Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0

What's the HP?

2 posts in this topic

Hi ya'll, what's the HP on a '03 450 with a procircut type 496 full exhaust? Or just the stock HP on the 450?

Most tests I've seen put the output of an '03 at around 47-48 stock (tuned and jetted). Most good aftermarket exhausts add .5-1.5 hp to that. The stock exhaust is very good, actually. The biggest increase I've seen was nearly 2 hp, but that pipe was very focused on peak power, and was weaker than stock by a small amount through most of the rest of the curve.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
Followers 0