Fightnfire
Moderator
Often times we talk about about things and don't really see the data, this post from Tacomaworld is interesting and I tought I would share it here. This is from a shop that does tunes. Here they're comparing peak tq and hp using 91 and 85 octane fuel. A reduction of 45ish torque. Also note the engine RPM that the max torque is available at.
Link to exact post in thread:
This is a 2024 Tacoma showing the differences of performance using 85 and 91 grade fuel. Normal drive mode. This is one of the biggest differences I've ever seen on a controlled dyno. This isn't about the Tacoma really at all, more about the way the engine handles basic and premium fuel. Interesting.
Picture of graph:
Link to exact post in thread:
You shouldn't use 86 or 85 grade gas, right?
It likely won’t hurt a modern low boost production engine either. It’ll pull timing and everything will be fine. I wouldn’t regularly run 85, but I...
www.tacomaworld.com
This is a 2024 Tacoma showing the differences of performance using 85 and 91 grade fuel. Normal drive mode. This is one of the biggest differences I've ever seen on a controlled dyno. This isn't about the Tacoma really at all, more about the way the engine handles basic and premium fuel. Interesting.
Picture of graph: