Inconsistent startup on street ported 12A

mattallac · 02-11-2012, 04:36 AM

Ok well your coils need to be checked for starter , and the specs for your carb are : venturi : 37mm ,Fuel jet no.170 ,air jet no.150,emulsion tube :f-11 and needle valve -no.250 . This is racing beat specs , I have worked with them a lot and for sea level this is a good starting point .RB tends to set the top end of they're tune a little lean ,but a dyno will tell you what you need to add or subtract. Back to your dlidfis :ditch that shit ,use the cap or run DIS . The dlidfis system is a cluster fuck and if it worked that great mazda would have used it to help with its early emission problems. And last of all kill the by pass ,turn it into a dead head system and this will simplify your fuel system ,fuel return systems in carb situations can cause problems ,check your fuel PSI when running .

02-11-2012, 04:36 AM	#6
mattallac Rotary Fanatic Join Date: Aug 2011 Location: crockett ca. Posts: 176 Rep Power: 0	Ok well your coils need to be checked for starter , and the specs for your carb are : venturi : 37mm ,Fuel jet no.170 ,air jet no.150,emulsion tube :f-11 and needle valve -no.250 . This is racing beat specs , I have worked with them a lot and for sea level this is a good starting point .RB tends to set the top end of they're tune a little lean ,but a dyno will tell you what you need to add or subtract. Back to your dlidfis :ditch that shit ,use the cap or run DIS . The dlidfis system is a cluster fuck and if it worked that great mazda would have used it to help with its early emission problems. And last of all kill the by pass ,turn it into a dead head system and this will simplify your fuel system ,fuel return systems in carb situations can cause problems ,check your fuel PSI when running . Last edited by mattallac; 02-11-2012 at 04:40 AM. Reason: add