Stumble with gas. feels blown but idles fine. Buzz from IACV but new does same?
 

:wallbash: I tested the resistance of the old IACV and it was 11.5 but there was a disc that fell out of it before. There is a loud buzzing noise with the engine off but key in. So I ordered a new one from Mazdacomp (received next morning). Resistance was the same. Only noticable difference is white discs instead of black. I install it and correct the idle and it sounds fine. Step on the gas and there is a long delay. If I step too hard it stumbles and dies. Suppodsedly my last tuner said he was going to correct that even though i've never noticed it or had a problem with that before. I know the wire harness plugs are keyed and color coded and there is a possibilty of mixing two or three of them but I don't remember the IACV being one of them.

AWS and double throttle are blocked off and not being used. :MissileSm

Well, still can't get an appt with Mazdatrix. Can't get squeezed in early with XS Engineering. So here are my new plugs (9's) after a few hundred miles after retune from Neptunespeed.
http://img.photobucket.com/albums/v2...acer/NGK9s.jpg