throttle body spacers
Teching In
Joined: Sep 2002
Posts: 7
Likes: 0
From: Roseville, CA
Re: throttle body spacers On a throttle body injection or carb motor, it can make a fairly significant difference. But it depends on what RPM range you are looking for performance at (It effectively makes a larger plenum, so your vacum/throttle response isn't as crisp, particularly with a carb.). The main thing it does for those setups, is allow you to increase the distance that the fuel droplets have to change direction before hitting the plenum floor.
At higher RPMs, the fuel is travelling faster, which means it takes a longer distance to change dirrection. If the fuel droplets hit the plenum floor, they tend to fall out of suspension and form droplets on the plenum floor. SO if you're A/F is correct, you go momentarily lean and then it gets rich as RPMS decrease and the fuel evaporates. Bad craziness!
Anyway, with a dry manifold setup, it's pretty much snake oil. Might as well put a 5" exhaust tip on a stock Civic IMO.
At higher RPMs, the fuel is travelling faster, which means it takes a longer distance to change dirrection. If the fuel droplets hit the plenum floor, they tend to fall out of suspension and form droplets on the plenum floor. SO if you're A/F is correct, you go momentarily lean and then it gets rich as RPMS decrease and the fuel evaporates. Bad craziness!
Anyway, with a dry manifold setup, it's pretty much snake oil. Might as well put a 5" exhaust tip on a stock Civic IMO.
