Q16 AFR and Timing Guidelines

[TheBoz]

So there is not very much info on Q16, and since I am in the process of tuning my car I figured I would post what I am doing and what I have heard.

My Tune:
AFR: 12.5
Timing: 22-25degrees


Now I have heard that you should run q16 in the 13.5 afr range however, I dont really know. Now I can say that when my car went lean in the 13.5-14.0 range it felt much better, and the knock log looked better then it did at 12.0. I am also only running 16 degrees of timing currently.

So if anyone has any insight on Q16 I am looking for more info on the stuff.

 

[turboglenn]

Well, according to all the books i've read on turbo charging and engine tuning theory, peak torque is made at a richer mixture (around 12.5:1 on an N/A car) and turbo cars even on race gas with hgier boosts need to be righer than 13.5:1 for sure. Although it may not detonate, it wil still burn hot enough to put holes in pistons

 

[JayRolla]

I was about to say I have burned up a valve running lean and I was having minimum knock. I would never run leaner than a 12.5 afr like stated in any type of car. Most of the mustang guys tune to 12.5 afr even under boost.

 

[blazinglaser_90]

On lower boost like 20 and below i've tuned my e85 to 13.0 afr but anything above that I keep it in the 12.5 range with about 20 - 22 timing

My buddies conquest runs on Q16 and the tuner kept him in the mid to low 12's AFR wise with like 16 - 19 timing across the board, but given that was also with a 100 shot.