actually i have two questions first how can i get rid of all that emissions juck and get my inline six perform better.

two: will the weber carb setup give a remarkable performance increase

Fill out your profile and tell us what vehicle you have.

Then we can help you out.

Welcome to the board. You should put your vehicle info in your profile, that way we know what you run. Since you asked about the Weber carb, I'm assuming you have a 4.2L in either a CJ or a YJ.

Which emissions junk? Computer, carb, distributor (not that the distributor is in and of itself an emissions item), the plethora of vacuum hoses under the hood? Please be more specific.

Upgrading the ignition is the cheapest performance upgrade for the 4.2L. Do a search on "teamrush upgrade" to find out how this can be helpful.

I encourage you to use the search feature, especially if you plan on using this board more than once. There are few topics that haven't been covered, so a search gives you insight as to what others have encountered. Then, if you have more questions, post a message. We're here to help!