THE BEST SIDE OF BLACKTOP 20V 4AGE

The blacktop has lighter internals which happen to be also weaker, but it's kind of quicker. No harm if you're not doing any large mods, but any pressured induction and you will be needing to uprate the blacktops internals.That's what the resistor pack on some variations on the 4AGE does.Your MicroSquirt® EFI controller will Restrict the injector