Contour Enthusiasts Group Archives Forums Modifications Forced Induction s/c requirements

doesn't one of the model years have a returnless fuel system that's not compatible with the vortech kit ??
if so what year is it, and if it's 99 what's involved in making the fuel system compatible ?

Basically if you have returnless fuel on your car you are screwed unless you want to redo the fuel delivery system. The cutoof was somewhere in 99. The best way to check (that I know of) is to actually look and see if there are two fuel lines going to the fuel rail, if there is only one it is a returnless system. Generall speaking if your car was the first half of the 99's you should be pretty safe.

cool, thanks

Maybe, I'm way off here,
but the non-returnless systems vary the voltage to the fuel pump to get the deisred pressure, correct? hence no return line.

What would happen if you used a larger fuel pump, some resistors and capacitors,and a MAP sensor, along with a comparator circuit(simple circuit and chip) hooked to the MAP sensor as the Voltage input to allow it to switch the ouput to the fuel pump based on MAP pressure? Then you could plumb the power supply to the fuel pump "inline" with a series of Resistors, ie so at idle with no boost youd get a lower voltage to the pump, thus giving you the same Volume of fuel as the stock pump, but when you add boost, it would slowly(ok incrementally.., but if you added some capacitors it could ramp the discharge to smooth it out)decrease the resistance, increasing the voltage , thus increasing flow output, and thereby increasing the pressure to the injectors??
Anyone have any ideas on this? Brad, Chris, Terry???
If you give me the ideas i can probably draw ya'll up a circuit for this... I'm a logn way off from a supercharger(or turbo even) and might go nitrous instead.. but... jsut figured I'd offer my assistance.

That would all depend on the limits of the stock fuel pump. It may not be physically able to deliver enough fuel flow???

If it would be, then an easier way would be 24# injectors, custom chip, and an APEXi...

im a bit new to forced induction, but im looking at putting a vortech kit on my contour, still doing research though. i have a 2000 model, does it meet the requirements to put one on.

-are there any turbo kits for the duratec?

Actually, the easiest waydemon, would be a set of extra injectors, (like an SDS-EIC2 or an HKS or Greddy unit..)... I was just thinking that it would be easier to swap in a higher flow fuel pump(say off of a mustang or something like that.. you can find em anywhere for cheap) and then jsut control the voltage to it based on boost, to get you from the stock rating to the desired output.. thus no Apexi, or 24lb injectors, or remapped ecu... Just a simple comprator and a map sensor... (you could source the map sensor off of any turbo car like a dodge, because with the SC kits were running, wed never get above the limit of these....

Also, jsut had a stupid idea.. I'll pm it to you....

The RETURN system has a constant speed pump,pressure control by fuel reg,RETURNLESS system has the smart pump that has its speed controlled to vary the pressure.

Currently your car doesn't meet the requirements for the vortech since it is a 2000 and would have a returnless system in it.

Chris Hightower is working on a turbo kit that may work for this application, but the development has been stalled for the past couple months waiting for some supplier to get off their butts.

Rick

Extra injectors in our intake manifolds are not a good idea. All of the curves in the upper intake will cause fuel puddling, which means some cylinders will be lean and some will be rich. Same reason it's not wise to run a conventional "wet" N2O system on our cars. Larger injectors and an Apexi would be the easiest way to go... safely.