Hondata

Hi. I have a bored 65mm (stock is 60mm) throttle body in a 2007 Civic Si. The problems here are two. First, the ECU is always trying to keep the idle at 1500rpms while the car is moving, example: If I´m driving at 60mph and I shift to neutral, the rev goes to 1500 / 1700 rpms and stays there until the car stops completely, then is goes slowly to 850 rpms.
Second problem is related to TPS: When I take my foot off the pedal the car keeps accelerating for the next 2 seconds and then the injectors turn off causing a jerk. Same thing happens when I accelerate after this situation occurs but when accelerating is due to the injectors starting to work again.
PS: Between gears (shifting) the rev raises 300rpms (it sucks big time)
Any help on where to go to fix these issues?

get a stock tb again or get a tsx tb. something might have happened to ur tb when it got bored. the car will raise idle when in nutrale when coasting but not that high.

I´m sorry, forgot the most important information, this car still uses the stock ECU, the engine is being breakthrough, I´m installing the flash pro thursday. This car also has drag cartel cams, hi compression pistons, runs alcohol (very popular here in brazil) has headers, light flywheel, CAI, larger injectors... I use to tune all Sis I build with E-Manage (http://www.youtube.com/user/VTecBrazil?blend=2&ob=1) but theres no doubt that the flash pro is way better. So the reason I´m coming here is to avoid a lot of time to get to the point if someone already did the same thing.
Thanks everyone, any info will be apreciated.

until u are tuned u cant really make to many assumptions as far as idle the stock ecu is mostlikly compensating back and forth for the cams and compression and doesnt know what to do

Flash Pro installed the idle is great. Problem fixed.