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FWIW, platinum plugs are not a performance-type plug. Platinum is a long-wearing plug but its really quite poor, performance-wise. Gold palladium or iridium plugs are the choice for performance apps as they have the lowest resistance/voltage loss. I'm not saying this is your problem, but it could compound it...
[QUOTE=Scott Larson;283869]FWIW, platinum plugs are not a performance-type plug. Platinum is a long-wearing plug but its really quite poor, performance-wise. Gold palladium or iridium plugs are the choice for performance apps as they have the lowest resistance/voltage loss. I'm not saying this is your problem, but it could compound it..
Well thanks for the tip Scott I appreciate it. I did however read somewhere here not to use the iridium one's... hence me getting the double platinum's. well they'll be staying for now. but I'll be sure to pick up some high-performance next time!!
Got lucky this morning and after towing the parts car up on the ramps I discovered some new O2 sensors gunna be a fun night. AutoZone loaned me the special sockets to remove/reinstall. and if that's not it I'll have the cats checked like Indiana suggested. With any luck I'll be returning the FPR... Thanks for all the help Fam! I'll be sure to report back :P