my bad.. it was a tiring night for me; It should read as 14.6 instead of 16
Ideally, the A/F ratio should be around 13, while a higher number means that is running lean.

However, with your setup, I indeed think that everything is okay (maybe you might want to get a tune to squeeze everything out). Moreover, your flat torque flat should be a good sign !

G/L

 

I wonder why the tuner said that at 14.6 it was running rich? But what you are saying is that it is running lean? I am oh so very confused. Can you get me anymore insight on the matter. I am completely lost.

 

14 AF = 14 parts of air, 1 part of fuel. right? so it's running lean, as in, there is not enough fuel. running rich would mean that there is too much fuel, and your AF is like 12 or 11.

 

Ok. So now what do I do? Get a bigger fuel pump or bigger injectors?

 

bigger fuel pump would be a good place to start. the Stage 3 stillen i'm buying from Sukhi has Walbro 190 pump. i understand that the Stage 4 includes Walbro 255 pump.

 

What is making you go with the Stillen SC? Just curious. Everyone on the my350z is saying that I made a mistake goin with the Stillen.

 

because i don't need my ***** extended that much. because i don't want to have to buy a new engine. because i don't need a $20k toy - a $5k toy is enough. because i drive a sedan and don't need to pretend that i have a sports car - just a fairly quick car. and because i am getting a great deal on it. besides, i still want to get suspension, and double-din audio and navigation, and i'm tired of paying for mods.

 

Sorry for askin...

 

no, man, i gave you an honest answer.

i cannot afford a $20k FI system. if i went with any sort of turbo, that is what it would cost in the end - with a blown motor, that is. and i am fully convinced that driving with a turbo on stock engine will result in just that - a blown motor. so, add to that cost for new engine. so, yeah.

i would much rather have a much more driveable Stillen, with an absolutely linear torque curve.