Ok so I have a 2004 s2000, my symptoms are rough idle also a popping sound, Sometimes on light acceleration around 3k the is a rough bogging. The spark plugs are new in the last 3000 miles, I have replaced one coil pack and swapped it out with all of the other 4 to test and see if maybe 1 coil has gone bad. I am thinking maybe map sensor? Or Injectors?
Anybody have an idea?
thanks
also if I have posted this in the wrong area please lead me to how to do it correctly.

 

Step 1: Compression and leakdown tests