Hey quick89! I have a very similar combo. You can check it out in user rides. I do have an aftercooler on it now though. With that I run about 13 deg initial with about 1 deg boost retard with no problems on pump gas. Track tune with a several gallons of race gas is 15 initial, no boost retard. I did work my way down to this tune slowly. I have had no other tuning done other than the track, with stock computer and 4 to 1 fmu. With 30# injectors I believe you should step back to a 6 to 1 fmu. 12 to 1 will be very rich.
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Vortech Supercharged 89 LX
Best run on dunlop radials 11.58 @ 126.5 mph!
Best run on hoosier quick times 11.15 @ 128mph!
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