think it looks a lot better and is really happy with the outcome.
I have strugled to get a custom map from the tuner for four months now without any luck. I was refunded 50% of my initial map costs and will now get a custom FRC (www.frieling-racing.co.za) map done this month. I can not wait!