hiccup

Been working on this issue for months maybe even years now, it’s the same thing every test drive, it runs perfectly except for size varying hiccups and/or hesitations up at around 2k rpm, the code we’ve been receiving all this time has been code 212: loss of IDM (ignition diagnostic monitor)...

my fox was running fine up until a week ago. now when i floor it it doesnt pull hard, kind of hiccups. im also starting to hear weird pops when i let off the gas which i think is misfire. the idle is good for the most part but just yesterday i noticed it drop a little 2-3 times over the period...