[just chillin]

what's the difference between the itr and si im? i heard they're pretty similar. also, what kind of gains could you expect by putting a itr im onto a si engine?

 

[MrMike]

larger, shorter and more direct runners. And also a larger TB

 

[Daremo]

By just swapping on the ITR manifold onto the Si, you will lose some midrange, and brake even on the top end, or gain a little.

Unless you have more work done, it is not necessarily benneficial to swap them out.

 

[just chillin]

thanks for your replys. the reason i asked is becuase my friend asked me if it's worth the $ to put an itr im on his si. so i guess it's a bad idea then.