I've asked some questions about these units before. But i decided to go over them one more time before hooking up the charge pipe. I know its a fairly simple unit. . It says unhook the vacuum line while setting your your pressure, the pressure that is set will be your maximum presure underboost, hook the vacuum line up and watch your fp fall back down to stock figures.
But here's where ive gotten confused. when the vacuum line is unhooked from the cartech is it suppose to be plugged so the fpr has vacum? or is it suppose to be unhooked so nothing has vacuum?
Emry
96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.
2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust
1996 s10- 97 ECU and wiring, soon to be boosted daily driver.
thanks. means i should be boosted tomarrow. just have to set the fuel pressure,put on the charge pipe and drive it up to the exhaust shop and it'll be done.
Emry
96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.
2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust
1996 s10- 97 ECU and wiring, soon to be boosted daily driver.
Quote:
It says unhook the vacuum line while setting your your pressure, the pressure that is set will be your maximum presure underboost
Dont set that pressure when the vaccuum line is unhook as your maximum boost fuel pressure becuase that is not waht it is (dont set it 90+ PSI or whatever). The only way to find out your maximum fuel pressure under max boost is actually driving the car while under maximum boost in real time and checking with a fuel guage.
Now, when it tells you to unhook your vacuum line from your cartech and set your fuel pressure with the on-center screw, Your setting the fuel pressure for atmosperic pressure, Basicly the transition from vacuum to boost fuel pressure (thats why you un-hook the vac line becuase the cartech will read level Atmo). It tells you in the manual that some ECM or OBD I ECU's N/A vehicles when turbo charged tend to lean out during this transition becuase the turbo is actually sppoling more air to make the engine reach 0 level befor it does N/A and can lean out (not too much of a prob with OBDII vehicles) SO what the cartech does is around -3 vacuum from 0 vacuum it will shoot your fuel pressure up to what ever you set the on center screw to....then once it starts read boost it will work like its supposed to. (PSI per PSI of boost)
Now if that confused you in some manor....what it reconmends you to do and what i did is set the pressure with the on-center screw with the vacuum line UNPLUGged (cartech reads 0 atmo) and set the pressure about 12-15 PSI of fuel higher then your idle pressure. SO your idleing at 32 PSI (like my car) of fuel, once its starts going from --3 vac to boost it starts at around 45 PSI of fuel pressure then rises per boost from there.
Hope this helps.
Im a moron or somthin, i put the fp test kit inbetween the the fpr and the cartech i read 25psi of fuel, i put the kit behind the cartech for the return and the lowest i can get it to read is 65psi. wtf is going on?!?! it irritating
Emry
96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.
2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust
1996 s10- 97 ECU and wiring, soon to be boosted daily driver.
I figured it out....stupid mistake
Emry
96 Camaro A4 383 12.5:1, E85, Full suspension, Nitrous outlet plate kit, hooker headers and catback, 3800 circle D converter.
2002 Silverado LQ4 6.0 CAI, Long tube headers, 4" exhaust
1996 s10- 97 ECU and wiring, soon to be boosted daily driver.
