rewrite other people's articles will not, here all of sensible chewed on the example of VAZ engines. In our case C20NE motor and turbine TD05 by Evo 7 RS. The food is the Denso injectors on Subaru WRX at 440 cc / min. Planned boost in the area of 1.2 bar, for the calculation of these nozzles will butt. Before setting up the mixture in the engine must perform adequately fuel pump and fuel pressure regulator. In the first test the pressure in the fuel system on idling was about 1.6 bar, is very low, generally strange how the motor will operate normally. Closing the fuel return line pressure ramp should be increased, because it just grew up to 3 bar, greater pump could not.
Given the increased fuel demand, it is necessary to get a more productive pump. There are many options for a long time appreciating all the "pros" and "cons", focused on the Chinese Walbro GSS 342 A statement performance 255 l / h at a pressure of 3 bar (at the stock fuel pump - 120 l / h). Of course at a higher value performance will be less pressure, it should be considered, but for our purposes it should be sufficient. Installation of a new pump was not difficult, surprisingly it was less stock, but is easy enough to become the standard body.
had a little drop new pump to mesh became to the previous level. It is noted that at least 4 liters of petrol in the tank the pump may seize the air, with an empty tank is better not to go. Of course it was necessary to change the soldering wire and hose.
Since RTD was a variant of volgovskih motor, but since the price is comparable with the Chinese, and decided to take it. Moreover, the set includes a pressure gauge, hose connection 8 mm and very necessary adapters 1/8 NPT - AN6, which will be useful to me for other purposes
in order not to repeat the mistakes of others once in the assembly using Teflon tape (made in USA).
bracket on the controller is present, but tie him not turned out as I did not spit. Hanging until the hose, the more RTD is not heavier than the native.
All connected, gasoline filled, ready for the test. I turn the key, turn on fuel pump, hear once he vnapryag shakes. I looked at the pressure gauge - 6 bar! Wait until the pressure eased, twirled an adjusting nut, again turn on the ignition - 4 bar, the fuel pump is much quieter and smoother. Play more with the regulator, stood at 2.5-2.6 bar at idle naturally when connecting the vacuum tube. By opening the throttle valve, vacuum in the reservoir varies from -0.65 to 0.15 bar, the pressure in the rail, respectively rises to 3.0-3.1 bar.
adequate job on the twentieth achieved, the ultimate test will still be on the boost (while driving), since no load overpressure in the receiver almost created a maximum could inflate 0.2 -0.3 bar excess.
PS When pressure is measured in the ramp using two pressure gauges, one on the RTD, the second in front of the ramp (our production). Differences in measurements are 0.15 bar, more importance to the RTD. Whether this is due to the different locations, whether due to error, but in any case, let us hope that the truth is somewhere nearby.