Sorry to raise an old thread. But I didn't have this on my k03 using a ramair k04 kit. But I now have the VW racing kit and I get this whistle on full throttle around 4-5k. Why would I get it on 1 get but not other. Bigger pipe work and no forced air??
Hi mate, been reading plenty of your posts recently, sounds like you're having a nightmare with intakes!
I'm pretty sure this resonance (sounds like a flute/recorder/harmonica?) is inherant in the standard k03 setup. I heard it on mine when it was completely standard for a couple of days over the summer. Strangely I haven't heard it since.
But the point is that this resonance is amplified by fitting an aftermarket intake on a k03 car - rather than the sound coming from the intake itself.
I've decided against an intake for mine, there just seems to be too many potential downsides against the gains. I'll be going Stage 2+ and possibly even k03 hybrid, and at no point have I read or heard that an aftermarket intake would be an essential part of a 2+/3 setup. Do you NEED it??
Just as a final thought - k04 cars seem to avoid this resonance issue. Whether that's down to the turbo itself or the different dv and pipework route, who knows, but you can do a dv relocation on a k03 car to match the setup on a k04 car. If you're absolutely determined to fit an intake and avoid this resonance thing, dv relocation might be an idea. It might work, it might not. Otherwise just go back to standard.
