Sorry but the Mazda and F1 engine sound like the Suzuki GSXR 750 I had with it's Micron race pipe.
The Audi S1 quattro sounds cool but as our colonial cousins like to say, there's no substitute for cubes. Now if you can have your cubes and like the sound of wastegate whistling then this is the engine for you........
http://uk.youtube.com/watch?v=AiBkZt...eature=related
I rest my case!
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Losi Eight T - Nova Rossi P21-7T- Hitec 5955's & Spektrum + TeknoRC Losi 8ET - Neu 1515-1Y - MGM 16025 & Hitec 5995's.
RC Heli's - Align T Rex 600 Nitro Sport - X-Cell Spectra G gasser.