mazdafvr
+1y
u can start with the air/fuel screw. i know u dont notice much except for idoling but it is important that u get it as close as possible. id screw it all the way in and the back it out untill the rpms quit rising and then another 1/4 to 1/2 a turn. did wonders for my factory carb, and it will help with carbon build up, and may help it run smoother. helped mine. theres really no other way to tune this carb. other than high idol and reg. idol. unless theres an adjustment i dont know about? if so im sure someone will chime in. you could also try replacing or cleaning your 02 sensor as it will automatically throw the computer in limp mode and burn rich and run poor if its not operating properly. but im sure youl get it figured out.