Prs4, And Prs2 Wiring Chart For The Rd Beta I
09-01-2006, 04:35 PM
#51
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All those relays arent needed. The power to the injectors and coils are actually coming from their own circuits. It's a good ground that is needed on the PRS to ground them out to fire them. That's how the stock system works. Either way will work, but it's a little more wiring.
09-01-2006, 05:47 PM
#52
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ya i know i dont need the injector and ignition one becasue it works without it. i should still have to wire in the fuel pump one correct? i dont think i can control the fueling if i dont do that? let me know if i dont have to. as it is right now i dont think my fuel pump will power up.
09-01-2006, 09:06 PM
#53
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I just let the stock ECU power that up too. I had the car idling fine several times. I just couldn't get it to be reliable. Hopefully my tuner can figure that part out.
09-01-2006, 11:35 PM
#54
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hmm well as it sits now with no relay running to it it is not getting power. im hoping once i hook that up well be good to go. ill post up when i figure something out
09-02-2006, 07:28 AM
#55
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The pump doesnt power up until you crank the car. You're not gonna hear it with the ignition on.
09-05-2006, 08:03 AM
#56
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I'm such an idiot!!! pat.gif
Remember how I was having trouble getting the car to start every time? Well, I wired the PRS ignition supply to the radio accesory fuse under the dash. That way, the PRS would power up when the key is switched to the on/start position. Now next time you're in your car, try to take notice of this. When you turn your key to on, the power comes up on your radio and interior accessories. But when you turn the key further and start cranking your car, the power to the radio goes out, then comes back on when you return to the "on" position. Therefore, the PRS wasn't getting power during cranking!!! But in freak luck, somehow got a little every now and then.
That's why I was having a hard time getting it to start reliably.
So anyways, I moved the wire to a constant power, and it starts up every time. The car runs/drives ok, but I still need to mess with the map.
I'm now having a problem getting the car to boost over 4psi. It cuts the injectors completely because the PRS shows that it has reached the top of the sensing capability. The scale for the AMP column is not right. I need to somehow get it to factor in the entire 3 bar range of the map sensor, instead of like 1.5 bar (4psi).
Remember how I was having trouble getting the car to start every time? Well, I wired the PRS ignition supply to the radio accesory fuse under the dash. That way, the PRS would power up when the key is switched to the on/start position. Now next time you're in your car, try to take notice of this. When you turn your key to on, the power comes up on your radio and interior accessories. But when you turn the key further and start cranking your car, the power to the radio goes out, then comes back on when you return to the "on" position. Therefore, the PRS wasn't getting power during cranking!!! But in freak luck, somehow got a little every now and then.
That's why I was having a hard time getting it to start reliably.
So anyways, I moved the wire to a constant power, and it starts up every time. The car runs/drives ok, but I still need to mess with the map.
I'm now having a problem getting the car to boost over 4psi. It cuts the injectors completely because the PRS shows that it has reached the top of the sensing capability. The scale for the AMP column is not right. I need to somehow get it to factor in the entire 3 bar range of the map sensor, instead of like 1.5 bar (4psi).
09-17-2006, 06:59 PM
#57
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I fixed my issues and boosted 17psi today on a stock motor. Ran on a rough tune @ 13.2:1 ratio. It hauled ass. cool.gif I gave it a little more fuel, but I'll find out how it drives tomorrow. It feels best when its around the 12:1 area.
09-17-2006, 07:04 PM
#58
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good to hear jon. im gunna need to know how you hooked this thing up because i cant get my car to run and i need to have it running very soon. im sick of messing with it. let me know
09-17-2006, 07:35 PM
#59
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I wired mine up in 10 minutes. You could do it too as long as you know the PIN #'s.
I'm gonna be pretty busy in the next few days, but I'll try and draw up a new diagram to replace the first one. Hopefully in the next 2 days.
But remember, I didn't hook up the ignition yet. The car ran fine for 10psi, but needed some timing pulled when I bumped it up to 17. tongue.gif I'll work on the ignition next month.
I'm gonna be pretty busy in the next few days, but I'll try and draw up a new diagram to replace the first one. Hopefully in the next 2 days.
But remember, I didn't hook up the ignition yet. The car ran fine for 10psi, but needed some timing pulled when I bumped it up to 17. tongue.gif I'll work on the ignition next month.