AFR 10,5:1 way to rich?

[Chris_Sag]

Have an Airfuel ratio of 10,5:1 when i floor the pedal? Is that so rich that I am losing power, or is dangerous?? When cruising my AF is fine, around 15:1. My car was just this way when i bought it. Dont have anything to tune with.

 

[sexystover]

its not to bad, i run a 11:1 afr and im tuned, if anything its safer

 

[RED AWD GSX]

It's okay just as long as thats what your tuned for like I am and make sure that your egt's donw get too hot, but you should be fine.

 

[Chris_Sag]

Can the EGT get to hot when Im running Rich? I tought that was for lean conditions.

 

[BigBeans]

Can the EGT get to hot when Im running Rich?

No, and you're not really running rich.

Most of us tune for about 11.0 on pump gas, but there are a lot of turbo cars that run richer than 10.5 from the factory.

As for power, you're not leaving much on the table. You'll make a few more hp at 11.0, but not very much.

 

[Absit]

Have an Airfuel ratio of 10,5:1 when i floor the pedal? Is that so rich that I am losing power, or is dangerous?? When cruising my AF is fine, around 15:1. My car was just this way when i bought it. Dont have anything to tune with.

Sounds like the 100% factory tune. That's how Mitsu intended it.