hi kevin, i'm the Altis with complete bars doin the foam last week. Somehow it compliments the bars set up...the next day i went back to Terengganu, i could feel the difference. BTW foam is not new for me as my Myvi was foamed fully-(race package at autofoam )the handling is good but ride not so comfortable for long highway cruising ...
If want retain comfort , use Ultra racing bars + basic foam. Wanna race..hehe