What's the ideal Air/Fuel Ratio?

[SolidSnake]

Just wondering guys, what is the "ideal" air/fuel ratio for a nice street/strip tune? I have read 11.4-11.7 is optimum, but I am by no means a tuner and it's all greek to me. I am just wondering guys with the cars that know their stuff, and tuners in general.....what would it be? I also acknowledge that not all cars are the same, but for arguments sake, what would it be?

Don

 

[Poisonous Mods]

Yes Donald its me







11.4 - 11.7 is very safe for the daily driving.
I dont see why 12.1 - 12.5 wouldnt be safe, either. :shrug: At the track u might want to up a bit higher on the 12's vs staying at the 11's.....but i dont think ur leaving much power out by not going lean.

I thought my CAI would of gotten me a bit leaner to make more power but havent seen any bad signs as of yet.

 

[SolidSnake]

Hmmmm.....I thought the higher the "safer"? Shows ya how much I know....the question goes on. I want to have optimum performance for the street, yet be able to take it to the track every now and then, and not have to mess with it.

 

[Poisonous Mods]

Yeah right, now ur just messing around.
Higher the leaner

My tuner said if i was just going to keep racing he would just keep me on the 13's but im not. But even with the a/f in the 11's i dont think ur leaving to many Ponies out of the chart....just my $.02 :shrug:

 

[SolidSnake]

So can the number be quantified? What would be a definitive number?

 

[Poisonous Mods]

Sorry couldnt find my other freaking sheet.

Id seen 445hp & 453tq on a 3.00" upper pulley....but i was way, way to lean Tuner had to stop the freaking run.

At the end of the day with him messing around with the A/F i didnt loss much Tq or Hp by going richer. Run 28 was in the 11's & Run 29 he left me tune in the high 11's & into the 12's.

Sorry no major proof or numbers.

 

[Poisonous Mods]

Hey Donald.
Sorry forgot to mention that my car is so freaking weird with new mods i put on. Every time i put some thing on tuner is having a field day with trying to get my A/F adjusted correctly.

Case in point from run 28 to run 29 even with a some what cool down & him just making the slightest adjustment made some major dif. in result....not sure if u have the same exp. with ur tuner?