Im not sure about this but I have a JWT ecu and id swear I could tell I was in safety boost... The idle would be about 1000 at a stop, when driving it seems like the timing was retarded because of slugishness, also It seemed like I would be eating gas like a big friggin diesel. Watching the needle as I drove on the freeway it looked like it would go through a quarter tank in a half hour (normal driving). Most of the time when I turned the car off then back on it would idle normal at 700rpm till I started driving again.It seemed as if the timing was retarded AND more fuel was being dumped into it... Ive since put in a nismo thermostat (last year), and recently put in a AMS radiator (2 months ago). The thermostat seemed to fix it for the most part. I wasn't eating as much gas after that.