Gaskleppie wrote:I can explain.... In the early days of eCtune (about 4 years ago) we had a few cars with variating AF's because of variating fpr's. It was my idea to remove the hose to get a stable AF and it helped perfectly! You can get your AF way more stable with the hose disconnected. You remove 1 variable in the system which can change the AF. After tuning we DO NOT connect this hose and tell the owner that this hose is not necessary any more. The only downside is that if the injectors are a just big enough for the turbo setup, it can give problems getting enough fuel. Setting the base fuel pressure a bit higher will solve this.
MADMAX wrote:I always wanted to put an pressure sensor on the rail and let the ecu read the fuel pressure and make compensations to the injector pulse. Just a simple calculation in the code.
Sounds like a a feature request; along with finding a source for a hopefully linear sensor that would need to be on a special banjo bolt or something.... But tis a very solid concept there A little too close to OBD-II for my tastes though
That's Ford right stuff there. They use it for the fuel pump controller and corrections, cause well the controller doesn't exactly produce a constant fuel pressure.
