Lexus ISF / IS-F / LFA / LF-A  Forum banner
1 - 1 of 4 Posts

· Premium Member
429 Posts
That sounds like a faulty AFR sensor on the dyno. Its more like 11.7-12.7. Toyota generally runs rich to add more quench and increase reliability. Some "tuners" may try to get closer to stoich, but you have to think about tolerances over temp, pressure and crappy fuel. I will get another opinion or get some OBDII readings.

1 - 1 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.