Are we giving advices?? Then let me say, don't pre mix..
I know several people including myself who had issues with fuel pump after pre-mix their 8s.
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1993 Black RX-7 Base current project (Sold!)
1994 Mint SSM RX-7.. my future Mazdaspeed 7
1993 MB RX-7 Touring "FEED"
2004 Lightning Yellow GT MS RX-8 (Gone!)
1973 Orange RX-2 Coupe (Sold!)
1973 Silver RX-3 Coupe (Sold!)
1991 Eunos Cosmo 20B Type-S blk/blk