im just looking at little parts here and there for my tiburon has anyone tried these??? i see it mas to be welded on

 

Anything can be welded on, the real question is, is it a good idea. I am going to go with a no unless you have a custom intake manifold or something to back that up.

 

A BBTB is 58mm. What mods do you have that require an inch increase in the bore of the TB? On top of that, a like WytchDctr said do you have a manifold that will support the increased volume? You're talking about a volume of 3.5ci per inch of tubing up to almost 5ci.

 

That size TB will screw with the ECU since it will see regular voltage from the TPS but a lot more air will be rushing into the motor...that is of course like others said, you have the supporting mods to get that extra air into the manifold.