hi my name is sal i have an 03 s and i am just stumped at how i do the idle learn for my 70mm throttle body. it works perfectly fine but when im at idle, it feels like it wants to die. i just replaced the map because that died on me. the idle will fal then pick back up and it does this a few times before its ok. any help would be awesome. thanks. sal

 

It could be a few things although try to first reset your ecu by puling ther ecu fuse from under the dash, Then re start can and do not touch the idle for 2 mins, turn car off and re start it and see if its any better.

also, on previous cars Ive had many issues with larger throttle bodys as the butterfly wasnt properly adjusted causing either more or less air to flow as this sounds with your case.

If it were mine, Id try the reset, then Id see if there is a idle adjust screw on your new thrittle body and adjust that.

 

ok. i reset the ecu. now when i drive its still fine but when i stop the idle stays at 2,000 rpm for 2 seconds then it drops dramatcly then does the same thing it did before then its fine. its kinda frustrating

 

First off, the OEM TB is bigger then you need. The airflow specs are already higher then the stock car can use. Large FI is a reason to go larger, but 0-7 PSI the OEM still is up to the task. So just becasue it is bigger, does not make it better.

Now, if you can explain more about what the car is doing, in greater detail maybe we can help.

IMHO, just remove the TB and be done with it.