ok i have searched many times and gotten a lot of ideas but nothing has fixed my high idle......it idles at 1100-1200 when fully warm and also sometimes acts like it has a vacuum leak, dropping from 1200 to 800 and back up etc......it is a z6 block, with a y8 head, z6 intake manifold, b18a1 tb.......ive checked the idle adjusment screw, the butterfly adjustment screw, eacv has been cleaned, map and tps arent switched....the only ideas i have are.....A) im using a y8 head, z6 intake manifold, and a z6 IM gasket, is that causing a leak? or B) im using a b16 tb gasket and that might make a leak? or any other suggestions....thanks!

its in a ef hatch obd0

 

bump!!!

 

um... if u think the gasket is not working.. u can make ur own out of gasket material. that way u can make it fit perfectly. gasket material = $cheap$

 

i still cant fix it!!

 

does ur tb have a "fast idle valve" on the bottom of it? i cant remember if b18 tbs have this or not.?...??????

 

use your si a6 manifold i had the same problem

 

nah i fixed it....just put a piece of soda can inbetween the eacv and manifold....my eacv is bad....