Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Mon Dec 17, 2007 4:10 am
If you're tuned properly, you shouldn't be running too rich. On high power goals, you want to be rich to give your motor overboost headroom to avoid detonation. I know some shops tune for 11.5:1 AFR or right around there. You sacrifice peak power to gain reliability and a safe zone.
To the OP, before you start slapping parts on your car, you need to have a goal. If ou're looking for 350 horsepower, 550s will do you, but if you want 400, you'll need to step up to 660s as the 550s will be over their max duty cycle.