21-02-03, 12:14 AM
I've got a '95 900se and just looking for some opinions on piqqy-back engine management systems that leave it to the operator to make the modifications. (ie:Smart Tuner found on bimmertoys.com) My thoughts are that, if you know what your doing, you can improve power/effeciency for less money than a complete ecu upgrade. And as a person adds more upgrades like turbo conversions you can adjust the chip to adapt to the changes. But I know that saabs are kind of sensitive to universal upgrades like that. And for all I know, something like a piggy back unit could end up screwing up the engine. Has anyone looked into this kind of mod?