The Unorthodox Racing Polished Lightweight Underdrive Pulley on your website, does it really gives you about 5 - 12 HP gain and 4-8lbs-ft on a normal beta 1 engine?

Has this been dyno proven? If yes, what were the mods done on that car?

I am very interested in this product if all this is true smile.gif

I've got a CAI, with 421 header and catback exhaust system soon.

 

5-12 is probably what the manufacturer says. On some car somewhere it got 12 hp so they put that in there. On your car you would gain a few probably. Not 10 for sure. You would feel it though

 

Hey,

Those were the numbers provided by Unorthodox Racing. I don't know what was done to the vehicle they tested. You will definitely feel it in the lower gears.

Thanks,

Kevin
KJB Motorsports