Bought Edge Entry level from Fei last year.
Installed on Alza 1.5ezi.

Immediately gear change become smoother, less delay.
Light still dimmed when air con kick in, but less.

After a year, I get used to it already. Always flooring down the paddle for that quick response of RPM. Feel nice.
New manifold and middle bullets added, feel even better now.

Audio wise, no rasa, because I already change the stock system.

Months ago, installed BT103 in my hilux 2.5G vnt.
Today suddenly the stock audio feels so nice, clarity , base and stuff. Just my psychological? I'm not sure, need to compare whoever with the stock one without vs.

Gear change smoother. Low end rpm"feels" better
Diesel car no chance go over high rpm, so not yet feel above that