Air fuel Ration
Thread Starter
9 Second Club
iTrader: (34)
Joined: Mar 2005
Posts: 2,248
Likes: 0
From: SPRINGFIELD MISSOURI
Air fuel Ration with my set up and mods. What does the air fuel ration need to be. I have the HP TUNNER. some people have told be between 8 to 12 plus or -. With these mods what can I put my shift point at with 323 gears with the magic stice high rpm cam
thanks guys
thanks guys
Are you using a wideband? I assume no. 
For WOT shoot between 12.4-13.3 depending on what your car likes and at cruise/part throttle 14.63. If you are tuning with the stock narrowband o2's, shoot for +/- 2. To get the fueling correct you really need to invest in a wideband, the stock narrow bands won't allow you to correctly adjust the fueling at WOT.
For WOT shoot between 12.4-13.3 depending on what your car likes and at cruise/part throttle 14.63. If you are tuning with the stock narrowband o2's, shoot for +/- 2. To get the fueling correct you really need to invest in a wideband, the stock narrow bands won't allow you to correctly adjust the fueling at WOT. 
Thread Starter
9 Second Club
iTrader: (34)
Joined: Mar 2005
Posts: 2,248
Likes: 0
From: SPRINGFIELD MISSOURI
thats what I will try. took it to the track and as soon as it shift to 3rd It seem llike I lost half the power and it kinda cut out. no dont have a wide band yet.
Originally Posted by dnkynrbk
thats what I will try. took it to the track and as soon as it shift to 3rd It seem llike I lost half the power and it kinda cut out. no dont have a wide band yet.
Ignition misfires are a much more common problem, so most people would check for that first.
The next check would probably be injector duty cycle and fuel pressure while the problem is happening.
