Originally Posted by e39 bimmer
Whats the website for those? I'll check them out too.
I don't know if the ESS Twinscrew SC is available for your V8, but they are: http://www.esstuning.com/
The conforti intake can be found at various places, i tend to goto:
But i think turner is another place that carries them.
And lastly, AFE
They've become one of my favorites but only recent got into the BMW aftermarket business. Magazine dyno reviews have shown good results with their intakes. But as with most intake kits, you're not going to get a Huge difference.