mk3tattoos;1239405 said:
I'm having trouble picking the ne points. Do you start @1000rpm's and then stop @5500rpm's? And thanks for all the great help!!!
Depends on your injectors & turbo. For example, with many Lexus AFM/550 cars, I've found that a base fuel pressure ajustment can get you pretty perfect Vf readings without any AFC tweaking at all. That means you can concentrate your points up higher when they are critical.
For example:
If you have a car that you can get idle and cruise just about perfect with fuel pressure adjustments, you can then pack your ne-points into the upper range:
Example 1:
ne point|rpm
1|4000
2|4500
3|4750
4|5000
5|5250
6|5500
7|5750
8|6000
You try this and you find that actually you really are having problems in the 3500 to 4500 range. So you reset your ne points to:
ne point|rpm
1|3500
2|3750
3|4000
4|4250
5|4500
6|5000
7|5550
8|6000
But let's say you have all kinds of idle and cruise problems. Then you might do something like:
ne point|rpm
1|500
2|1000
3|1500
4|2000
5|3000
6|4000
7|5000
8|6000
These are just some examples of how you might set them up. There is no one "correct" way. It really depends on what you need to accomplish, your mods and how your car's Vf readings go.
The correct way to approach it is:
Get your car on a dyno.
Using wideband and Vf, get the car to idle and cruise on the chassis dyno properly by doing nothing but adjust fuel pressure. If you can get a good Vf there, then push your ne points up into the boost range and only use your AFC to tune full throttle.
If you can't accomplish that goal, you might want to consider a more robust fuel computer (like a MAP-ECU -
see this thread - start at post #7) or a MAFT (talk to DrJonez), or even a newer AFC that has more nepoints.
