I have heard a lot of people say that it's useless to go with a safc or emanage because the ecu will compensate for the altered signals... but the rrm unit is similar in that it's just another piggyback (a split second psc1) and people use that. How is the rrm unit different that people use that instead of other piggyback units? Just curious since the documentation on the split second website even warns about ecu compensation

 

reflash is much cheaper than a piggyback without wiring plug and play