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Discussion Starter · #1 ·
Just bought a C4.

Previous owner claimed it had a RS2 head. At one point, he paid ~ $3,000 to have the heads refinished and rebuilt. However, there are no specifics on what parts they used.

Are RS2 heads different than the stock head?

Thanks.
 

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Only difference would be the exhaust cam and the cam pulley. Otherwise AAN and ADU heads are the same.
 

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Discussion Starter · #3 ·
Thanks for the quick reply.

Are the any real benefits? Anything I can tell in daily driving?
 

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When paired with the RS2 turbo exhaust manifold injectors FPR and software sure. On a stock car maybe a little. The likelihood of your car having the RS2 cam pulley is slim since no one generally uses it when going RS2 just the cam.
 

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Discussion Starter · #5 ·
The car has an RS2 exhaust manifold and turbocharger (I have confirmed those).
 
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