20B GT35R FC3S - hIGGI - REcycling project

hIGGI · 04-05-2011, 12:52 PM

bigger update

Alternator and EWP mounted and tested about 30km on road, both in vacuum and under boost driving...We developed own controller, but after testing it out and finding it never slows down the pump on 20B because temp never drops under 80C, i ditched. Running pump at constant full speed now, it does not take long to get car warmed up and temperature never falls under 80C. Peak temp measured today = 92C

Oil temp peak = 80C
Fuel temp peak = 41C

Max boost set by wg spring 8,2 psi which it will make at 3000 RPM exactly.
My HKS GT wastegate is leaking, will have to remove it and inspect, even at idle i can clamp atmo vent by hand and feel its leaking...

Boost AFR's in 10.5 or so, fairly safe side, EGT at 800C max (probe after turbo, been running up to 900C on 13BT before)

Car seems to have some power, there are still things to take care of, but in general it feels good. And i find myself using brakes more and harder than before.

One problem i found and need to address is logging fuel pressure. In logs, i can see fuel pressure fluctate a lot, which might be caused by going out FPR (will try another one), by weak pump (1 bosch 044) or lastly by 1680's injectors pulsations when they open up under boost...my fuel pressure sensor is at the end of the fuel rail, barely more than 3 cm's from last secondary injector.....

By looking at log, now i can see i am hitting 97,9 duty cycle on injector, need to find out if haltech is showing that for INJ1 or secondary injectors....or some sort of combination...

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04-05-2011, 12:52 PM	#11
hIGGI Rotary Fan in Training Join Date: Mar 2008 Location: Czech Republic Posts: 78 Rep Power: 18	bigger update Alternator and EWP mounted and tested about 30km on road, both in vacuum and under boost driving...We developed own controller, but after testing it out and finding it never slows down the pump on 20B because temp never drops under 80C, i ditched. Running pump at constant full speed now, it does not take long to get car warmed up and temperature never falls under 80C. Peak temp measured today = 92C Oil temp peak = 80C Fuel temp peak = 41C Max boost set by wg spring 8,2 psi which it will make at 3000 RPM exactly. My HKS GT wastegate is leaking, will have to remove it and inspect, even at idle i can clamp atmo vent by hand and feel its leaking... Boost AFR's in 10.5 or so, fairly safe side, EGT at 800C max (probe after turbo, been running up to 900C on 13BT before) Car seems to have some power, there are still things to take care of, but in general it feels good. And i find myself using brakes more and harder than before. One problem i found and need to address is logging fuel pressure. In logs, i can see fuel pressure fluctate a lot, which might be caused by going out FPR (will try another one), by weak pump (1 bosch 044) or lastly by 1680's injectors pulsations when they open up under boost...my fuel pressure sensor is at the end of the fuel rail, barely more than 3 cm's from last secondary injector..... By looking at log, now i can see i am hitting 97,9 duty cycle on injector, need to find out if haltech is showing that for INJ1 or secondary injectors....or some sort of combination...