it doesnt have a fast idle valve either. I think the D15Z does but not the D15B8. i cleaned out the eacv and it seems to be running ok now, ill know better tomorrow after my 15 min. drive to work. while doing so i also noticed that my purge cut solenoid valve ( sits on the back right corner of the manifold on the driver side) was broke. I searched on a forum and found that you really dont need it and can bypass it. is this true or should i suck it up and get a new one? they are kinda pricey so if I can get by without it, that would be great.