i need some infos on Jim C. chip.
i drive a 97 M3 and thinking about getting the JC chip.
is JC chip the best? or should i go for dinan chip?
also i would like to keep my engine compartment stock, therefore, im not installing any intake mods.
im wondering without the intake, will i feel the difference just from the JC chip along?
btw, does the JC chip have any side-effects such as rough idle, etc.?
any info will be appreciated.