F20B IACV fix for obd2-obd1 conversions. I have been searching for weeks and since multiple threads point out wrong information I figured I would post up my fix. Since I saw multiple people say to buy the blacktrax plate I bought the plate without a second thought. The only way this mounts to the IM is backwards so it wont work with the IACV (Im sure the roskoracing.com is the same). So after going around with no solution I finally figured out how to make it work. The cost will probably be the same as a h22 upper plenum however the TB opening is 66MM on the f20b manual compared to 62mm from the H22 from what ive read (may be wrong). Looks like both IM are 63.5mm.

After sitting around looking through mutiple treads and parts and not finding anything that will work or that I wasnt sure would fit I figured id mix and match a few things.

Get the plate and thread the two IAC holes with a NPT tap (size to come later)
Get 2 NPT nipples and thread them in
Buy the H series IACV relocation mounting plate from roskoracing.com and run two vac hoses from the plate to the mounting plate.
Mount any B,D, or H 2 wire IACV to the mounting plate
Cost will be about 90-100 bucks


IAC Adapter Flange
https://www.roskoracing.com/cgi-bin/...on&key=200-022

I hope this helps someone else if they run into the same issues that I have. If you want to delete this go ahead just let me know where to post this info.