Direct Injection is the reason for the lean out... Read into direct injection tech to see. I thought the same thing as i am working on a turbo project for my Jeep. then I read up on the difference direct injection makes and I had the old light bulb pop on. There is actually a slight cooling of intake air because of mixing in cylinder, and the mix is better. Allows for a leaner ratio for efficency.

 

I'm having mine dyno tomorrow, it's bone stock so I want to dyno after each mod.
Will post my result tomorrow

 

So does that mean that my 13.1 is good?

 

If 14,7 is normal..then 13.1 is richer while anything above 14,7 would be considered lean......

 

Yeah sorry to put my info with actual numbers. I didn't mean the numbers were correct for the situation, just that the motors can run leaner to save fuel because of the DI.

 

Bart can we see the Dyno sheet?

 

forced induction is different, it should be richer at wot, at cruising speed it should be 14.7 which is perfectly stoich anything higher is lean

 

Guys didn't have a printer at the mobile Dyno so I will be picking this up for Bart this week or on the weekend.

 

Once again thanks for picking that up for me (when you do)

 

Had dyno today stock no Mods
Max power = 244.67
Max torque = 250.04
Should be about 286.26 at the flywheel, it's a little lein
Having a problem attaching Dyno sheets, will post to my gallery tonight or tomorrow.
Next Mod Stage 1 in a couple weeks then back to the Dyno
Let me know if this is good, bad or the norm for stock

Byron