I was just wondering what kind of horsepower gains im getting from putting a racing beat intake manifold and header on my 12a 1st gen? It is racing beat from the header back with prescilencers and exhaust. Just curious. thanks.

Josh

 

The exhaust is good for 25-30% gain in hp. (25-30 HP) If the intake includes a carb and with the exhaust you should make 150 hp or so on a stock 12A. The car will be like a different vehicle.