how much would throttle body spacers cost...is it a bolt on job...as for that helix thing...i'm always kinda skeptical about these products taht make a 'vortex flow'...the pic looks like the air is gettin mangled...but when i went to go buy seafoam at napa...this guy was askin about the vortex intake add-on...and said that like 5/10 ppl he talked to had big mpg gains...i say no...thas juss bs