I recently was introduced to a Throttle Bridge mod that was posted on my
Metro Forum and I decided to try it out. I simply removed the air filter assy and removed the 2 10 MM bolts holding the 2 piece bridge that secures the air filter housing and wingnut mount. I then used 2 left over pieces from a universal battery tie-down kit and used them to secure the air filter housing instead of the wingnut. This mod is supposed to let more air into the TB since the bridge actually blocks about 25% of the airflow.
Here is a pic..............
I did not notice any changes in performance or fuel economy, but decided to keep the mod in place. Since I drive slowly, this mod really does nothing for me until recently. I made another trip to Central, PA in the Metro and last time this poor car could not climb the Mt. Cresson Summit without dropping to 4th gear and holding it to the wood. It was embarrasing to get passed by fully loaded semis. This time the car made it up in 5th gear with 3/4 throttle
I seriously think the aerodynamic mods and the throttle bridge mod made a difference this time around.