i have an 02 si, my first honda and it has an odd miss, it isn't throwing any codes, the plugs, and coil packs are new but the miss starts right at 2k to around 3200rpm's at half to full throttle. it is a very noticeable miss, almost Subaru wrx sounding. i have done alot of searching on this and i honestly cant find anything about this. if anyone has any advice it would be greatly appriciated.

 

Hey, looks like you and I have a very similar problem. At least one of them. >_< my civic gets error codes, but I think they are from other things. Do you have any Pending Fault codes? (the ones that sit in the background that don't set off the check engine light)? I know sometimes a cylinder misfire or throttle position error will not give a published error but instead keep it at pending.

What have you done to your Si? Mine has a Cold air intake that it's had for a while, I now at least over a year and i'm thinking it's getting crap into the throttle body (oil and whatnot). I purchased a cleaner for my cone and I need to rip apart my throttle body to clean it but I don't know if that will solve THIS problem or some of my others.

Do you notice yours on the right side kinda by your feet and over to mid bay along with a sluggish response when it happens?

 

I'm having the same exact problem but it comes and goes, its wierd . Dealership told me kpro isn't communicating with stock ecu or something.

 

check out your injectors and also injector wiring including the plugs and makes sure all pins are touching. I had the same issue, one of my pins were pushed out of the injector plugs.