is it really necessery in a NA car,12:6:1 compression b16a for your info..

i don't think so but it can't hurt either..

 

i got one on my b20vtec 13.0:1 cr

 

from what heard is that it really not needed but can be helpful on FI cars....i also heard that u can run into coolant problems...sometimes it overheats or it can leak..i remember runnin a search on them and that what i read about them....try searching for info...theres plenty of discussion about them..