One more local ECU : Uncle Leow's ECU
SMT,SAFC,E-Manage is NOT a standalone EMS, they're still piggybacks.
Which EMS is best?
1. EMS that is easy to setup and tune
2. EMS that has all functions that u need
3. EMS that doesn't has functions u never need
4. EMS that can do datalogging
U don't need EMS until ur current stock ECU / piggyback can no longer cater ur need. Things like camshaft (not the racing one) and exhaust mod actually don't need standalone ECU. Only when u're going for extreme eg quad throttle bodies, racing camshaft, increase turbo boost to over 1.5 bar and turbocharging stock ECU, EMS is necessary.
Some stock ECUs are actually programmable eg 4G93 ECU, that's where remapping/rechipping comes in eg Drax/J5. For 4G13/15 owners, sorry to say, it's not programmable, even using SAFC won't be able to remove its 6500RPM rev cut
