ok guys I have 2 questions to ask you guys... 1st what kind of throttle body is this? and If I install it on a stock intake manifold would it make my engine lag? its a 68mm

 

motor? specs?

 

i have a bone stock B20 with a b16 head ...oh and a cold air intake..

 

its hard to tell what that t/b is for id say b16 or something, so id try to hook it up messaure how big it is first compaired to what you got as it could be overkill

 

thats too big for your setup, get a stock itr throttle body for your setup, or 65mm at MOST. make sure you also port your manifold if necessary when you get the correct size TB. that 68mm should be used in cammed and ported engines...