beetle driver for life
I've seen kits for a K04 turbo upgrade, and it has me wondering where did the K04 come from? What sets it apart from the K03S? Is it made by Audi or VW? And is the K04 a simple bolt-on?
i agree with you completely that its not "bad" upgrade. What I'm saying is that if you pay full price for any of the K04-001 kits on the market right now, i find that foolish, given the power gain to be had. You end up paying $1500-1800 for 10hp and maybe 20 lbs/ft of torque... meanwhile you could buy an O20 kit or piece together a bigger turbo (doesn't have to be huge, GT28R or RS)and then detune it and have the potential for more gains in the future. Basically you can pay $1800 for 10 hp and 20 lbs ft or you can pay another 400-600 and have the potential for 80-100 more hp than the K03S can deliver. Its not worth it to buy the KIT. If you blow a turbo or just find someone getting rid of one, and can get it for relatively cheap, then yes, its worth it. But personally I wouldn't spend more than $600 on one. Thats a matter of personal choice but if you think about it you can get a 2.5" turboback on ebay for about $400 total, and that gives a similar gain to swapping between a maxxed K03S and a K04-001. So in reality, is that 10hp and 20 lbs/ft worth the almost $2k that some people spend on a K04 kit? There's no argument there. In the end, it comes down to the users personal choice, but remember that you can also run the K04-020 at less boost and make less power. Then, when you feel the need for more power (which most inevitably will), all you have to do is crank the boost up rather than spending ANOTHER $2K+ to go to another turbo setup. I guess the safe bet would be to find someone with a K04-001 car and ask them for a ride. If you really think that you'll never want more power than that, then go with it. But if you have the slightest inclination that you'll want more, go with something bigger.NJ Turbo said:While many feel the K04-001 is not an ideal upgrade, it is still a very good option for some people.
It's a good upgrade for APH engine owners as it will outperform the K03 that is on that engine.
I also think it's a decent bolt on upgrade for K03s cars too.
If it will provide reliable 220whp with @275wtq, that is well above what a K03s will reliably supply. (Usually 190-200whp in most cases, and @240wtq)
For example, I have Revo Stage2 programming, and I could continue to use that software with a K04 and just turn up the boost a little.
Not everyone wants to spend $3k-4k on a BT setup that may or may not run as smoothly as stock. Plus not everyone wants 300+whp in a FWD car.