no i haven"t.i would think it would be that.its a new engine. and the problem goes in and out.it will clear up and then start to sputter again.it seems more like a ignition problem.
Tommy trust me,it has crossed my mined more then once.thats way my other car is carbed.no b.s. efi.don"t get me wrong the efi stuff is good......................with deep pockets and a ton tuning.