[Graham]

i just got a TB on my focus yesterday. The gas pedal is really senitive. i put my foot on the gas a little bit and the tach shoots up. Why is it doing that??

 

[Wedge1212]

because the spring in the aftermarket TB is tighter than the stock spring....this is a good thing.

 

[Machine]

good throttle response, just dirve and have fun your brain will adjust.

 

[Wedge1212]

the spring will losen up over time too.

 

[sprout2287]

The main reason for this "jumpiness" is that under, say, quarter throttle now, you're letting as much air as three quarter throttle with the stock TB. So before the new throttle body you had to mash the pedal to get the car going, and now you only have to press a little. Just wait till you get used to it, then drive someone else's car who doesn't have one. You'll probably miss it a lot, I know I do...

Nick