15-05-2014, 12:07 PM
If the dynamic advance operates on the pressure differential, should the thicker fuel therefore not mean lower pressure and more advance ? - in an ideal world where supply is not an issue.
Is it therefore just that it's more a lack of fuel which is the problem causing the drop in advance?
I'm wondering if an inline pump on veg would help you get that timing back again.
But a fine line between that, the temperature of it and the pressure difference at the pump.
Certainly heating it makes a massive difference. I use a FPHE and a electrical supplement heater in the TDI.
If/when I get a 306, I have a few ideas I'm going to try out at any road.
Probs including mapping IPP against RPM and throttle on derv and veg.
Tom, would solenoid control over the pressure valve and thus your IPP give you any top end advantage ??
Say with the addition of forcing the fuel in with a lift pump and backing off pressure at low revs.
You could add IPP control into the electronics - forgive me if you're doing this already. - I guess why you wanted to try an electronic pump
Is it therefore just that it's more a lack of fuel which is the problem causing the drop in advance?
I'm wondering if an inline pump on veg would help you get that timing back again.
But a fine line between that, the temperature of it and the pressure difference at the pump.
Certainly heating it makes a massive difference. I use a FPHE and a electrical supplement heater in the TDI.
If/when I get a 306, I have a few ideas I'm going to try out at any road.
Probs including mapping IPP against RPM and throttle on derv and veg.
Tom, would solenoid control over the pressure valve and thus your IPP give you any top end advantage ??
Say with the addition of forcing the fuel in with a lift pump and backing off pressure at low revs.
You could add IPP control into the electronics - forgive me if you're doing this already. - I guess why you wanted to try an electronic pump