ITB's.... what are the pros and cons?

[SpoonK20A]

I have seen some K20 civics on youtube with ITBs.... is this a huge performance gain or not?.. whats the best alternative?

 

[97hatch]

there is no alternative to itbs they are a huge performance gain if you have the engine to suport them but first you need to bump the compresion a seroius port job and some serious cams

 

[oyy0]

and with ITBs you have to remember that a tune is absolutely necessary.
You have to get your input mainly from your TPS, not the MAP because vacuum is non-existant with them.since there usually isn't a plenum.
another pro is that they make the meanest sound ever... so nice.