Originally posted by: JC
Originally posted by: TuffGuy
Could be done the same way idle RPMs can be adjusted. It might depend on the electronic throttle (reprogram it so it won't open as much) or on the MAF readings. Who knows. That's my theory anyway, somebody correct me if I'm wrong.
If the converter's locked up at freeway speed, I don't see how the chip could affect freeway RPM. Unless it makes the converter lock up better (

) or makes the OD ratio lower (

). Converters are either locked up or they aren't.
I could see it could alter
when the converter locks up.....or mebbe the
chip just introduces some error into the tach signal.