Throttle sensitivity

[FastPlastic]

I've pondered this myself. My jeep tends to be kinda jumpy at the low end. What if you just put something in the groove the throttle cable sits in (Strip of metal, plastic, etc). The bigger that cam gets the farther you have to push the petal right? If you put the strip all the way around you would loose a little top end. so what about just 2/3's? Making the cam more of an oval shape. that way when you hit the top end the sensitivity would go up. Just judging by the size of the cam I don't think it would take much to notice the difference.

[nascarnation]

A lot of vehicles are calibrated to act this way.
50% power with 30% throttle.
Makes them feel "faster" and "more responsive" than if they had a linear progression.
This philosophy will probably not change in the future as the power/weight ratio decreases.

As to fastplastic comment, I find my 97 Jeep Cherokee to be more linear than other cars. I always assumed they wanted good throttle modulation at the low end for "rock crawling" type stuff.

[getnpsi]

I would first play with spring tension. go to a junkyard and swipe 2 extra springs. See if you can wind and/or cut one tighter, and make the other one looser and see how it goes. while its apart or better off the car blast that thing off inside and out with carb cleaner. Gotta eliminate all variables here. Next would be to modify the geometry as the guy above said, ovalling out the cam the throttle cable rides inside. by doing this you are effectivly making the cable longer which the slack needs to be taken up somewhere.

Is this something that has always been a nuisance or only when trying to "featherfoot?" Your cable could be worn but usually they wear the other way around, where you have to press more to get the car to open up, then all of a sudden it does, which is double trouble for your mpg's. Extra response off idle is what happens when a TB is too large. I'd hate to suggest corking up the pipe right before the tb entrance because you could lose regular performance.

[Formula413]

The car has always been jumpy at light throttle. I like the idea of modifying the cam on the TB, although i think if I could eliminate the feeling of stickiness right off idle I would achieve the desired result.