GUNRU-GS4

I've had my GS4 for a year now and have always felt a pretty big difference between power mode on and off. Some people say there isn't that much diff on their cars but on mine I can really feel it. Since I have put on a K&N FIPK and Borla exhaust now I can't really feel the difference anymore. Doesn't the PWR mode just change shift points? Whats going on???? Also with the intake and exhaust my gas mileage has went up!!

chuckb

pretty sure the ect-power button only changes shift points. mine is set there 24/7.
ect=electronically controlled transmission

STONER

Did you reset your ECU after installation?
If not, you should.

pavster

Yeah, reset your ECU by unplugging the fuse for a few minutes. The power button does more than change the shift points. According to the doc for the system, it also quickens the electronic throttle response. I can tell a night and day difference with mine (no mods on the car). A couple of times I thought there was something wrong with the car, and it turned out I accidentally kicked the switch out of the power mode.

-pavel

chuckb

more like 30-45 minutes to be safe. the fuse is ecu-b