1st off what are your plugs gapped at?...also do you have an adjustable Fuel pressure regulator?...if so try turning it down a little to lean it out some..If not also try stepping up on the FMU disk to lean it out maybe a 6.1 FMU is to rich..Just some ideas oh yeah whats you timing at?...do you run it with the spout in or out...you can try setting the timing say like 18-19 degrees with the spout out and leave it out and see how it runs...
help problems with supercharger
ok i have a fresh 306 w/ h/c/i setup 75mm t/b 73mm mass air calib. 30lb injectors paxton supercharger w/ vr4 kit 12lbs boost 6:1 fmu stock distributor msd streetfire coil ford racing 9mm wores zex plugs
the problem im having is all down low in the rpm range most of the time it wont idle and when it does it surges bad. i know its too rich afr(10.5:1) it seems to foulout the plugs and miss bad and no power until 4000 rpm then the cars insane im just not sure what would fix this problem if i need a chip, or more spark or different plugs or what. any help would be appreciated.
i do plan on buying a chip anyways but if i need something else first i would like to know
the problem im having is all down low in the rpm range most of the time it wont idle and when it does it surges bad. i know its too rich afr(10.5:1) it seems to foulout the plugs and miss bad and no power until 4000 rpm then the cars insane im just not sure what would fix this problem if i need a chip, or more spark or different plugs or what. any help would be appreciated.
i do plan on buying a chip anyways but if i need something else first i would like to know
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the plugs are pre gapped i know they should be around 35 but the zex plugs are kind of diamond shaped and say not to gap and yes i do have an adjustable regulator ill try that i hate to mess with the fmu because im running a 13.5 afr around 4000 rpm and yeah i still have the spout in with 12 degrees of timing ive tried to adjust it up and down with out any luck. i will try these few things when i get home friday and let you know the out come
thanks for the help
thanks for the help
Turn your timing down use reg autolite plugs that are 1 step colder than stock GAPPED. Add MSD or MAllory box, 255 high pressure Walbro pump, pro m meter. Then get a tune
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